[dpdk-dev] fix checkpatch errors

Message ID 1451872319-30737-1-git-send-email-huawei.xie@intel.com (mailing list archive)
State Superseded, archived
Headers

Commit Message

Huawei Xie Jan. 4, 2016, 1:51 a.m. UTC
  Signed-off-by: Huawei Xie <huawei.xie@intel.com>
---
 app/test-pmd/cmdline.c                             | 12 ++--
 app/test-pmd/config.c                              |  2 +-
 app/test-pmd/flowgen.c                             |  2 +-
 app/test-pmd/mempool_anon.c                        | 12 ++--
 app/test-pmd/testpmd.h                             |  2 +-
 app/test-pmd/txonly.c                              |  2 +-
 app/test/test_mbuf.c                               | 12 ++--
 app/test/test_memcpy_perf.c                        |  4 +-
 app/test/test_mempool.c                            |  4 +-
 app/test/test_memzone.c                            | 24 +++----
 app/test/test_red.c                                | 42 ++++++------
 app/test/test_ring.c                               |  4 +-
 drivers/crypto/aesni_mb/rte_aesni_mb_pmd_ops.c     |  2 +-
 drivers/crypto/qat/qat_qp.c                        | 22 +++---
 drivers/net/bnx2x/bnx2x.c                          | 34 ++++-----
 drivers/net/bnx2x/bnx2x.h                          |  4 +-
 drivers/net/bnx2x/bnx2x_rxtx.c                     | 16 ++---
 drivers/net/bnx2x/debug.c                          |  6 +-
 drivers/net/bonding/rte_eth_bond_pmd.c             |  2 +-
 drivers/net/e1000/em_ethdev.c                      | 40 +++++------
 drivers/net/e1000/em_rxtx.c                        | 46 ++++++-------
 drivers/net/e1000/igb_ethdev.c                     | 18 ++---
 drivers/net/e1000/igb_rxtx.c                       | 30 ++++----
 drivers/net/fm10k/fm10k_ethdev.c                   | 40 +++++------
 drivers/net/i40e/i40e_ethdev.c                     |  2 +-
 drivers/net/i40e/i40e_ethdev.h                     |  2 +-
 drivers/net/i40e/i40e_ethdev_vf.c                  |  2 +-
 drivers/net/i40e/i40e_rxtx.c                       | 14 ++--
 drivers/net/ixgbe/ixgbe_82599_bypass.c             |  4 +-
 drivers/net/ixgbe/ixgbe_bypass.c                   |  2 +-
 drivers/net/ixgbe/ixgbe_ethdev.c                   | 34 ++++-----
 drivers/net/ixgbe/ixgbe_rxtx.c                     | 36 +++++-----
 drivers/net/mlx5/mlx5_utils.h                      |  2 +-
 drivers/net/mpipe/mpipe_tilegx.c                   |  4 +-
 drivers/net/nfp/nfp_net.c                          | 16 ++---
 drivers/net/virtio/virtio_ethdev.c                 |  6 +-
 examples/ip_pipeline/cpu_core_map.c                |  2 +-
 .../pipeline/pipeline_flow_actions_be.c            |  2 +-
 examples/ip_reassembly/main.c                      | 22 +++---
 examples/ipv4_multicast/main.c                     | 14 ++--
 examples/l3fwd/main.c                              |  4 +-
 examples/multi_process/symmetric_mp/main.c         |  2 +-
 examples/netmap_compat/bridge/bridge.c             |  8 +--
 examples/netmap_compat/lib/compat_netmap.c         | 80 +++++++++++-----------
 examples/qos_sched/args.c                          |  2 +-
 examples/quota_watermark/qw/main.h                 |  2 +-
 examples/vhost/main.c                              |  4 +-
 examples/vhost_xen/main.c                          |  2 +-
 examples/vhost_xen/vhost_monitor.c                 |  6 +-
 lib/librte_acl/acl_run_neon.h                      |  2 +-
 lib/librte_cryptodev/rte_cryptodev.c               | 22 +++---
 lib/librte_eal/common/eal_common_memzone.c         |  2 +-
 .../common/include/arch/ppc_64/rte_byteorder.h     |  2 +-
 lib/librte_eal/common/malloc_heap.c                |  2 +-
 lib/librte_eal/linuxapp/eal/eal_xen_memory.c       |  2 +-
 lib/librte_eal/linuxapp/kni/kni_vhost.c            |  2 +-
 lib/librte_ether/rte_ether.h                       | 10 +--
 lib/librte_hash/rte_cuckoo_hash.c                  | 18 ++---
 lib/librte_ip_frag/ip_frag_internal.c              |  4 +-
 lib/librte_lpm/rte_lpm.c                           |  2 +-
 lib/librte_mempool/rte_mempool.h                   |  2 +-
 lib/librte_ring/rte_ring.h                         |  6 +-
 lib/librte_sched/rte_bitmap.h                      |  6 +-
 lib/librte_sched/rte_red.h                         |  2 +-
 lib/librte_sched/rte_sched.c                       |  4 +-
 65 files changed, 372 insertions(+), 372 deletions(-)
  

Comments

Jianfeng Tan Jan. 5, 2016, 2:21 a.m. UTC | #1
> -----Original Message-----
> From: Xie, Huawei
> Sent: Monday, January 4, 2016 9:52 AM
> To: dev@dpdk.org
> Cc: Mcnamara, John; Tan, Jianfeng; Xie, Huawei
> Subject: [PATCH] fix checkpatch errors
> 
> Signed-off-by: Huawei Xie <huawei.xie@intel.com>
...
>  	mbuf_poolname_build(sock_id, pool_name, sizeof(pool_name));
> -	return (rte_mempool_lookup((const char *)pool_name));
> +	return rte_mempool_lookup((const char *)pool_name);

Hi Huawei,

Assume this patch is to solve below error (reported by checkpatch):
ERROR: return is not a function, parentheses are not required

So maybe above fix is not necessary? Involve more people to discuss.

And please include the error message in the commit message.

Thanks,
Jianfeng
  
Yuanhan Liu Jan. 5, 2016, 2:27 a.m. UTC | #2
On Tue, Jan 05, 2016 at 02:21:12AM +0000, Tan, Jianfeng wrote:
> 
> 
> > -----Original Message-----
> > From: Xie, Huawei
> > Sent: Monday, January 4, 2016 9:52 AM
> > To: dev@dpdk.org
> > Cc: Mcnamara, John; Tan, Jianfeng; Xie, Huawei
> > Subject: [PATCH] fix checkpatch errors
> > 
> > Signed-off-by: Huawei Xie <huawei.xie@intel.com>
> ...
> >  	mbuf_poolname_build(sock_id, pool_name, sizeof(pool_name));
> > -	return (rte_mempool_lookup((const char *)pool_name));
> > +	return rte_mempool_lookup((const char *)pool_name);
> 
> Hi Huawei,
> 
> Assume this patch is to solve below error (reported by checkpatch):
> ERROR: return is not a function, parentheses are not required
> 
> So maybe above fix is not necessary? Involve more people to discuss.

This fix is good to me.

> And please include the error message in the commit message.

+1

	--yliu
  
Huawei Xie Jan. 5, 2016, 2:43 a.m. UTC | #3
On 1/5/2016 10:21 AM, Tan, Jianfeng wrote:
>
>> -----Original Message-----
>> From: Xie, Huawei
>> Sent: Monday, January 4, 2016 9:52 AM
>> To: dev@dpdk.org
>> Cc: Mcnamara, John; Tan, Jianfeng; Xie, Huawei
>> Subject: [PATCH] fix checkpatch errors
>>
>> Signed-off-by: Huawei Xie <huawei.xie@intel.com>
> ...
>>  	mbuf_poolname_build(sock_id, pool_name, sizeof(pool_name));
>> -	return (rte_mempool_lookup((const char *)pool_name));
>> +	return rte_mempool_lookup((const char *)pool_name);
> Hi Huawei,
>
> Assume this patch is to solve below error (reported by checkpatch):
> ERROR: return is not a function, parentheses are not required
>
> So maybe above fix is not necessary? Involve more people to discuss.
Yes, Almost all of the 800 errors are check patch errors. The
parentheses for some logic expressions, like return val == 0, return
function, are also removed. At least in this patch, they are not needed.
>
> And please include the error message in the commit message.
>
> Thanks,
> Jianfeng
>
>
  
John McNamara Jan. 5, 2016, 10:21 a.m. UTC | #4
> -----Original Message-----
> From: Tan, Jianfeng
> Sent: Tuesday, January 5, 2016 2:21 AM
> To: Xie, Huawei; dev@dpdk.org
> Cc: Mcnamara, John; Stephen Hemminger; Yuanhan Liu
> Subject: RE: [PATCH] fix checkpatch errors
> 
> 
> 
> > -----Original Message-----
> > From: Xie, Huawei
> > Sent: Monday, January 4, 2016 9:52 AM
> > To: dev@dpdk.org
> > Cc: Mcnamara, John; Tan, Jianfeng; Xie, Huawei
> > Subject: [PATCH] fix checkpatch errors
> >
> > Signed-off-by: Huawei Xie <huawei.xie@intel.com>
> ...
> >  	mbuf_poolname_build(sock_id, pool_name, sizeof(pool_name));
> > -	return (rte_mempool_lookup((const char *)pool_name));
> > +	return rte_mempool_lookup((const char *)pool_name);
> 
> Hi Huawei,
> 
> Assume this patch is to solve below error (reported by checkpatch):
> ERROR: return is not a function, parentheses are not required
> 
> So maybe above fix is not necessary? Involve more people to discuss.
> 
> And please include the error message in the commit message.

Hi Huawei,

The fix looks good and there was a similar patch applied previously for lib (from Ferruh):

    6307b909b8e0 ("lib: remove extra parenthesis after return")

However, the commit message could be better. Maybe something like the above:
"remove extra parentheses".

John
--
  
Huawei Xie Jan. 5, 2016, 4:20 p.m. UTC | #5
On 1/5/2016 6:22 PM, Mcnamara, John wrote:
>> -----Original Message-----
>> From: Tan, Jianfeng
>> Sent: Tuesday, January 5, 2016 2:21 AM
>> To: Xie, Huawei; dev@dpdk.org
>> Cc: Mcnamara, John; Stephen Hemminger; Yuanhan Liu
>> Subject: RE: [PATCH] fix checkpatch errors
>>
>>
>>
>>> -----Original Message-----
>>> From: Xie, Huawei
>>> Sent: Monday, January 4, 2016 9:52 AM
>>> To: dev@dpdk.org
>>> Cc: Mcnamara, John; Tan, Jianfeng; Xie, Huawei
>>> Subject: [PATCH] fix checkpatch errors
>>>
>>> Signed-off-by: Huawei Xie <huawei.xie@intel.com>
>> ...
>>>  	mbuf_poolname_build(sock_id, pool_name, sizeof(pool_name));
>>> -	return (rte_mempool_lookup((const char *)pool_name));
>>> +	return rte_mempool_lookup((const char *)pool_name);
>> Hi Huawei,
>>
>> Assume this patch is to solve below error (reported by checkpatch):
>> ERROR: return is not a function, parentheses are not required
>>
>> So maybe above fix is not necessary? Involve more people to discuss.
>>
>> And please include the error message in the commit message.
> Hi Huawei,
>
> The fix looks good and there was a similar patch applied previously for lib (from Ferruh):
>
>     6307b909b8e0 ("lib: remove extra parenthesis after return")
Oh yes, but no idea why Ferruh Yigit missed so many. I have greped the
pattern, so this patch should fix almost all of them.
>
> However, the commit message could be better. Maybe something like the above:
> "remove extra parentheses".
OK. Weird that my commit message gets lost again. Will send a new one.
>
> John
  

Patch

diff --git a/app/test-pmd/cmdline.c b/app/test-pmd/cmdline.c
index 73298c9..a82682d 100644
--- a/app/test-pmd/cmdline.c
+++ b/app/test-pmd/cmdline.c
@@ -2418,11 +2418,11 @@  parse_item_list(char* str, const char* item_name, unsigned int max_items,
 		}
 		if (c != ',') {
 			printf("character %c is not a decimal digit\n", c);
-			return (0);
+			return 0;
 		}
 		if (! value_ok) {
 			printf("No valid value before comma\n");
-			return (0);
+			return 0;
 		}
 		if (nb_item < max_items) {
 			parsed_items[nb_item] = value;
@@ -2434,11 +2434,11 @@  parse_item_list(char* str, const char* item_name, unsigned int max_items,
 	if (nb_item >= max_items) {
 		printf("Number of %s = %u > %u (maximum items)\n",
 		       item_name, nb_item + 1, max_items);
-		return (0);
+		return 0;
 	}
 	parsed_items[nb_item++] = value;
 	if (! check_unique_values)
-		return (nb_item);
+		return nb_item;
 
 	/*
 	 * Then, check that all values in the list are differents.
@@ -2449,11 +2449,11 @@  parse_item_list(char* str, const char* item_name, unsigned int max_items,
 			if (parsed_items[j] == parsed_items[i]) {
 				printf("duplicated %s %u at index %u and %u\n",
 				       item_name, parsed_items[i], i, j);
-				return (0);
+				return 0;
 			}
 		}
 	}
-	return (nb_item);
+	return nb_item;
 }
 
 struct cmd_set_list_result {
diff --git a/app/test-pmd/config.c b/app/test-pmd/config.c
index 7088f6f..0062484 100644
--- a/app/test-pmd/config.c
+++ b/app/test-pmd/config.c
@@ -750,7 +750,7 @@  ring_dma_zone_lookup(const char *ring_name, uint8_t port_id, uint16_t q_id)
 		printf("%s ring memory zoneof (port %d, queue %d) not"
 		       "found (zone name = %s\n",
 		       ring_name, port_id, q_id, mz_name);
-	return (mz);
+	return mz;
 }
 
 union igb_ring_dword {
diff --git a/app/test-pmd/flowgen.c b/app/test-pmd/flowgen.c
index e3620f5..0f307e8 100644
--- a/app/test-pmd/flowgen.c
+++ b/app/test-pmd/flowgen.c
@@ -96,7 +96,7 @@  tx_mbuf_alloc(struct rte_mempool *mp)
 
 	m = __rte_mbuf_raw_alloc(mp);
 	__rte_mbuf_sanity_check_raw(m, 0);
-	return (m);
+	return m;
 }
 
 
diff --git a/app/test-pmd/mempool_anon.c b/app/test-pmd/mempool_anon.c
index 69bbef3..4730432 100644
--- a/app/test-pmd/mempool_anon.c
+++ b/app/test-pmd/mempool_anon.c
@@ -64,7 +64,7 @@  get_phys_map(void *va, phys_addr_t pa[], uint32_t pg_num, uint32_t pg_sz)
 	nb = pg_num * sizeof(*pa);
 
 	if ((fd = open(PAGEMAP_FNAME, O_RDONLY)) < 0)
-		return (ENOENT);
+		return ENOENT;
 
 	if ((rc = pread(fd, pa, nb, ofs)) < 0 || (rc -= nb) != 0) {
 
@@ -79,7 +79,7 @@  get_phys_map(void *va, phys_addr_t pa[], uint32_t pg_num, uint32_t pg_sz)
 	for (i = 0; i != pg_num; i++)
 		pa[i] = (pa[i] & PAGEMAP_PFN_MASK) * pg_sz;
 
-	return (rc);
+	return rc;
 }
 
 struct rte_mempool *
@@ -103,7 +103,7 @@  mempool_anon_create(const char *name, unsigned elt_num, unsigned elt_size,
 	pg_sz = getpagesize();
 	if (rte_is_power_of_2(pg_sz) == 0) {
 		rte_errno = EINVAL;
-		return (mp);
+		return mp;
 	}
 
 	pg_shift = rte_bsf32(pg_sz);
@@ -122,7 +122,7 @@  mempool_anon_create(const char *name, unsigned elt_num, unsigned elt_size,
 			"error code: %d\n",
 			__func__, name, sz, errno);
 		rte_errno = rc;
-		return (mp);
+		return mp;
 	}
 
 	/* extract physical mappings of the allocated memory. */
@@ -177,7 +177,7 @@  mempool_anon_create(const char *name, unsigned elt_num, unsigned elt_size,
 	}
 
 	free(pa);
-	return (mp);
+	return mp;
 }
 
 #else /* RTE_EXEC_ENV_LINUXAPP */
@@ -195,7 +195,7 @@  mempool_anon_create(__rte_unused const char *name,
 	__rte_unused int socket_id, __rte_unused unsigned flags)
 {
 	rte_errno = ENOTSUP;
-	return (NULL);
+	return NULL;
 }
 
 #endif /* RTE_EXEC_ENV_LINUXAPP */
diff --git a/app/test-pmd/testpmd.h b/app/test-pmd/testpmd.h
index ee7de98..bfac213 100644
--- a/app/test-pmd/testpmd.h
+++ b/app/test-pmd/testpmd.h
@@ -420,7 +420,7 @@  mbuf_pool_find(unsigned int sock_id)
 	char pool_name[RTE_MEMPOOL_NAMESIZE];
 
 	mbuf_poolname_build(sock_id, pool_name, sizeof(pool_name));
-	return (rte_mempool_lookup((const char *)pool_name));
+	return rte_mempool_lookup((const char *)pool_name);
 }
 
 /**
diff --git a/app/test-pmd/txonly.c b/app/test-pmd/txonly.c
index a903d4f..b37cae5 100644
--- a/app/test-pmd/txonly.c
+++ b/app/test-pmd/txonly.c
@@ -93,7 +93,7 @@  tx_mbuf_alloc(struct rte_mempool *mp)
 
 	m = __rte_mbuf_raw_alloc(mp);
 	__rte_mbuf_sanity_check_raw(m, 0);
-	return (m);
+	return m;
 }
 
 static void
diff --git a/app/test/test_mbuf.c b/app/test/test_mbuf.c
index b32bef6..cfa12e3 100644
--- a/app/test/test_mbuf.c
+++ b/app/test/test_mbuf.c
@@ -696,7 +696,7 @@  test_refcnt_slave(__attribute__((unused)) void *arg)
 	printf("%s finished at lcore %u, "
 	       "number of freed mbufs: %u\n",
 	       __func__, lcore, free);
-	return (0);
+	return 0;
 }
 
 static void
@@ -770,7 +770,7 @@  test_refcnt_master(void)
 	rte_wmb();
 
 	printf("%s finished at lcore %u\n", __func__, lcore);
-	return (0);
+	return 0;
 }
 
 #endif
@@ -786,7 +786,7 @@  test_refcnt_mbuf(void)
 	if ((lnum = rte_lcore_count()) == 1) {
 		printf("skipping %s, number of lcores: %u is not enough\n",
 		    __func__, lnum);
-		return (0);
+		return 0;
 	}
 
 	printf("starting %s, at %u lcores\n", __func__, lnum);
@@ -800,7 +800,7 @@  test_refcnt_mbuf(void)
 				SOCKET_ID_ANY)) == NULL) {
 		printf("%s: cannot allocate " MAKE_STRING(refcnt_pool) "\n",
 		    __func__);
-		return (-1);
+		return -1;
 	}
 
 	if (refcnt_mbuf_ring == NULL &&
@@ -809,7 +809,7 @@  test_refcnt_mbuf(void)
 			RING_F_SP_ENQ)) == NULL) {
 		printf("%s: cannot allocate " MAKE_STRING(refcnt_mbuf_ring)
 		    "\n", __func__);
-		return (-1);
+		return -1;
 	}
 
 	refcnt_stop_slaves = 0;
@@ -836,7 +836,7 @@  test_refcnt_mbuf(void)
 	rte_ring_dump(stdout, refcnt_mbuf_ring);
 
 #endif
-	return (0);
+	return 0;
 }
 
 #include <unistd.h>
diff --git a/app/test/test_memcpy_perf.c b/app/test/test_memcpy_perf.c
index 754828e..69bc947 100644
--- a/app/test/test_memcpy_perf.c
+++ b/app/test/test_memcpy_perf.c
@@ -146,8 +146,8 @@  free_buffers(void)
 static inline size_t
 get_rand_offset(size_t uoffset)
 {
-	return (((rte_rand() % (LARGE_BUFFER_SIZE - SMALL_BUFFER_SIZE)) &
-			~(ALIGNMENT_UNIT - 1)) + uoffset);
+	return ((rte_rand() % (LARGE_BUFFER_SIZE - SMALL_BUFFER_SIZE)) &
+			~(ALIGNMENT_UNIT - 1)) + uoffset;
 }
 
 /* Fill in source and destination addresses. */
diff --git a/app/test/test_mempool.c b/app/test/test_mempool.c
index 72f8fb6..f0f823b 100644
--- a/app/test/test_mempool.c
+++ b/app/test/test_mempool.c
@@ -448,10 +448,10 @@  test_mempool_xmem_misc(void)
 		printf("failure @ %s: rte_mempool_xmem_usage(%u, %u) "
 			"returns: %#zx, while expected: %#zx;\n",
 			__func__, elt_num, total_size, sz, (size_t)usz);
-		return (-1);
+		return -1;
 	}
 
-	return (0);
+	return 0;
 }
 
 static int
diff --git a/app/test/test_memzone.c b/app/test/test_memzone.c
index c37f950..cadd86f 100644
--- a/app/test/test_memzone.c
+++ b/app/test/test_memzone.c
@@ -609,36 +609,36 @@  check_memzone_bounded(const char *name, uint32_t len,  uint32_t align,
 			align, bound)) == NULL) {
 		printf("%s(%s): memzone creation failed\n",
 			__func__, name);
-		return (-1);
+		return -1;
 	}
 
 	if ((mz->phys_addr & ((phys_addr_t)align - 1)) != 0) {
 		printf("%s(%s): invalid phys addr alignment\n",
 			__func__, mz->name);
-		return (-1);
+		return -1;
 	}
 
 	if (((uintptr_t) mz->addr & ((uintptr_t)align - 1)) != 0) {
 		printf("%s(%s): invalid virtual addr alignment\n",
 			__func__, mz->name);
-		return (-1);
+		return -1;
 	}
 
 	if ((mz->len & RTE_CACHE_LINE_MASK) != 0 || mz->len < len ||
 			mz->len < RTE_CACHE_LINE_SIZE) {
 		printf("%s(%s): invalid length\n",
 			__func__, mz->name);
-		return (-1);
+		return -1;
 	}
 
 	if ((mz->phys_addr & bmask) !=
 			((mz->phys_addr + mz->len - 1) & bmask)) {
 		printf("%s(%s): invalid memzone boundary %u crossed\n",
 			__func__, mz->name, bound);
-		return (-1);
+		return -1;
 	}
 
-	return (0);
+	return 0;
 }
 
 static int
@@ -654,7 +654,7 @@  test_memzone_bounded(void)
 			100, SOCKET_ID_ANY, 0, 32, UINT32_MAX)) != NULL) {
 		printf("%s(%s)created a memzone with invalid boundary "
 			"conditions\n", __func__, memzone_err->name);
-		return (-1);
+		return -1;
 	}
 
 	/* should fail as len is greater then boundary */
@@ -663,20 +663,20 @@  test_memzone_bounded(void)
 			100, SOCKET_ID_ANY, 0, 32, 32)) != NULL) {
 		printf("%s(%s)created a memzone with invalid boundary "
 			"conditions\n", __func__, memzone_err->name);
-		return (-1);
+		return -1;
 	}
 
 	if ((rc = check_memzone_bounded("bounded_128", 100, 128, 128)) != 0)
-		return (rc);
+		return rc;
 
 	if ((rc = check_memzone_bounded("bounded_256", 100, 256, 128)) != 0)
-		return (rc);
+		return rc;
 
 	if ((rc = check_memzone_bounded("bounded_1K", 100, 64, 1024)) != 0)
-		return (rc);
+		return rc;
 
 	if ((rc = check_memzone_bounded("bounded_1K_MAX", 0, 64, 1024)) != 0)
-		return (rc);
+		return rc;
 
 	return 0;
 }
diff --git a/app/test/test_red.c b/app/test/test_red.c
index 37841b3..81c9d67 100644
--- a/app/test/test_red.c
+++ b/app/test/test_red.c
@@ -229,7 +229,7 @@  static double calc_drop_prob(uint32_t min_th, uint32_t max_th,
 	} else {
 		drop_prob = 1.0;
 	}
-	return (drop_prob);
+	return drop_prob;
 }
 
 /**
@@ -249,7 +249,7 @@  static int check_drop_rate(double *diff, double drop_rate, double drop_prob, dou
 	                ret = 0;
 	        }
         }
-	return (ret);
+	return ret;
 }
 
 /**
@@ -269,7 +269,7 @@  static int check_avg(double *diff, double avg, double exp_avg, double tolerance)
 	                ret = 0;
                 }
 	}
-	return (ret);
+	return ret;
 }
 
 /**
@@ -303,10 +303,10 @@  static uint64_t get_machclk_freq(void)
 		   USEC_PER_MSEC); /**< diff is in micro secs */
 
 	if (diff == 0)
-		return(0);
+		return 0;
 
 	clk_freq_hz = ((end - start) * USEC_PER_SEC / diff);
-	return (clk_freq_hz);
+	return clk_freq_hz;
 }
 
 /**
@@ -326,14 +326,14 @@  test_rte_red_init(struct test_config *tcfg)
 					(uint16_t)tcfg->tconfig->min_th,
 					(uint16_t)tcfg->tconfig->max_th,
 					(uint16_t)tcfg->tconfig->maxp_inv[i]) != 0) {
-			return(FAIL);
+			return FAIL;
 		}
 	}
 
 	*tcfg->tqueue->q = 0;
 	*tcfg->tvar->dropped = 0;
 	*tcfg->tvar->enqueued = 0;
-	return(PASS);
+	return PASS;
 }
 
 /**
@@ -364,11 +364,11 @@  increase_actual_qsize(struct rte_red_config *red_cfg,
         * check if target actual queue size has been reached
         */
         if (*q != level)
-                return (-1);
+                return -1;
         /**
          * success
          */
-        return (0);
+        return 0;
 }
 
 /**
@@ -395,11 +395,11 @@  increase_average_qsize(struct rte_red_config *red_cfg,
          */
         avg = rte_red_get_avg_int(red_cfg, red);
         if (avg != level)
-                return (-1);
+                return -1;
         /**
          * success
          */
-        return (0);
+        return 0;
 }
 
 /**
@@ -572,7 +572,7 @@  static enum test_result func_test1(struct test_config *tcfg)
 	               (double)tcfg->tqueue->drop_tolerance);
 	}
 out:
-	return (result);
+	return result;
 }
 
 /**
@@ -683,7 +683,7 @@  static enum test_result func_test2(struct test_config *tcfg)
 	               (double)tcfg->tqueue->drop_tolerance);
 	}
 out:
-	return (result);
+	return result;
 }
 
 /**
@@ -796,7 +796,7 @@  static enum test_result func_test3(struct test_config *tcfg)
 		       diff <= (double)tcfg->tqueue->avg_tolerance ? "pass" : "fail");
 	}
 out:
-	return (result);
+	return result;
 }
 
 /**
@@ -938,7 +938,7 @@  static enum test_result func_test4(struct test_config *tcfg)
 	       diff, (double)tcfg->tqueue->avg_tolerance,
 	       diff <= (double)tcfg->tqueue->avg_tolerance ? "pass" : "fail");
 out:
-	return (result);
+	return result;
 }
 
 /**
@@ -1078,7 +1078,7 @@  static enum test_result func_test5(struct test_config *tcfg)
 		       diff, (double)tcfg->tqueue->drop_tolerance);
 	}
 out:
-	return (result);
+	return result;
 }
 
 /**
@@ -1209,7 +1209,7 @@  static enum test_result func_test6(struct test_config *tcfg)
 		       diff <= tcfg->tqueue->avg_tolerance ? "pass" : "fail");
 	}
 out:
-	return (result);
+	return result;
 }
 
 /**
@@ -1380,7 +1380,7 @@  static enum test_result perf1_test(struct test_config *tcfg)
 
 	rdtsc_prof_print(&prof);
 out:
-	return (result);
+	return result;
 }
 
 /**
@@ -1567,7 +1567,7 @@  static enum test_result perf2_test(struct test_config *tcfg)
 
 	rdtsc_prof_print(&prof);
 out:
-	return (result);
+	return result;
 }
 
 /**
@@ -1731,7 +1731,7 @@  static enum test_result ovfl_test1(struct test_config *tcfg)
 	       *tcfg->tvar->enqueued, *tcfg->tvar->dropped,
 	       drop_prob * 100.0, drop_rate * 100.0);
 out:
-	return (result);
+	return result;
 }
 
 /**
@@ -1870,7 +1870,7 @@  test_red(void)
 		printf("[total: %u, pass: %u, fail: %u]\n", num_tests, num_pass, num_tests - num_pass);
 		ret = -1;
 	}
-	return (ret);
+	return ret;
 }
 
 static struct test_command red_cmd = {
diff --git a/app/test/test_ring.c b/app/test/test_ring.c
index e5614de..9f809d5 100644
--- a/app/test/test_ring.c
+++ b/app/test/test_ring.c
@@ -112,7 +112,7 @@  static struct rte_ring *r;
 		printf("error at %s:%d\tcondition " #exp " failed\n",	\
 		    __func__, __LINE__);				\
 		rte_ring_dump(stdout, r);				\
-		return (-1);						\
+		return -1;						\
 	}
 
 #define	TEST_RING_FULL_EMTPY_ITER	8
@@ -274,7 +274,7 @@  test_ring_basic_full_empty(void * const src[], void *dst[])
 		TEST_RING_VERIFY(0 == memcmp(src, dst, rsz));
 		rte_ring_dump(stdout, r);
 	}
-	return (0);
+	return 0;
 }
 
 static int
diff --git a/drivers/crypto/aesni_mb/rte_aesni_mb_pmd_ops.c b/drivers/crypto/aesni_mb/rte_aesni_mb_pmd_ops.c
index 96d22f6..e43b898 100644
--- a/drivers/crypto/aesni_mb/rte_aesni_mb_pmd_ops.c
+++ b/drivers/crypto/aesni_mb/rte_aesni_mb_pmd_ops.c
@@ -179,7 +179,7 @@  aesni_mb_pmd_qp_setup(struct rte_cryptodev *dev, uint16_t qp_id,
 	qp = rte_zmalloc_socket("AES-NI PMD Queue Pair", sizeof(*qp),
 					RTE_CACHE_LINE_SIZE, socket_id);
 	if (qp == NULL)
-		return (-ENOMEM);
+		return -ENOMEM;
 
 	qp->id = qp_id;
 	dev->data->queue_pairs[qp_id] = qp;
diff --git a/drivers/crypto/qat/qat_qp.c b/drivers/crypto/qat/qat_qp.c
index ec5852d..5de47e3 100644
--- a/drivers/crypto/qat/qat_qp.c
+++ b/drivers/crypto/qat/qat_qp.c
@@ -150,13 +150,13 @@  int qat_crypto_sym_qp_setup(struct rte_cryptodev *dev, uint16_t queue_pair_id,
 		(qp_conf->nb_descriptors < ADF_MIN_SYM_DESC)) {
 		PMD_DRV_LOG(ERR, "Can't create qp for %u descriptors",
 				qp_conf->nb_descriptors);
-		return (-EINVAL);
+		return -EINVAL;
 	}
 
 	if (dev->pci_dev->mem_resource[0].addr == NULL) {
 		PMD_DRV_LOG(ERR, "Could not find VF config space "
 				"(UIO driver attached?).");
-		return (-EINVAL);
+		return -EINVAL;
 	}
 
 	if (queue_pair_id >=
@@ -164,7 +164,7 @@  int qat_crypto_sym_qp_setup(struct rte_cryptodev *dev, uint16_t queue_pair_id,
 					ADF_NUM_BUNDLES_PER_DEV)) {
 		PMD_DRV_LOG(ERR, "qp_id %u invalid for this device",
 				queue_pair_id);
-		return (-EINVAL);
+		return -EINVAL;
 	}
 
 	/* Allocate the queue pair data structure. */
@@ -172,7 +172,7 @@  int qat_crypto_sym_qp_setup(struct rte_cryptodev *dev, uint16_t queue_pair_id,
 			sizeof(*qp), RTE_CACHE_LINE_SIZE);
 	if (qp == NULL) {
 		PMD_DRV_LOG(ERR, "Failed to alloc mem for qp struct");
-		return (-ENOMEM);
+		return -ENOMEM;
 	}
 	qp->mmap_bar_addr = dev->pci_dev->mem_resource[0].addr;
 	rte_atomic16_init(&qp->inflights16);
@@ -198,7 +198,7 @@  int qat_crypto_sym_qp_setup(struct rte_cryptodev *dev, uint16_t queue_pair_id,
 
 create_err:
 	rte_free(qp);
-	return (-EFAULT);
+	return -EFAULT;
 }
 
 int qat_crypto_sym_qp_release(struct rte_cryptodev *dev, uint16_t queue_pair_id)
@@ -293,7 +293,7 @@  qat_queue_create(struct rte_cryptodev *dev, struct qat_queue *queue,
 	PMD_INIT_FUNC_TRACE();
 	if (desc_size > ADF_MSG_SIZE_TO_BYTES(ADF_MAX_MSG_SIZE)) {
 		PMD_DRV_LOG(ERR, "Invalid descriptor size %d", desc_size);
-		return (-EINVAL);
+		return -EINVAL;
 	}
 
 	/*
@@ -306,7 +306,7 @@  qat_queue_create(struct rte_cryptodev *dev, struct qat_queue *queue,
 			socket_id);
 	if (qp_mz == NULL) {
 		PMD_DRV_LOG(ERR, "Failed to allocate ring memzone");
-		return (-ENOMEM);
+		return -ENOMEM;
 	}
 
 	queue->base_addr = (char *)qp_mz->addr;
@@ -322,7 +322,7 @@  qat_queue_create(struct rte_cryptodev *dev, struct qat_queue *queue,
 	if (adf_verify_queue_size(desc_size, nb_desc, &(queue->queue_size))
 			!= 0) {
 		PMD_DRV_LOG(ERR, "Invalid num inflights");
-		return (-EINVAL);
+		return -EINVAL;
 	}
 
 	queue->max_inflights = ADF_MAX_INFLIGHTS(queue->queue_size,
@@ -336,7 +336,7 @@  qat_queue_create(struct rte_cryptodev *dev, struct qat_queue *queue,
 
 	if (queue->max_inflights < 2) {
 		PMD_DRV_LOG(ERR, "Invalid num inflights");
-		return (-EINVAL);
+		return -EINVAL;
 	}
 	queue->head = 0;
 	queue->tail = 0;
@@ -361,7 +361,7 @@  static int qat_qp_check_queue_alignment(uint64_t phys_addr,
 {
 	PMD_INIT_FUNC_TRACE();
 	if (((queue_size_bytes - 1) & phys_addr) != 0)
-		return (-EINVAL);
+		return -EINVAL;
 	return 0;
 }
 
@@ -378,7 +378,7 @@  static int adf_verify_queue_size(uint32_t msg_size, uint32_t msg_num,
 			return 0;
 		}
 	PMD_DRV_LOG(ERR, "Invalid ring size %d", msg_size * msg_num);
-	return (-EINVAL);
+	return -EINVAL;
 }
 
 static void adf_queue_arb_enable(struct qat_queue *txq, void *base_addr)
diff --git a/drivers/net/bnx2x/bnx2x.c b/drivers/net/bnx2x/bnx2x.c
index 67af5da..5a38c32 100644
--- a/drivers/net/bnx2x/bnx2x.c
+++ b/drivers/net/bnx2x/bnx2x.c
@@ -292,13 +292,13 @@  void bnx2x_post_dmae(struct bnx2x_softc *sc, struct dmae_command *dmae, int idx)
 
 uint32_t bnx2x_dmae_opcode_add_comp(uint32_t opcode, uint8_t comp_type)
 {
-	return (opcode | ((comp_type << DMAE_COMMAND_C_DST_SHIFT) |
-			  DMAE_COMMAND_C_TYPE_ENABLE));
+	return opcode | ((comp_type << DMAE_COMMAND_C_DST_SHIFT) |
+			  DMAE_COMMAND_C_TYPE_ENABLE);
 }
 
 uint32_t bnx2x_dmae_opcode_clr_src_reset(uint32_t opcode)
 {
-	return (opcode & ~DMAE_COMMAND_SRC_RESET);
+	return opcode & ~DMAE_COMMAND_SRC_RESET;
 }
 
 uint32_t
@@ -1098,7 +1098,7 @@  static int bnx2x_tx_queue_has_work(const struct bnx2x_fastpath *fp)
 
 	mb();			/* status block fields can change */
 	hw_cons = le16toh(*fp->tx_cons_sb);
-	return (hw_cons != txq->tx_pkt_head);
+	return hw_cons != txq->tx_pkt_head;
 }
 
 static uint8_t bnx2x_has_tx_work(struct bnx2x_fastpath *fp)
@@ -1122,7 +1122,7 @@  static int bnx2x_has_rx_work(struct bnx2x_fastpath *fp)
 	if (unlikely((rx_cq_cons_sb & MAX_RCQ_ENTRIES(rxq)) ==
 		     MAX_RCQ_ENTRIES(rxq)))
 		rx_cq_cons_sb++;
-	return (rxq->rx_cq_head != rx_cq_cons_sb);
+	return rxq->rx_cq_head != rx_cq_cons_sb;
 }
 
 static void
@@ -1280,7 +1280,7 @@  next_cqe:
 	/* Update producers */
 	bnx2x_update_rx_prod(sc, fp, bd_prod_fw, sw_cq_prod);
 
-	return (sw_cq_cons != hw_cq_cons);
+	return sw_cq_cons != hw_cq_cons;
 }
 
 static uint16_t
@@ -2559,7 +2559,7 @@  static void bnx2x_clear_reset_global(struct bnx2x_softc *sc)
 /* checks the GLOBAL_RESET bit, should be run under rtnl lock */
 static uint8_t bnx2x_reset_is_global(struct bnx2x_softc *sc)
 {
-	return (REG_RD(sc, BNX2X_RECOVERY_GLOB_REG) & BNX2X_GLOBAL_RESET_BIT);
+	return REG_RD(sc, BNX2X_RECOVERY_GLOB_REG) & BNX2X_GLOBAL_RESET_BIT;
 }
 
 /* clear RESET_IN_PROGRESS bit for the engine, should be run under rtnl lock */
@@ -2618,7 +2618,7 @@  static uint8_t bnx2x_get_load_status(struct bnx2x_softc *sc, int engine)
 
 	val = ((val & mask) >> shift);
 
-	return (val != 0);
+	return val != 0;
 }
 
 /* set pf load mark */
@@ -4860,9 +4860,9 @@  bnx2x_init_sb(struct bnx2x_softc *sc, phys_addr_t busaddr, int vfid,
 static uint8_t bnx2x_fp_qzone_id(struct bnx2x_fastpath *fp)
 {
 	if (CHIP_IS_E1x(fp->sc)) {
-		return (fp->cl_id + SC_PORT(fp->sc) * ETH_MAX_RX_CLIENTS_E1H);
+		return fp->cl_id + SC_PORT(fp->sc) * ETH_MAX_RX_CLIENTS_E1H;
 	} else {
-		return (fp->cl_id);
+		return fp->cl_id;
 	}
 }
 
@@ -4872,9 +4872,9 @@  bnx2x_rx_ustorm_prods_offset(struct bnx2x_softc *sc, struct bnx2x_fastpath *fp)
 	uint32_t offset = BAR_USTRORM_INTMEM;
 
 	if (IS_VF(sc)) {
-		return (PXP_VF_ADDR_USDM_QUEUES_START +
+		return PXP_VF_ADDR_USDM_QUEUES_START +
 			(sc->acquire_resp.resc.hw_qid[fp->index] *
-			 sizeof(struct ustorm_queue_zone_data)));
+			 sizeof(struct ustorm_queue_zone_data));
 	} else if (!CHIP_IS_E1x(sc)) {
 		offset += USTORM_RX_PRODS_E2_OFFSET(fp->cl_qzone_id);
 	} else {
@@ -7587,8 +7587,8 @@  static uint32_t bnx2x_pcie_capability_read(struct bnx2x_softc *sc, int reg)
 
 static uint8_t bnx2x_is_pcie_pending(struct bnx2x_softc *sc)
 {
-	return (bnx2x_pcie_capability_read(sc, PCIR_EXPRESS_DEVICE_STA) &
-		PCIM_EXP_STA_TRANSACTION_PND);
+	return bnx2x_pcie_capability_read(sc, PCIR_EXPRESS_DEVICE_STA) &
+		PCIM_EXP_STA_TRANSACTION_PND;
 }
 
 /*
@@ -9922,7 +9922,7 @@  static uint32_t bnx2x_get_pretend_reg(struct bnx2x_softc *sc)
 {
 	uint32_t base = PXP2_REG_PGL_PRETEND_FUNC_F0;
 	uint32_t stride = (PXP2_REG_PGL_PRETEND_FUNC_F1 - base);
-	return (base + (SC_ABS_FUNC(sc)) * stride);
+	return base + (SC_ABS_FUNC(sc)) * stride;
 }
 
 /*
@@ -10777,11 +10777,11 @@  static uint32_t bnx2x_flr_clnup_poll_count(struct bnx2x_softc *sc)
 {
 	/* adjust polling timeout */
 	if (CHIP_REV_IS_EMUL(sc)) {
-		return (FLR_POLL_CNT * 2000);
+		return FLR_POLL_CNT * 2000;
 	}
 
 	if (CHIP_REV_IS_FPGA(sc)) {
-		return (FLR_POLL_CNT * 120);
+		return FLR_POLL_CNT * 120;
 	}
 
 	return FLR_POLL_CNT;
diff --git a/drivers/net/bnx2x/bnx2x.h b/drivers/net/bnx2x/bnx2x.h
index 2abab0c..1b5e26e 100644
--- a/drivers/net/bnx2x/bnx2x.h
+++ b/drivers/net/bnx2x/bnx2x.h
@@ -1839,7 +1839,7 @@  bnx2x_ack_int(struct bnx2x_softc *sc)
 static inline int
 func_by_vn(struct bnx2x_softc *sc, int vn)
 {
-    return (2 * vn + SC_PORT(sc));
+    return 2 * vn + SC_PORT(sc);
 }
 
 /*
@@ -1874,7 +1874,7 @@  bnx2x_stats_id(struct bnx2x_fastpath *fp)
 	return fp->cl_id;
     }
 
-    return (fp->cl_id + SC_PORT(sc) * FP_SB_MAX_E1x);
+    return fp->cl_id + SC_PORT(sc) * FP_SB_MAX_E1x;
 }
 
 int bnx2x_init(struct bnx2x_softc *sc);
diff --git a/drivers/net/bnx2x/bnx2x_rxtx.c b/drivers/net/bnx2x/bnx2x_rxtx.c
index 52152e2..752a5e8 100644
--- a/drivers/net/bnx2x/bnx2x_rxtx.c
+++ b/drivers/net/bnx2x/bnx2x_rxtx.c
@@ -89,7 +89,7 @@  bnx2x_dev_rx_queue_setup(struct rte_eth_dev *dev,
 				 RTE_CACHE_LINE_SIZE, socket_id);
 	if (NULL == rxq) {
 		PMD_INIT_LOG(ERR, "rte_zmalloc for rxq failed!");
-		return (-ENOMEM);
+		return -ENOMEM;
 	}
 	rxq->sc = sc;
 	rxq->mb_pool = mp;
@@ -121,7 +121,7 @@  bnx2x_dev_rx_queue_setup(struct rte_eth_dev *dev,
 	if (NULL == dma) {
 		PMD_RX_LOG(ERR, "ring_dma_zone_reserve for rx_ring failed!");
 		bnx2x_rx_queue_release(rxq);
-		return (-ENOMEM);
+		return -ENOMEM;
 	}
 	fp->rx_desc_mapping = rxq->rx_ring_phys_addr = (uint64_t)dma->phys_addr;
 	rxq->rx_ring = (uint64_t*)dma->addr;
@@ -142,7 +142,7 @@  bnx2x_dev_rx_queue_setup(struct rte_eth_dev *dev,
 	if (NULL == rxq->sw_ring) {
 		PMD_RX_LOG(ERR, "rte_zmalloc for sw_ring failed!");
 		bnx2x_rx_queue_release(rxq);
-		return (-ENOMEM);
+		return -ENOMEM;
 	}
 
 	/* Initialize software ring entries */
@@ -153,7 +153,7 @@  bnx2x_dev_rx_queue_setup(struct rte_eth_dev *dev,
 			PMD_RX_LOG(ERR, "RX mbuf alloc failed queue_id=%u, idx=%d",
 				   (unsigned)rxq->queue_id, idx);
 			bnx2x_rx_queue_release(rxq);
-			return (-ENOMEM);
+			return -ENOMEM;
 		}
 		rxq->sw_ring[idx] = mbuf;
 		rxq->rx_ring[idx] = mbuf->buf_physaddr;
@@ -169,7 +169,7 @@  bnx2x_dev_rx_queue_setup(struct rte_eth_dev *dev,
 	dma = ring_dma_zone_reserve(dev, "bnx2x_rcq", queue_idx, dma_size, socket_id);
 	if (NULL == dma) {
 		PMD_RX_LOG(ERR, "RCQ  alloc failed");
-		return (-ENOMEM);
+		return -ENOMEM;
 	}
 	fp->rx_comp_mapping = rxq->cq_ring_phys_addr = (uint64_t)dma->phys_addr;
 	rxq->cq_ring = (union eth_rx_cqe*)dma->addr;
@@ -278,7 +278,7 @@  bnx2x_dev_tx_queue_setup(struct rte_eth_dev *dev,
 	txq = rte_zmalloc("ethdev TX queue", sizeof(struct bnx2x_tx_queue),
 			  RTE_CACHE_LINE_SIZE);
 	if (txq == NULL)
-		return (-ENOMEM);
+		return -ENOMEM;
 	txq->sc = sc;
 
 	txq->nb_tx_pages = 1;
@@ -302,7 +302,7 @@  bnx2x_dev_tx_queue_setup(struct rte_eth_dev *dev,
 	tz = ring_dma_zone_reserve(dev, "tx_hw_ring", queue_idx, tsize, socket_id);
 	if (tz == NULL) {
 		bnx2x_tx_queue_release(txq);
-		return (-ENOMEM);
+		return -ENOMEM;
 	}
 	fp->tx_desc_mapping = txq->tx_ring_phys_addr = (uint64_t)tz->phys_addr;
 	txq->tx_ring = (union eth_tx_bd_types *) tz->addr;
@@ -314,7 +314,7 @@  bnx2x_dev_tx_queue_setup(struct rte_eth_dev *dev,
 				   RTE_CACHE_LINE_SIZE);
 	if (txq->sw_ring == NULL) {
 		bnx2x_tx_queue_release(txq);
-		return (-ENOMEM);
+		return -ENOMEM;
 	}
 
 	/* PMD_DRV_LOG(DEBUG, "sw_ring=%p hw_ring=%p dma_addr=0x%"PRIx64,
diff --git a/drivers/net/bnx2x/debug.c b/drivers/net/bnx2x/debug.c
index f84925b..cc50845 100644
--- a/drivers/net/bnx2x/debug.c
+++ b/drivers/net/bnx2x/debug.c
@@ -59,7 +59,7 @@  bnx2x_reg_read8(struct bnx2x_softc *sc, size_t offset)
 	val = (uint8_t)(*((volatile uint8_t*)((uintptr_t)sc->bar[BAR0].base_addr + offset)));
 	PMD_DEBUG_PERIODIC_LOG(DEBUG, "offset=0x%08lx val=0x%02x", (unsigned long)offset, val);
 
-	return (val);
+	return val;
 }
 
 uint16_t
@@ -75,7 +75,7 @@  bnx2x_reg_read16(struct bnx2x_softc *sc, size_t offset)
 	val = (uint16_t)(*((volatile uint16_t*)((uintptr_t)sc->bar[BAR0].base_addr + offset)));
 	PMD_DEBUG_PERIODIC_LOG(DEBUG, "offset=0x%08lx val=0x%08x", (unsigned long)offset, val);
 
-	return (val);
+	return val;
 }
 
 uint32_t
@@ -92,5 +92,5 @@  bnx2x_reg_read32(struct bnx2x_softc *sc, size_t offset)
 	val = (uint32_t)(*((volatile uint32_t*)((uintptr_t)sc->bar[BAR0].base_addr + offset)));
 	PMD_DEBUG_PERIODIC_LOG(DEBUG, "offset=0x%08lx val=0x%08x", (unsigned long)offset, val);
 
-	return (val);
+	return val;
 }
diff --git a/drivers/net/bonding/rte_eth_bond_pmd.c b/drivers/net/bonding/rte_eth_bond_pmd.c
index b1373c6..b63c886 100644
--- a/drivers/net/bonding/rte_eth_bond_pmd.c
+++ b/drivers/net/bonding/rte_eth_bond_pmd.c
@@ -480,7 +480,7 @@  ether_hash(struct ether_hdr *eth_hdr)
 static inline uint32_t
 ipv4_hash(struct ipv4_hdr *ipv4_hdr)
 {
-	return (ipv4_hdr->src_addr ^ ipv4_hdr->dst_addr);
+	return ipv4_hdr->src_addr ^ ipv4_hdr->dst_addr;
 }
 
 static inline uint32_t
diff --git a/drivers/net/e1000/em_ethdev.c b/drivers/net/e1000/em_ethdev.c
index 66e8993..4a843fe 100644
--- a/drivers/net/e1000/em_ethdev.c
+++ b/drivers/net/e1000/em_ethdev.c
@@ -272,7 +272,7 @@  eth_em_dev_init(struct rte_eth_dev *eth_dev)
 			"failed to init HW",
 			eth_dev->data->port_id, pci_dev->id.vendor_id,
 			pci_dev->id.device_id);
-		return -(ENODEV);
+		return -ENODEV;
 	}
 
 	/* Allocate memory for storing MAC addresses */
@@ -282,7 +282,7 @@  eth_em_dev_init(struct rte_eth_dev *eth_dev)
 		PMD_INIT_LOG(ERR, "Failed to allocate %d bytes needed to "
 			"store MAC addresses",
 			ETHER_ADDR_LEN * hw->mac.rar_entry_count);
-		return -(ENOMEM);
+		return -ENOMEM;
 	}
 
 	/* Copy the permanent MAC address */
@@ -299,7 +299,7 @@  eth_em_dev_init(struct rte_eth_dev *eth_dev)
 	rte_intr_callback_register(&(pci_dev->intr_handle),
 		eth_em_interrupt_handler, (void *)eth_dev);
 
-	return (0);
+	return 0;
 }
 
 static int
@@ -431,11 +431,11 @@  em_hw_init(struct e1000_hw *hw)
 		PMD_INIT_LOG(ERR, "PHY reset is blocked due to "
 			"SOL/IDER session");
 	}
-	return (0);
+	return 0;
 
 error:
 	em_hw_control_release(hw);
-	return (diag);
+	return diag;
 }
 
 static int
@@ -448,7 +448,7 @@  eth_em_configure(struct rte_eth_dev *dev)
 	intr->flags |= E1000_FLAG_NEED_LINK_UPDATE;
 	PMD_INIT_FUNC_TRACE();
 
-	return (0);
+	return 0;
 }
 
 static void
@@ -536,7 +536,7 @@  eth_em_start(struct rte_eth_dev *dev)
 	/* Initialize the hardware */
 	if (em_hardware_init(hw)) {
 		PMD_INIT_LOG(ERR, "Unable to initialize the hardware");
-		return (-EIO);
+		return -EIO;
 	}
 
 	E1000_WRITE_REG(hw, E1000_VET, ETHER_TYPE_VLAN);
@@ -662,14 +662,14 @@  eth_em_start(struct rte_eth_dev *dev)
 
 	PMD_INIT_LOG(DEBUG, "<<");
 
-	return (0);
+	return 0;
 
 error_invalid_config:
 	PMD_INIT_LOG(ERR, "Invalid link_speed/link_duplex (%u/%u) for port %u",
 		     dev->data->dev_conf.link_speed,
 		     dev->data->dev_conf.link_duplex, dev->data->port_id);
 	em_dev_clear_queues(dev);
-	return (-EINVAL);
+	return -EINVAL;
 }
 
 /*********************************************************************
@@ -802,9 +802,9 @@  em_hardware_init(struct e1000_hw *hw)
 
 	diag = e1000_init_hw(hw);
 	if (diag < 0)
-		return (diag);
+		return diag;
 	e1000_check_for_link(hw);
-	return (0);
+	return 0;
 }
 
 /* This function is based on em_update_stats_counters() in e1000/if_em.c */
@@ -972,14 +972,14 @@  em_get_max_pktlen(const struct e1000_hw *hw)
 	case e1000_82574:
 	case e1000_80003es2lan: /* 9K Jumbo Frame size */
 	case e1000_82583:
-		return (0x2412);
+		return 0x2412;
 	case e1000_pchlan:
-		return (0x1000);
+		return 0x1000;
 	/* Adapters that do not support jumbo frames */
 	case e1000_ich8lan:
-		return (ETHER_MAX_LEN);
+		return ETHER_MAX_LEN;
 	default:
-		return (MAX_JUMBO_FRAME_SIZE);
+		return MAX_JUMBO_FRAME_SIZE;
 	}
 }
 
@@ -1360,7 +1360,7 @@  eth_em_interrupt_setup(struct rte_eth_dev *dev)
 	E1000_READ_REG(hw, E1000_ICR);
 	regval = E1000_READ_REG(hw, E1000_IMS);
 	E1000_WRITE_REG(hw, E1000_IMS, regval | E1000_ICR_LSC);
-	return (0);
+	return 0;
 }
 
 /*
@@ -1552,7 +1552,7 @@  eth_em_led_on(struct rte_eth_dev *dev)
 	struct e1000_hw *hw;
 
 	hw = E1000_DEV_PRIVATE_TO_HW(dev->data->dev_private);
-	return (e1000_led_on(hw) == E1000_SUCCESS ? 0 : -ENOTSUP);
+	return e1000_led_on(hw) == E1000_SUCCESS ? 0 : -ENOTSUP;
 }
 
 static int
@@ -1561,7 +1561,7 @@  eth_em_led_off(struct rte_eth_dev *dev)
 	struct e1000_hw *hw;
 
 	hw = E1000_DEV_PRIVATE_TO_HW(dev->data->dev_private);
-	return (e1000_led_off(hw) == E1000_SUCCESS ? 0 : -ENOTSUP);
+	return e1000_led_off(hw) == E1000_SUCCESS ? 0 : -ENOTSUP;
 }
 
 static int
@@ -1633,7 +1633,7 @@  eth_em_flow_ctrl_set(struct rte_eth_dev *dev, struct rte_eth_fc_conf *fc_conf)
 	    (fc_conf->high_water < fc_conf->low_water)) {
 		PMD_INIT_LOG(ERR, "e1000 incorrect high/low water value");
 		PMD_INIT_LOG(ERR, "high water must <= 0x%x", max_high_water);
-		return (-EINVAL);
+		return -EINVAL;
 	}
 
 	hw->fc.requested_mode = rte_fcmode_2_e1000_fcmode[fc_conf->mode];
@@ -1663,7 +1663,7 @@  eth_em_flow_ctrl_set(struct rte_eth_dev *dev, struct rte_eth_fc_conf *fc_conf)
 	}
 
 	PMD_INIT_LOG(ERR, "e1000_setup_link_generic = 0x%x", err);
-	return (-EIO);
+	return -EIO;
 }
 
 static void
diff --git a/drivers/net/e1000/em_rxtx.c b/drivers/net/e1000/em_rxtx.c
index d8fb252..7ef965c 100644
--- a/drivers/net/e1000/em_rxtx.c
+++ b/drivers/net/e1000/em_rxtx.c
@@ -85,7 +85,7 @@  rte_rxmbuf_alloc(struct rte_mempool *mp)
 
 	m = __rte_mbuf_raw_alloc(mp);
 	__rte_mbuf_sanity_check_raw(m, 0);
-	return (m);
+	return m;
 }
 
 #define RTE_MBUF_DATA_DMA_ADDR(mb)             \
@@ -312,10 +312,10 @@  what_ctx_update(struct em_tx_queue *txq, uint64_t flags,
 	if (likely (txq->ctx_cache.flags == flags &&
 			((txq->ctx_cache.hdrlen.data ^ hdrlen.data) &
 			txq->ctx_cache.cmp_mask) == 0))
-		return (EM_CTX_0);
+		return EM_CTX_0;
 
 	/* Mismatch */
-	return (EM_CTX_NUM);
+	return EM_CTX_NUM;
 }
 
 /* Reset transmit descriptors after they have been used */
@@ -373,7 +373,7 @@  em_xmit_cleanup(struct em_tx_queue *txq)
 	txq->nb_tx_free = (uint16_t)(txq->nb_tx_free + nb_tx_to_clean);
 
 	/* No Error */
-	return (0);
+	return 0;
 }
 
 static inline uint32_t
@@ -385,7 +385,7 @@  tx_desc_cksum_flags_to_upper(uint64_t ol_flags)
 
 	tmp = l4_olinfo[(ol_flags & PKT_TX_L4_MASK) != PKT_TX_L4_NO_CKSUM];
 	tmp |= l3_olinfo[(ol_flags & PKT_TX_IP_CKSUM) != 0];
-	return (tmp);
+	return tmp;
 }
 
 uint16_t
@@ -493,7 +493,7 @@  eth_em_xmit_pkts(void *tx_queue, struct rte_mbuf **tx_pkts,
 			if (em_xmit_cleanup(txq) != 0) {
 				/* Could not clean any descriptors */
 				if (nb_tx == 0)
-					return (0);
+					return 0;
 				goto end_of_tx;
 			}
 		}
@@ -630,7 +630,7 @@  end_of_tx:
 	E1000_PCI_REG_WRITE(txq->tdt_reg_addr, tx_id);
 	txq->tx_tail = tx_id;
 
-	return (nb_tx);
+	return nb_tx;
 }
 
 /*********************************************************************
@@ -659,7 +659,7 @@  rx_desc_error_to_pkt_flags(uint32_t rx_error)
 		pkt_flags |= PKT_RX_IP_CKSUM_BAD;
 	if (rx_error & E1000_RXD_ERR_TCPE)
 		pkt_flags |= PKT_RX_L4_CKSUM_BAD;
-	return (pkt_flags);
+	return pkt_flags;
 }
 
 uint16_t
@@ -833,7 +833,7 @@  eth_em_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts,
 		nb_hold = 0;
 	}
 	rxq->nb_rx_hold = nb_hold;
-	return (nb_rx);
+	return nb_rx;
 }
 
 uint16_t
@@ -1078,7 +1078,7 @@  eth_em_recv_scattered_pkts(void *rx_queue, struct rte_mbuf **rx_pkts,
 		nb_hold = 0;
 	}
 	rxq->nb_rx_hold = nb_hold;
-	return (nb_rx);
+	return nb_rx;
 }
 
 #define	EM_MAX_BUF_SIZE     16384
@@ -1234,19 +1234,19 @@  eth_em_tx_queue_setup(struct rte_eth_dev *dev,
 	tz = rte_eth_dma_zone_reserve(dev, "tx_ring", queue_idx, tsize,
 				      RTE_CACHE_LINE_SIZE, socket_id);
 	if (tz == NULL)
-		return (-ENOMEM);
+		return -ENOMEM;
 
 	/* Allocate the tx queue data structure. */
 	if ((txq = rte_zmalloc("ethdev TX queue", sizeof(*txq),
 			RTE_CACHE_LINE_SIZE)) == NULL)
-		return (-ENOMEM);
+		return -ENOMEM;
 
 	/* Allocate software ring */
 	if ((txq->sw_ring = rte_zmalloc("txq->sw_ring",
 			sizeof(txq->sw_ring[0]) * nb_desc,
 			RTE_CACHE_LINE_SIZE)) == NULL) {
 		em_tx_queue_release(txq);
-		return (-ENOMEM);
+		return -ENOMEM;
 	}
 
 	txq->nb_tx_desc = nb_desc;
@@ -1268,7 +1268,7 @@  eth_em_tx_queue_setup(struct rte_eth_dev *dev,
 	em_reset_tx_queue(txq);
 
 	dev->data->tx_queues[queue_idx] = txq;
-	return (0);
+	return 0;
 }
 
 static void
@@ -1335,7 +1335,7 @@  eth_em_rx_queue_setup(struct rte_eth_dev *dev,
 	if (nb_desc % EM_RXD_ALIGN != 0 ||
 			(nb_desc > E1000_MAX_RING_DESC) ||
 			(nb_desc < E1000_MIN_RING_DESC)) {
-		return (-EINVAL);
+		return -EINVAL;
 	}
 
 	/*
@@ -1344,7 +1344,7 @@  eth_em_rx_queue_setup(struct rte_eth_dev *dev,
 	if (rx_conf->rx_drop_en) {
 		PMD_INIT_LOG(ERR, "drop_en functionality not supported by "
 			     "device");
-		return (-EINVAL);
+		return -EINVAL;
 	}
 
 	/* Free memory prior to re-allocation if needed. */
@@ -1358,19 +1358,19 @@  eth_em_rx_queue_setup(struct rte_eth_dev *dev,
 	rz = rte_eth_dma_zone_reserve(dev, "rx_ring", queue_idx, rsize,
 				      RTE_CACHE_LINE_SIZE, socket_id);
 	if (rz == NULL)
-		return (-ENOMEM);
+		return -ENOMEM;
 
 	/* Allocate the RX queue data structure. */
 	if ((rxq = rte_zmalloc("ethdev RX queue", sizeof(*rxq),
 			RTE_CACHE_LINE_SIZE)) == NULL)
-		return (-ENOMEM);
+		return -ENOMEM;
 
 	/* Allocate software ring. */
 	if ((rxq->sw_ring = rte_zmalloc("rxq->sw_ring",
 			sizeof (rxq->sw_ring[0]) * nb_desc,
 			RTE_CACHE_LINE_SIZE)) == NULL) {
 		em_rx_queue_release(rxq);
-		return (-ENOMEM);
+		return -ENOMEM;
 	}
 
 	rxq->mb_pool = mp;
@@ -1395,7 +1395,7 @@  eth_em_rx_queue_setup(struct rte_eth_dev *dev,
 	dev->data->rx_queues[queue_idx] = rxq;
 	em_reset_rx_queue(rxq);
 
-	return (0);
+	return 0;
 }
 
 uint32_t
@@ -1546,12 +1546,12 @@  em_rctl_bsize(__rte_unused enum e1000_mac_type hwtyp, uint32_t *bufsz)
 			i++) {
 		if (rctl_bsize >= bufsz_to_rctl[i].bufsz) {
 			*bufsz = bufsz_to_rctl[i].bufsz;
-			return (bufsz_to_rctl[i].rctl);
+			return bufsz_to_rctl[i].rctl;
 		}
 	}
 
 	/* Should never happen. */
-	return (-EINVAL);
+	return -EINVAL;
 }
 
 static int
@@ -1572,7 +1572,7 @@  em_alloc_rx_queue_mbufs(struct em_rx_queue *rxq)
 		if (mbuf == NULL) {
 			PMD_INIT_LOG(ERR, "RX mbuf alloc failed "
 				     "queue_id=%hu", rxq->queue_id);
-			return (-ENOMEM);
+			return -ENOMEM;
 		}
 
 		dma_addr = rte_cpu_to_le_64(RTE_MBUF_DATA_DMA_ADDR_DEFAULT(mbuf));
diff --git a/drivers/net/e1000/igb_ethdev.c b/drivers/net/e1000/igb_ethdev.c
index d1bbcda..46554ff 100644
--- a/drivers/net/e1000/igb_ethdev.c
+++ b/drivers/net/e1000/igb_ethdev.c
@@ -791,7 +791,7 @@  eth_igb_dev_init(struct rte_eth_dev *eth_dev)
 err_late:
 	igb_hw_control_release(hw);
 
-	return (error);
+	return error;
 }
 
 static int
@@ -1010,7 +1010,7 @@  rte_igbvf_pmd_init(const char *name __rte_unused, const char *params __rte_unuse
 	PMD_INIT_FUNC_TRACE();
 
 	rte_eth_driver_register(&rte_igbvf_pmd);
-	return (0);
+	return 0;
 }
 
 static int
@@ -1146,7 +1146,7 @@  eth_igb_start(struct rte_eth_dev *dev)
 	/* Initialize the hardware */
 	if (igb_hardware_init(hw)) {
 		PMD_INIT_LOG(ERR, "Unable to initialize the hardware");
-		return (-EIO);
+		return -EIO;
 	}
 	adapter->stopped = 0;
 
@@ -1289,14 +1289,14 @@  eth_igb_start(struct rte_eth_dev *dev)
 
 	PMD_INIT_LOG(DEBUG, "<<");
 
-	return (0);
+	return 0;
 
 error_invalid_config:
 	PMD_INIT_LOG(ERR, "Invalid link_speed/link_duplex (%u/%u) for port %u",
 		     dev->data->dev_conf.link_speed,
 		     dev->data->dev_conf.link_duplex, dev->data->port_id);
 	igb_dev_clear_queues(dev);
-	return (-EINVAL);
+	return -EINVAL;
 }
 
 /*********************************************************************
@@ -1489,13 +1489,13 @@  igb_hardware_init(struct e1000_hw *hw)
 
 	diag = e1000_init_hw(hw);
 	if (diag < 0)
-		return (diag);
+		return diag;
 
 	E1000_WRITE_REG(hw, E1000_VET, ETHER_TYPE_VLAN << 16 | ETHER_TYPE_VLAN);
 	e1000_get_phy_info(hw);
 	e1000_check_for_link(hw);
 
-	return (0);
+	return 0;
 }
 
 /* This function is based on igb_update_stats_counters() in igb/if_igb.c */
@@ -2591,7 +2591,7 @@  eth_igb_flow_ctrl_set(struct rte_eth_dev *dev, struct rte_eth_fc_conf *fc_conf)
 	    (fc_conf->high_water < fc_conf->low_water)) {
 		PMD_INIT_LOG(ERR, "e1000 incorrect high/low water value");
 		PMD_INIT_LOG(ERR, "high water must <=  0x%x", max_high_water);
-		return (-EINVAL);
+		return -EINVAL;
 	}
 
 	hw->fc.requested_mode = rte_fcmode_2_e1000_fcmode[fc_conf->mode];
@@ -2621,7 +2621,7 @@  eth_igb_flow_ctrl_set(struct rte_eth_dev *dev, struct rte_eth_fc_conf *fc_conf)
 	}
 
 	PMD_INIT_LOG(ERR, "e1000_setup_link_generic = 0x%x", err);
-	return (-EIO);
+	return -EIO;
 }
 
 #define E1000_RAH_POOLSEL_SHIFT      (18)
diff --git a/drivers/net/e1000/igb_rxtx.c b/drivers/net/e1000/igb_rxtx.c
index 996e7da..e7c30b7 100644
--- a/drivers/net/e1000/igb_rxtx.c
+++ b/drivers/net/e1000/igb_rxtx.c
@@ -86,7 +86,7 @@  rte_rxmbuf_alloc(struct rte_mempool *mp)
 
 	m = __rte_mbuf_raw_alloc(mp);
 	__rte_mbuf_sanity_check_raw(m, 0);
-	return (m);
+	return m;
 }
 
 #define RTE_MBUF_DATA_DMA_ADDR(mb) \
@@ -366,7 +366,7 @@  what_advctx_update(struct igb_tx_queue *txq, uint64_t flags,
 	}
 
 	/* Mismatch, use the previous context */
-	return (IGB_CTX_NUM);
+	return IGB_CTX_NUM;
 }
 
 static inline uint32_t
@@ -518,7 +518,7 @@  eth_igb_xmit_pkts(void *tx_queue, struct rte_mbuf **tx_pkts,
 		 */
 		if (! (txr[tx_end].wb.status & E1000_TXD_STAT_DD)) {
 			if (nb_tx == 0)
-				return (0);
+				return 0;
 			goto end_of_tx;
 		}
 
@@ -628,7 +628,7 @@  eth_igb_xmit_pkts(void *tx_queue, struct rte_mbuf **tx_pkts,
 		   (unsigned) tx_id, (unsigned) nb_tx);
 	txq->tx_tail = tx_id;
 
-	return (nb_tx);
+	return nb_tx;
 }
 
 /*********************************************************************
@@ -944,7 +944,7 @@  eth_igb_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts,
 		nb_hold = 0;
 	}
 	rxq->nb_rx_hold = nb_hold;
-	return (nb_rx);
+	return nb_rx;
 }
 
 uint16_t
@@ -1199,7 +1199,7 @@  eth_igb_recv_scattered_pkts(void *rx_queue, struct rte_mbuf **rx_pkts,
 		nb_hold = 0;
 	}
 	rxq->nb_rx_hold = nb_hold;
-	return (nb_rx);
+	return nb_rx;
 }
 
 /*
@@ -1335,7 +1335,7 @@  eth_igb_tx_queue_setup(struct rte_eth_dev *dev,
 	txq = rte_zmalloc("ethdev TX queue", sizeof(struct igb_tx_queue),
 							RTE_CACHE_LINE_SIZE);
 	if (txq == NULL)
-		return (-ENOMEM);
+		return -ENOMEM;
 
 	/*
 	 * Allocate TX ring hardware descriptors. A memzone large enough to
@@ -1347,7 +1347,7 @@  eth_igb_tx_queue_setup(struct rte_eth_dev *dev,
 				      E1000_ALIGN, socket_id);
 	if (tz == NULL) {
 		igb_tx_queue_release(txq);
-		return (-ENOMEM);
+		return -ENOMEM;
 	}
 
 	txq->nb_tx_desc = nb_desc;
@@ -1371,7 +1371,7 @@  eth_igb_tx_queue_setup(struct rte_eth_dev *dev,
 				   RTE_CACHE_LINE_SIZE);
 	if (txq->sw_ring == NULL) {
 		igb_tx_queue_release(txq);
-		return (-ENOMEM);
+		return -ENOMEM;
 	}
 	PMD_INIT_LOG(DEBUG, "sw_ring=%p hw_ring=%p dma_addr=0x%"PRIx64,
 		     txq->sw_ring, txq->tx_ring, txq->tx_ring_phys_addr);
@@ -1380,7 +1380,7 @@  eth_igb_tx_queue_setup(struct rte_eth_dev *dev,
 	dev->tx_pkt_burst = eth_igb_xmit_pkts;
 	dev->data->tx_queues[queue_idx] = txq;
 
-	return (0);
+	return 0;
 }
 
 static void
@@ -1453,7 +1453,7 @@  eth_igb_rx_queue_setup(struct rte_eth_dev *dev,
 	if (nb_desc % IGB_RXD_ALIGN != 0 ||
 			(nb_desc > E1000_MAX_RING_DESC) ||
 			(nb_desc < E1000_MIN_RING_DESC)) {
-		return (-EINVAL);
+		return -EINVAL;
 	}
 
 	/* Free memory prior to re-allocation if needed */
@@ -1466,7 +1466,7 @@  eth_igb_rx_queue_setup(struct rte_eth_dev *dev,
 	rxq = rte_zmalloc("ethdev RX queue", sizeof(struct igb_rx_queue),
 			  RTE_CACHE_LINE_SIZE);
 	if (rxq == NULL)
-		return (-ENOMEM);
+		return -ENOMEM;
 	rxq->mb_pool = mp;
 	rxq->nb_rx_desc = nb_desc;
 	rxq->pthresh = rx_conf->rx_thresh.pthresh;
@@ -1493,7 +1493,7 @@  eth_igb_rx_queue_setup(struct rte_eth_dev *dev,
 				      E1000_ALIGN, socket_id);
 	if (rz == NULL) {
 		igb_rx_queue_release(rxq);
-		return (-ENOMEM);
+		return -ENOMEM;
 	}
 	rxq->rdt_reg_addr = E1000_PCI_REG_ADDR(hw, E1000_RDT(rxq->reg_idx));
 	rxq->rdh_reg_addr = E1000_PCI_REG_ADDR(hw, E1000_RDH(rxq->reg_idx));
@@ -1506,7 +1506,7 @@  eth_igb_rx_queue_setup(struct rte_eth_dev *dev,
 				   RTE_CACHE_LINE_SIZE);
 	if (rxq->sw_ring == NULL) {
 		igb_rx_queue_release(rxq);
-		return (-ENOMEM);
+		return -ENOMEM;
 	}
 	PMD_INIT_LOG(DEBUG, "sw_ring=%p hw_ring=%p dma_addr=0x%"PRIx64,
 		     rxq->sw_ring, rxq->rx_ring, rxq->rx_ring_phys_addr);
@@ -1967,7 +1967,7 @@  igb_alloc_rx_queue_mbufs(struct igb_rx_queue *rxq)
 		if (mbuf == NULL) {
 			PMD_INIT_LOG(ERR, "RX mbuf alloc failed "
 				     "queue_id=%hu", rxq->queue_id);
-			return (-ENOMEM);
+			return -ENOMEM;
 		}
 		dma_addr =
 			rte_cpu_to_le_64(RTE_MBUF_DATA_DMA_ADDR_DEFAULT(mbuf));
diff --git a/drivers/net/fm10k/fm10k_ethdev.c b/drivers/net/fm10k/fm10k_ethdev.c
index e4aed94..421266b 100644
--- a/drivers/net/fm10k/fm10k_ethdev.c
+++ b/drivers/net/fm10k/fm10k_ethdev.c
@@ -1350,12 +1350,12 @@  fm10k_vlan_filter_set(struct rte_eth_dev *dev, uint16_t vlan_id, int on)
 
 	if (macvlan->nb_queue_pools > 0) { /* VMDQ mode */
 		PMD_INIT_LOG(ERR, "Cannot change VLAN filter in VMDQ mode");
-		return (-EINVAL);
+		return -EINVAL;
 	}
 
 	if (vlan_id > ETH_VLAN_ID_MAX) {
 		PMD_INIT_LOG(ERR, "Invalid vlan_id: must be < 4096");
-		return (-EINVAL);
+		return -EINVAL;
 	}
 
 	vid_idx = FM10K_VFTA_IDX(vlan_id);
@@ -1367,7 +1367,7 @@  fm10k_vlan_filter_set(struct rte_eth_dev *dev, uint16_t vlan_id, int on)
 	if (!on && !(macvlan->vfta[vid_idx] & vid_bit)) {
 		PMD_INIT_LOG(ERR, "Invalid vlan_id: not existing "
 			"in the VLAN filter table");
-		return (-EINVAL);
+		return -EINVAL;
 	}
 
 	fm10k_mbx_lock(hw);
@@ -1375,7 +1375,7 @@  fm10k_vlan_filter_set(struct rte_eth_dev *dev, uint16_t vlan_id, int on)
 	fm10k_mbx_unlock(hw);
 	if (result != FM10K_SUCCESS) {
 		PMD_INIT_LOG(ERR, "VLAN update failed: %d", result);
-		return (-EIO);
+		return -EIO;
 	}
 
 	for (mac_index = 0; (mac_index < FM10K_MAX_MACADDR_NUM) &&
@@ -1396,7 +1396,7 @@  fm10k_vlan_filter_set(struct rte_eth_dev *dev, uint16_t vlan_id, int on)
 	}
 	if (result != FM10K_SUCCESS) {
 		PMD_INIT_LOG(ERR, "MAC address update failed: %d", result);
-		return (-EIO);
+		return -EIO;
 	}
 
 	if (on) {
@@ -1579,7 +1579,7 @@  handle_rxconf(struct fm10k_rx_queue *q, const struct rte_eth_rxconf *conf)
 			rx_free_thresh, FM10K_RX_FREE_THRESH_MAX(q),
 			FM10K_RX_FREE_THRESH_MIN(q),
 			FM10K_RX_FREE_THRESH_DIV(q));
-		return (-EINVAL);
+		return -EINVAL;
 	}
 
 	q->alloc_thresh = rx_free_thresh;
@@ -1635,7 +1635,7 @@  fm10k_rx_queue_setup(struct rte_eth_dev *dev, uint16_t queue_id,
 	/* make sure the mempool element size can account for alignment. */
 	if (!mempool_element_size_valid(mp)) {
 		PMD_INIT_LOG(ERR, "Error : Mempool element size is too small");
-		return (-EINVAL);
+		return -EINVAL;
 	}
 
 	/* make sure a valid number of descriptors have been requested */
@@ -1647,7 +1647,7 @@  fm10k_rx_queue_setup(struct rte_eth_dev *dev, uint16_t queue_id,
 			"and a multiple of %u",
 			nb_desc, (uint32_t)FM10K_MAX_RX_DESC, FM10K_MIN_RX_DESC,
 			FM10K_MULT_RX_DESC);
-		return (-EINVAL);
+		return -EINVAL;
 	}
 
 	/*
@@ -1665,7 +1665,7 @@  fm10k_rx_queue_setup(struct rte_eth_dev *dev, uint16_t queue_id,
 				socket_id);
 	if (q == NULL) {
 		PMD_INIT_LOG(ERR, "Cannot allocate queue structure");
-		return (-ENOMEM);
+		return -ENOMEM;
 	}
 
 	/* setup queue */
@@ -1677,7 +1677,7 @@  fm10k_rx_queue_setup(struct rte_eth_dev *dev, uint16_t queue_id,
 	q->tail_ptr = (volatile uint32_t *)
 		&((uint32_t *)hw->hw_addr)[FM10K_RDT(queue_id)];
 	if (handle_rxconf(q, conf))
-		return (-EINVAL);
+		return -EINVAL;
 
 	/* allocate memory for the software ring */
 	q->sw_ring = rte_zmalloc_socket("fm10k sw ring",
@@ -1686,7 +1686,7 @@  fm10k_rx_queue_setup(struct rte_eth_dev *dev, uint16_t queue_id,
 	if (q->sw_ring == NULL) {
 		PMD_INIT_LOG(ERR, "Cannot allocate software ring");
 		rte_free(q);
-		return (-ENOMEM);
+		return -ENOMEM;
 	}
 
 	/*
@@ -1701,7 +1701,7 @@  fm10k_rx_queue_setup(struct rte_eth_dev *dev, uint16_t queue_id,
 		PMD_INIT_LOG(ERR, "Cannot allocate hardware ring");
 		rte_free(q->sw_ring);
 		rte_free(q);
-		return (-ENOMEM);
+		return -ENOMEM;
 	}
 	q->hw_ring = mz->addr;
 	q->hw_ring_phys_addr = rte_mem_phy2mch(mz->memseg_id, mz->phys_addr);
@@ -1753,7 +1753,7 @@  handle_txconf(struct fm10k_tx_queue *q, const struct rte_eth_txconf *conf)
 			tx_free_thresh, FM10K_TX_FREE_THRESH_MAX(q),
 			FM10K_TX_FREE_THRESH_MIN(q),
 			FM10K_TX_FREE_THRESH_DIV(q));
-		return (-EINVAL);
+		return -EINVAL;
 	}
 
 	q->free_thresh = tx_free_thresh;
@@ -1777,7 +1777,7 @@  handle_txconf(struct fm10k_tx_queue *q, const struct rte_eth_txconf *conf)
 			tx_rs_thresh, FM10K_TX_RS_THRESH_MAX(q),
 			FM10K_TX_RS_THRESH_MIN(q),
 			FM10K_TX_RS_THRESH_DIV(q));
-		return (-EINVAL);
+		return -EINVAL;
 	}
 
 	q->rs_thresh = tx_rs_thresh;
@@ -1805,7 +1805,7 @@  fm10k_tx_queue_setup(struct rte_eth_dev *dev, uint16_t queue_id,
 			"and a multiple of %u",
 			nb_desc, (uint32_t)FM10K_MAX_TX_DESC, FM10K_MIN_TX_DESC,
 			FM10K_MULT_TX_DESC);
-		return (-EINVAL);
+		return -EINVAL;
 	}
 
 	/*
@@ -1825,7 +1825,7 @@  fm10k_tx_queue_setup(struct rte_eth_dev *dev, uint16_t queue_id,
 				socket_id);
 	if (q == NULL) {
 		PMD_INIT_LOG(ERR, "Cannot allocate queue structure");
-		return (-ENOMEM);
+		return -ENOMEM;
 	}
 
 	/* setup queue */
@@ -1837,7 +1837,7 @@  fm10k_tx_queue_setup(struct rte_eth_dev *dev, uint16_t queue_id,
 	q->tail_ptr = (volatile uint32_t *)
 		&((uint32_t *)hw->hw_addr)[FM10K_TDT(queue_id)];
 	if (handle_txconf(q, conf))
-		return (-EINVAL);
+		return -EINVAL;
 
 	/* allocate memory for the software ring */
 	q->sw_ring = rte_zmalloc_socket("fm10k sw ring",
@@ -1846,7 +1846,7 @@  fm10k_tx_queue_setup(struct rte_eth_dev *dev, uint16_t queue_id,
 	if (q->sw_ring == NULL) {
 		PMD_INIT_LOG(ERR, "Cannot allocate software ring");
 		rte_free(q);
-		return (-ENOMEM);
+		return -ENOMEM;
 	}
 
 	/*
@@ -1861,7 +1861,7 @@  fm10k_tx_queue_setup(struct rte_eth_dev *dev, uint16_t queue_id,
 		PMD_INIT_LOG(ERR, "Cannot allocate hardware ring");
 		rte_free(q->sw_ring);
 		rte_free(q);
-		return (-ENOMEM);
+		return -ENOMEM;
 	}
 	q->hw_ring = mz->addr;
 	q->hw_ring_phys_addr = rte_mem_phy2mch(mz->memseg_id, mz->phys_addr);
@@ -1878,7 +1878,7 @@  fm10k_tx_queue_setup(struct rte_eth_dev *dev, uint16_t queue_id,
 		PMD_INIT_LOG(ERR, "Cannot allocate RS bit tracker");
 		rte_free(q->sw_ring);
 		rte_free(q);
-		return (-ENOMEM);
+		return -ENOMEM;
 	}
 
 	dev->data->tx_queues[queue_id] = q;
diff --git a/drivers/net/i40e/i40e_ethdev.c b/drivers/net/i40e/i40e_ethdev.c
index bf6220d..ef24122 100644
--- a/drivers/net/i40e/i40e_ethdev.c
+++ b/drivers/net/i40e/i40e_ethdev.c
@@ -3413,7 +3413,7 @@  i40e_res_pool_alloc(struct i40e_res_pool_info *pool,
 	pool->num_free -= valid_entry->len;
 	pool->num_alloc += valid_entry->len;
 
-	return (valid_entry->base + pool->base);
+	return valid_entry->base + pool->base;
 }
 
 /**
diff --git a/drivers/net/i40e/i40e_ethdev.h b/drivers/net/i40e/i40e_ethdev.h
index 1f9792b..6edd7dd 100644
--- a/drivers/net/i40e/i40e_ethdev.h
+++ b/drivers/net/i40e/i40e_ethdev.h
@@ -656,7 +656,7 @@  i40e_calc_itr_interval(int16_t interval)
 		interval = I40E_QUEUE_ITR_INTERVAL_DEFAULT;
 
 	/* Convert to hardware count, as writing each 1 represents 2 us */
-	return (interval / 2);
+	return interval / 2;
 }
 
 #define I40E_VALID_FLOW(flow_type) \
diff --git a/drivers/net/i40e/i40e_ethdev_vf.c b/drivers/net/i40e/i40e_ethdev_vf.c
index 14d2a50..13c5b3d 100644
--- a/drivers/net/i40e/i40e_ethdev_vf.c
+++ b/drivers/net/i40e/i40e_ethdev_vf.c
@@ -416,7 +416,7 @@  i40evf_execute_vf_cmd(struct rte_eth_dev *dev, struct vf_cmd_info *args)
 		PMD_DRV_LOG(ERR, "command mismatch, expect %u, get %u",
 			    args->ops, info.ops);
 
-	return (err | info.result);
+	return err | info.result;
 }
 
 /*
diff --git a/drivers/net/i40e/i40e_rxtx.c b/drivers/net/i40e/i40e_rxtx.c
index 39d94ec..40cffc1 100644
--- a/drivers/net/i40e/i40e_rxtx.c
+++ b/drivers/net/i40e/i40e_rxtx.c
@@ -1483,7 +1483,7 @@  i40e_calc_context_desc(uint64_t flags)
 	mask |= PKT_TX_IEEE1588_TMST;
 #endif
 
-	return ((flags & mask) ? 1 : 0);
+	return (flags & mask) ? 1 : 0;
 }
 
 /* set i40e TSO context descriptor */
@@ -2147,7 +2147,7 @@  i40e_dev_rx_queue_setup(struct rte_eth_dev *dev,
 	if (!rxq) {
 		PMD_DRV_LOG(ERR, "Failed to allocate memory for "
 			    "rx queue data structure");
-		return (-ENOMEM);
+		return -ENOMEM;
 	}
 	rxq->mp = mp;
 	rxq->nb_rx_desc = nb_desc;
@@ -2174,7 +2174,7 @@  i40e_dev_rx_queue_setup(struct rte_eth_dev *dev,
 	if (!rz) {
 		i40e_dev_rx_queue_release(rxq);
 		PMD_DRV_LOG(ERR, "Failed to reserve DMA memory for RX");
-		return (-ENOMEM);
+		return -ENOMEM;
 	}
 
 	/* Zero all the descriptors in the ring. */
@@ -2198,7 +2198,7 @@  i40e_dev_rx_queue_setup(struct rte_eth_dev *dev,
 	if (!rxq->sw_ring) {
 		i40e_dev_rx_queue_release(rxq);
 		PMD_DRV_LOG(ERR, "Failed to allocate memory for SW ring");
-		return (-ENOMEM);
+		return -ENOMEM;
 	}
 
 	i40e_reset_rx_queue(rxq);
@@ -2437,7 +2437,7 @@  i40e_dev_tx_queue_setup(struct rte_eth_dev *dev,
 	if (!txq) {
 		PMD_DRV_LOG(ERR, "Failed to allocate memory for "
 			    "tx queue structure");
-		return (-ENOMEM);
+		return -ENOMEM;
 	}
 
 	/* Allocate TX hardware ring descriptors. */
@@ -2448,7 +2448,7 @@  i40e_dev_tx_queue_setup(struct rte_eth_dev *dev,
 	if (!tz) {
 		i40e_dev_tx_queue_release(txq);
 		PMD_DRV_LOG(ERR, "Failed to reserve DMA memory for TX");
-		return (-ENOMEM);
+		return -ENOMEM;
 	}
 
 	txq->nb_tx_desc = nb_desc;
@@ -2481,7 +2481,7 @@  i40e_dev_tx_queue_setup(struct rte_eth_dev *dev,
 	if (!txq->sw_ring) {
 		i40e_dev_tx_queue_release(txq);
 		PMD_DRV_LOG(ERR, "Failed to allocate memory for SW TX ring");
-		return (-ENOMEM);
+		return -ENOMEM;
 	}
 
 	i40e_reset_tx_queue(txq);
diff --git a/drivers/net/ixgbe/ixgbe_82599_bypass.c b/drivers/net/ixgbe/ixgbe_82599_bypass.c
index 76d75fb..21c42ea 100644
--- a/drivers/net/ixgbe/ixgbe_82599_bypass.c
+++ b/drivers/net/ixgbe/ixgbe_82599_bypass.c
@@ -268,7 +268,7 @@  ixgbe_bypass_get_media_type(struct ixgbe_hw *hw)
 	} else {
 		media_type = ixgbe_get_media_type_82599(hw);
 	}
-	return (media_type);
+	return media_type;
 }
 
 /*
@@ -310,5 +310,5 @@  ixgbe_bypass_init_hw(struct ixgbe_hw *hw)
                 hw->mac.ops.flap_tx_laser = NULL;
 	}
 
-	return (rc);
+	return rc;
 }
diff --git a/drivers/net/ixgbe/ixgbe_bypass.c b/drivers/net/ixgbe/ixgbe_bypass.c
index 832f415..e846946 100644
--- a/drivers/net/ixgbe/ixgbe_bypass.c
+++ b/drivers/net/ixgbe/ixgbe_bypass.c
@@ -153,7 +153,7 @@  ixgbe_bypass_state_show(struct rte_eth_dev *dev, u32 *state)
 	 */
 	*state = (by_ctl >> BYPASS_STATUS_OFF_SHIFT) &  BYPASS_STATUS_OFF_MASK;
 
-	return (ret_val);
+	return ret_val;
 }
 
 
diff --git a/drivers/net/ixgbe/ixgbe_ethdev.c b/drivers/net/ixgbe/ixgbe_ethdev.c
index 4c4c6df..3e6fe86 100644
--- a/drivers/net/ixgbe/ixgbe_ethdev.c
+++ b/drivers/net/ixgbe/ixgbe_ethdev.c
@@ -1323,7 +1323,7 @@  eth_ixgbevf_dev_init(struct rte_eth_dev *eth_dev)
 	 */
 	if ((diag != IXGBE_SUCCESS) && (diag != IXGBE_ERR_INVALID_MAC_ADDR)) {
 		PMD_INIT_LOG(ERR, "VF Initialization Failure: %d", diag);
-		return (diag);
+		return diag;
 	}
 
 	/* negotiate mailbox API version to use with the PF. */
@@ -1374,7 +1374,7 @@  eth_ixgbevf_dev_init(struct rte_eth_dev *eth_dev)
 
 		default:
 			PMD_INIT_LOG(ERR, "VF Initialization Failure: %d", diag);
-			return (-EIO);
+			return -EIO;
 	}
 
 	PMD_INIT_LOG(DEBUG, "port %d vendorID=0x%x deviceID=0x%x mac.type=%s",
@@ -1478,7 +1478,7 @@  rte_ixgbevf_pmd_init(const char *name __rte_unused, const char *param __rte_unus
 	PMD_INIT_FUNC_TRACE();
 
 	rte_eth_driver_register(&rte_ixgbevf_pmd);
-	return (0);
+	return 0;
 }
 
 static int
@@ -2162,7 +2162,7 @@  skip_link_setup:
 
 	ixgbe_restore_statistics_mapping(dev);
 
-	return (0);
+	return 0;
 
 error:
 	PMD_INIT_LOG(ERR, "failure in ixgbe_dev_start(): %d", err);
@@ -3248,7 +3248,7 @@  ixgbe_dev_led_on(struct rte_eth_dev *dev)
 	struct ixgbe_hw *hw;
 
 	hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
-	return (ixgbe_led_on(hw, 0) == IXGBE_SUCCESS ? 0 : -ENOTSUP);
+	return ixgbe_led_on(hw, 0) == IXGBE_SUCCESS ? 0 : -ENOTSUP;
 }
 
 static int
@@ -3257,7 +3257,7 @@  ixgbe_dev_led_off(struct rte_eth_dev *dev)
 	struct ixgbe_hw *hw;
 
 	hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
-	return (ixgbe_led_off(hw, 0) == IXGBE_SUCCESS ? 0 : -ENOTSUP);
+	return ixgbe_led_off(hw, 0) == IXGBE_SUCCESS ? 0 : -ENOTSUP;
 }
 
 static int
@@ -3339,7 +3339,7 @@  ixgbe_flow_ctrl_set(struct rte_eth_dev *dev, struct rte_eth_fc_conf *fc_conf)
 		(fc_conf->high_water < fc_conf->low_water)) {
 		PMD_INIT_LOG(ERR, "Invalid high/low water setup value in KB");
 		PMD_INIT_LOG(ERR, "High_water must <= 0x%x", max_high_water);
-		return (-EINVAL);
+		return -EINVAL;
 	}
 
 	hw->fc.requested_mode = rte_fcmode_2_ixgbe_fcmode[fc_conf->mode];
@@ -3561,7 +3561,7 @@  ixgbe_priority_flow_ctrl_set(struct rte_eth_dev *dev, struct rte_eth_pfc_conf *p
 	    (pfc_conf->fc.high_water <= pfc_conf->fc.low_water)) {
 		PMD_INIT_LOG(ERR, "Invalid high/low water setup value in KB");
 		PMD_INIT_LOG(ERR, "High_water must <= 0x%x", max_high_water);
-		return (-EINVAL);
+		return -EINVAL;
 	}
 
 	hw->fc.requested_mode = rte_fcmode_2_ixgbe_fcmode[pfc_conf->fc.mode];
@@ -4026,7 +4026,7 @@  ixgbe_vmdq_mode_check(struct ixgbe_hw *hw)
 	reg_val = IXGBE_READ_REG(hw, IXGBE_VT_CTL);
 	if (!(reg_val & IXGBE_VT_CTL_VT_ENABLE)) {
 		PMD_INIT_LOG(ERR, "VMDq must be enabled for this setting");
-		return (-1);
+		return -1;
 	}
 
 	return 0;
@@ -4083,7 +4083,7 @@  ixgbe_uc_hash_table_set(struct rte_eth_dev *dev,struct ether_addr* mac_addr,
 
 	/* The UTA table only exists on 82599 hardware and newer */
 	if (hw->mac.type < ixgbe_mac_82599EB)
-		return (-ENOTSUP);
+		return -ENOTSUP;
 
 	vector = ixgbe_uta_vector(hw,mac_addr);
 	uta_idx = (vector >> ixgbe_uta_bit_shift) & ixgbe_uta_idx_mask;
@@ -4126,7 +4126,7 @@  ixgbe_uc_all_hash_table_set(struct rte_eth_dev *dev, uint8_t on)
 
 	/* The UTA table only exists on 82599 hardware and newer */
 	if (hw->mac.type < ixgbe_mac_82599EB)
-		return (-ENOTSUP);
+		return -ENOTSUP;
 
 	if(on) {
 		for (i = 0; i < ETH_VMDQ_NUM_UC_HASH_ARRAY; i++) {
@@ -4175,10 +4175,10 @@  ixgbe_set_pool_rx_mode(struct rte_eth_dev *dev, uint16_t pool,
 	if (hw->mac.type == ixgbe_mac_82598EB) {
 		PMD_INIT_LOG(ERR, "setting VF receive mode set should be done"
 			     " on 82599 hardware and newer");
-		return (-ENOTSUP);
+		return -ENOTSUP;
 	}
 	if (ixgbe_vmdq_mode_check(hw) < 0)
-		return (-ENOTSUP);
+		return -ENOTSUP;
 
 	val = ixgbe_convert_vm_rx_mask_to_val(rx_mask, val);
 
@@ -4203,7 +4203,7 @@  ixgbe_set_pool_rx(struct rte_eth_dev *dev, uint16_t pool, uint8_t on)
 		IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
 
 	if (ixgbe_vmdq_mode_check(hw) < 0)
-		return (-ENOTSUP);
+		return -ENOTSUP;
 
 	addr = IXGBE_VFRE(pool >= ETH_64_POOLS/2);
 	reg = IXGBE_READ_REG(hw, addr);
@@ -4230,7 +4230,7 @@  ixgbe_set_pool_tx(struct rte_eth_dev *dev, uint16_t pool, uint8_t on)
 		IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
 
 	if (ixgbe_vmdq_mode_check(hw) < 0)
-		return (-ENOTSUP);
+		return -ENOTSUP;
 
 	addr = IXGBE_VFTE(pool >= ETH_64_POOLS/2);
 	reg = IXGBE_READ_REG(hw, addr);
@@ -4256,7 +4256,7 @@  ixgbe_set_pool_vlan_filter(struct rte_eth_dev *dev, uint16_t vlan,
 		IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
 
 	if (ixgbe_vmdq_mode_check(hw) < 0)
-		return (-ENOTSUP);
+		return -ENOTSUP;
 	for (pool_idx = 0; pool_idx < ETH_64_POOLS; pool_idx++) {
 		if (pool_mask & ((uint64_t)(1ULL << pool_idx)))
 			ret = hw->mac.ops.set_vfta(hw,vlan,pool_idx,vlan_on);
@@ -4422,7 +4422,7 @@  ixgbe_mirror_rule_reset(struct rte_eth_dev *dev, uint8_t rule_id)
 		(IXGBE_DEV_PRIVATE_TO_PFDATA(dev->data->dev_private));
 
 	if (ixgbe_vmdq_mode_check(hw) < 0)
-		return (-ENOTSUP);
+		return -ENOTSUP;
 
 	memset(&mr_info->mr_conf[rule_id], 0,
 		sizeof(struct rte_eth_mirror_conf));
diff --git a/drivers/net/ixgbe/ixgbe_rxtx.c b/drivers/net/ixgbe/ixgbe_rxtx.c
index 52a263c..e95e6b7 100644
--- a/drivers/net/ixgbe/ixgbe_rxtx.c
+++ b/drivers/net/ixgbe/ixgbe_rxtx.c
@@ -94,7 +94,7 @@  rte_rxmbuf_alloc(struct rte_mempool *mp)
 
 	m = __rte_mbuf_raw_alloc(mp);
 	__rte_mbuf_sanity_check_raw(m, 0);
-	return (m);
+	return m;
 }
 
 
@@ -468,7 +468,7 @@  what_advctx_update(struct ixgbe_tx_queue *txq, uint64_t flags,
 	}
 
 	/* Mismatch, use the previous context */
-	return (IXGBE_CTX_NUM);
+	return IXGBE_CTX_NUM;
 }
 
 static inline uint32_t
@@ -561,7 +561,7 @@  ixgbe_xmit_cleanup(struct ixgbe_tx_queue *txq)
 	txq->nb_tx_free = (uint16_t)(txq->nb_tx_free + nb_tx_to_clean);
 
 	/* No Error */
-	return (0);
+	return 0;
 }
 
 uint16_t
@@ -683,7 +683,7 @@  ixgbe_xmit_pkts(void *tx_queue, struct rte_mbuf **tx_pkts,
 			if (ixgbe_xmit_cleanup(txq) != 0) {
 				/* Could not clean any descriptors */
 				if (nb_tx == 0)
-					return (0);
+					return 0;
 				goto end_of_tx;
 			}
 
@@ -712,7 +712,7 @@  ixgbe_xmit_pkts(void *tx_queue, struct rte_mbuf **tx_pkts,
 						 * descriptors
 						 */
 						if (nb_tx == 0)
-							return (0);
+							return 0;
 						goto end_of_tx;
 					}
 				}
@@ -870,7 +870,7 @@  end_of_tx:
 	IXGBE_PCI_REG_WRITE(txq->tdt_reg_addr, tx_id);
 	txq->tx_tail = tx_id;
 
-	return (nb_tx);
+	return nb_tx;
 }
 
 /*********************************************************************
@@ -1136,7 +1136,7 @@  ixgbe_rx_alloc_bufs(struct ixgbe_rx_queue *rxq, bool reset_mbuf)
 	diag = rte_mempool_get_bulk(rxq->mb_pool, (void *)rxep,
 				    rxq->rx_free_thresh);
 	if (unlikely(diag != 0))
-		return (-ENOMEM);
+		return -ENOMEM;
 
 	rxdp = &rxq->rx_ring[alloc_idx];
 	for (i = 0; i < rxq->rx_free_thresh; ++i) {
@@ -1458,7 +1458,7 @@  ixgbe_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts,
 		nb_hold = 0;
 	}
 	rxq->nb_rx_hold = nb_hold;
-	return (nb_rx);
+	return nb_rx;
 }
 
 /**
@@ -2068,7 +2068,7 @@  ixgbe_dev_tx_queue_setup(struct rte_eth_dev *dev,
 	txq = rte_zmalloc_socket("ethdev TX queue", sizeof(struct ixgbe_tx_queue),
 				 RTE_CACHE_LINE_SIZE, socket_id);
 	if (txq == NULL)
-		return (-ENOMEM);
+		return -ENOMEM;
 
 	/*
 	 * Allocate TX ring hardware descriptors. A memzone large enough to
@@ -2080,7 +2080,7 @@  ixgbe_dev_tx_queue_setup(struct rte_eth_dev *dev,
 			IXGBE_ALIGN, socket_id);
 	if (tz == NULL) {
 		ixgbe_tx_queue_release(txq);
-		return (-ENOMEM);
+		return -ENOMEM;
 	}
 
 	txq->nb_tx_desc = nb_desc;
@@ -2117,7 +2117,7 @@  ixgbe_dev_tx_queue_setup(struct rte_eth_dev *dev,
 				RTE_CACHE_LINE_SIZE, socket_id);
 	if (txq->sw_ring == NULL) {
 		ixgbe_tx_queue_release(txq);
-		return (-ENOMEM);
+		return -ENOMEM;
 	}
 	PMD_INIT_LOG(DEBUG, "sw_ring=%p hw_ring=%p dma_addr=0x%"PRIx64,
 		     txq->sw_ring, txq->tx_ring, txq->tx_ring_phys_addr);
@@ -2130,7 +2130,7 @@  ixgbe_dev_tx_queue_setup(struct rte_eth_dev *dev,
 	dev->data->tx_queues[queue_idx] = txq;
 
 
-	return (0);
+	return 0;
 }
 
 /**
@@ -2347,7 +2347,7 @@  ixgbe_dev_rx_queue_setup(struct rte_eth_dev *dev,
 	if (nb_desc % IXGBE_RXD_ALIGN != 0 ||
 			(nb_desc > IXGBE_MAX_RING_DESC) ||
 			(nb_desc < IXGBE_MIN_RING_DESC)) {
-		return (-EINVAL);
+		return -EINVAL;
 	}
 
 	/* Free memory prior to re-allocation if needed... */
@@ -2360,7 +2360,7 @@  ixgbe_dev_rx_queue_setup(struct rte_eth_dev *dev,
 	rxq = rte_zmalloc_socket("ethdev RX queue", sizeof(struct ixgbe_rx_queue),
 				 RTE_CACHE_LINE_SIZE, socket_id);
 	if (rxq == NULL)
-		return (-ENOMEM);
+		return -ENOMEM;
 	rxq->mb_pool = mp;
 	rxq->nb_rx_desc = nb_desc;
 	rxq->rx_free_thresh = rx_conf->rx_free_thresh;
@@ -2382,7 +2382,7 @@  ixgbe_dev_rx_queue_setup(struct rte_eth_dev *dev,
 				      RX_RING_SZ, IXGBE_ALIGN, socket_id);
 	if (rz == NULL) {
 		ixgbe_rx_queue_release(rxq);
-		return (-ENOMEM);
+		return -ENOMEM;
 	}
 
 	/*
@@ -2439,7 +2439,7 @@  ixgbe_dev_rx_queue_setup(struct rte_eth_dev *dev,
 					  RTE_CACHE_LINE_SIZE, socket_id);
 	if (!rxq->sw_ring) {
 		ixgbe_rx_queue_release(rxq);
-		return (-ENOMEM);
+		return -ENOMEM;
 	}
 
 	/*
@@ -2456,7 +2456,7 @@  ixgbe_dev_rx_queue_setup(struct rte_eth_dev *dev,
 				   RTE_CACHE_LINE_SIZE, socket_id);
 	if (!rxq->sw_sc_ring) {
 		ixgbe_rx_queue_release(rxq);
-		return (-ENOMEM);
+		return -ENOMEM;
 	}
 
 	PMD_INIT_LOG(DEBUG, "sw_ring=%p sw_sc_ring=%p hw_ring=%p "
@@ -3584,7 +3584,7 @@  ixgbe_alloc_rx_queue_mbufs(struct ixgbe_rx_queue *rxq)
 		if (mbuf == NULL) {
 			PMD_INIT_LOG(ERR, "RX mbuf alloc failed queue_id=%u",
 				     (unsigned) rxq->queue_id);
-			return (-ENOMEM);
+			return -ENOMEM;
 		}
 
 		rte_mbuf_refcnt_set(mbuf, 1);
diff --git a/drivers/net/mlx5/mlx5_utils.h b/drivers/net/mlx5/mlx5_utils.h
index 9b5e86a..a824787 100644
--- a/drivers/net/mlx5/mlx5_utils.h
+++ b/drivers/net/mlx5/mlx5_utils.h
@@ -178,7 +178,7 @@  log2above(unsigned int v)
 
 	for (l = 0, r = 0; (v >> 1); ++l, v >>= 1)
 		r |= (v & 1);
-	return (l + r);
+	return l + r;
 }
 
 #endif /* RTE_PMD_MLX5_UTILS_H_ */
diff --git a/drivers/net/mpipe/mpipe_tilegx.c b/drivers/net/mpipe/mpipe_tilegx.c
index 35134ba..04f3c9f 100644
--- a/drivers/net/mpipe/mpipe_tilegx.c
+++ b/drivers/net/mpipe/mpipe_tilegx.c
@@ -361,8 +361,8 @@  static inline int
 mpipe_link_compare(struct rte_eth_link *link1,
 		   struct rte_eth_link *link2)
 {
-	return ((*(uint64_t *)link1 == *(uint64_t *)link2)
-		? -1 : 0);
+	return (*(uint64_t *)link1 == *(uint64_t *)link2)
+		? -1 : 0;
 }
 
 static int
diff --git a/drivers/net/nfp/nfp_net.c b/drivers/net/nfp/nfp_net.c
index bc2089f..ffa5730 100644
--- a/drivers/net/nfp/nfp_net.c
+++ b/drivers/net/nfp/nfp_net.c
@@ -1275,7 +1275,7 @@  nfp_net_rx_queue_setup(struct rte_eth_dev *dev,
 	    (nb_desc > NFP_NET_MAX_RX_DESC) ||
 	    (nb_desc < NFP_NET_MIN_RX_DESC)) {
 		RTE_LOG(ERR, PMD, "Wrong nb_desc value\n");
-		return (-EINVAL);
+		return -EINVAL;
 	}
 
 	/*
@@ -1291,7 +1291,7 @@  nfp_net_rx_queue_setup(struct rte_eth_dev *dev,
 	rxq = rte_zmalloc_socket("ethdev RX queue", sizeof(struct nfp_net_rxq),
 				 RTE_CACHE_LINE_SIZE, socket_id);
 	if (rxq == NULL)
-		return (-ENOMEM);
+		return -ENOMEM;
 
 	/* Hw queues mapping based on firmware confifguration */
 	rxq->qidx = queue_idx;
@@ -1328,7 +1328,7 @@  nfp_net_rx_queue_setup(struct rte_eth_dev *dev,
 	if (tz == NULL) {
 		RTE_LOG(ERR, PMD, "Error allocatig rx dma\n");
 		nfp_net_rx_queue_release(rxq);
-		return (-ENOMEM);
+		return -ENOMEM;
 	}
 
 	/* Saving physical and virtual addresses for the RX ring */
@@ -1341,7 +1341,7 @@  nfp_net_rx_queue_setup(struct rte_eth_dev *dev,
 					 RTE_CACHE_LINE_SIZE, socket_id);
 	if (rxq->rxbufs == NULL) {
 		nfp_net_rx_queue_release(rxq);
-		return (-ENOMEM);
+		return -ENOMEM;
 	}
 
 	PMD_RX_LOG(DEBUG, "rxbufs=%p hw_ring=%p dma_addr=0x%" PRIx64 "\n",
@@ -1379,7 +1379,7 @@  nfp_net_rx_fill_freelist(struct nfp_net_rxq *rxq)
 		if (mbuf == NULL) {
 			RTE_LOG(ERR, PMD, "RX mbuf alloc failed queue_id=%u\n",
 				(unsigned)rxq->qidx);
-			return (-ENOMEM);
+			return -ENOMEM;
 		}
 
 		dma_addr = rte_cpu_to_le_64(RTE_MBUF_DMA_ADDR_DEFAULT(mbuf));
@@ -1457,7 +1457,7 @@  nfp_net_tx_queue_setup(struct rte_eth_dev *dev, uint16_t queue_idx,
 				 RTE_CACHE_LINE_SIZE, socket_id);
 	if (txq == NULL) {
 		RTE_LOG(ERR, PMD, "Error allocating tx dma\n");
-		return (-ENOMEM);
+		return -ENOMEM;
 	}
 
 	/*
@@ -1471,7 +1471,7 @@  nfp_net_tx_queue_setup(struct rte_eth_dev *dev, uint16_t queue_idx,
 	if (tz == NULL) {
 		RTE_LOG(ERR, PMD, "Error allocating tx dma\n");
 		nfp_net_tx_queue_release(txq);
-		return (-ENOMEM);
+		return -ENOMEM;
 	}
 
 	txq->tx_count = nb_desc;
@@ -1499,7 +1499,7 @@  nfp_net_tx_queue_setup(struct rte_eth_dev *dev, uint16_t queue_idx,
 					 RTE_CACHE_LINE_SIZE, socket_id);
 	if (txq->txbufs == NULL) {
 		nfp_net_tx_queue_release(txq);
-		return (-ENOMEM);
+		return -ENOMEM;
 	}
 	PMD_TX_LOG(DEBUG, "txbufs=%p hw_ring=%p dma_addr=0x%" PRIx64 "\n",
 		   txq->txbufs, txq->txds, (unsigned long int)txq->dma);
diff --git a/drivers/net/virtio/virtio_ethdev.c b/drivers/net/virtio/virtio_ethdev.c
index d928339..b1538f7 100644
--- a/drivers/net/virtio/virtio_ethdev.c
+++ b/drivers/net/virtio/virtio_ethdev.c
@@ -337,7 +337,7 @@  int virtio_dev_queue_setup(struct rte_eth_dev *dev,
 	}
 	if (vq == NULL) {
 		PMD_INIT_LOG(ERR, "%s: Can not allocate virtqueue", __func__);
-		return (-ENOMEM);
+		return -ENOMEM;
 	}
 	if (queue_type == VTNET_RQ && vq->sw_ring == NULL) {
 		PMD_INIT_LOG(ERR, "%s: Can not allocate RX soft ring",
@@ -1074,7 +1074,7 @@  virtio_has_msix(const struct rte_pci_addr *loc)
 	if (d)
 		closedir(d);
 
-	return (d != NULL);
+	return d != NULL;
 }
 
 /* Extract I/O port numbers from sysfs */
@@ -1479,7 +1479,7 @@  virtio_dev_configure(struct rte_eth_dev *dev)
 
 	if (rxmode->hw_ip_checksum) {
 		PMD_DRV_LOG(ERR, "HW IP checksum not supported");
-		return (-EINVAL);
+		return -EINVAL;
 	}
 
 	hw->vlan_strip = rxmode->hw_vlan_strip;
diff --git a/examples/ip_pipeline/cpu_core_map.c b/examples/ip_pipeline/cpu_core_map.c
index 331b946..75523b2 100644
--- a/examples/ip_pipeline/cpu_core_map.c
+++ b/examples/ip_pipeline/cpu_core_map.c
@@ -276,7 +276,7 @@  cpu_core_map_get_n_lcores_linux(void)
 	if (string == NULL)
 		return -1;
 
-	return (atoi(++string) + 1);
+	return atoi(++string) + 1;
 }
 
 #define FILE_LINUX_CPU_CORE_ID \
diff --git a/examples/ip_pipeline/pipeline/pipeline_flow_actions_be.c b/examples/ip_pipeline/pipeline/pipeline_flow_actions_be.c
index 73dbe7a..ec149c8 100644
--- a/examples/ip_pipeline/pipeline/pipeline_flow_actions_be.c
+++ b/examples/ip_pipeline/pipeline/pipeline_flow_actions_be.c
@@ -380,7 +380,7 @@  pkt4_work(
 	*pkt2_color = color3_2;
 	*pkt3_color = color3_3;
 
-	return (drop0 | (drop1 << 1) | (drop2 << 2) | (drop3 << 3));
+	return drop0 | (drop1 << 1) | (drop2 << 2) | (drop3 << 3);
 }
 
 PIPELINE_TABLE_AH_HIT_DROP_TIME(fa_table_ah_hit, pkt_work, pkt4_work);
diff --git a/examples/ip_reassembly/main.c b/examples/ip_reassembly/main.c
index 741c398..262820e 100644
--- a/examples/ip_reassembly/main.c
+++ b/examples/ip_reassembly/main.c
@@ -304,7 +304,7 @@  send_burst(struct lcore_queue_conf *qconf, uint32_t thresh, uint8_t port)
 			txmb->tail = 0;
 	}
 
-	return (fill);
+	return fill;
 }
 
 /* Enqueue a single packet, and send burst if queue is filled */
@@ -335,7 +335,7 @@  send_single_packet(struct rte_mbuf *m, uint8_t port)
 	if(++txmb->head == len)
 		txmb->head = 0;
 
-	return (0);
+	return 0;
 }
 
 static inline void
@@ -561,13 +561,13 @@  parse_flow_num(const char *str, uint32_t min, uint32_t max, uint32_t *val)
 	errno = 0;
 	v = strtoul(str, &end, 10);
 	if (errno != 0 || *end != '\0')
-		return (-EINVAL);
+		return -EINVAL;
 
 	if (v < min || v > max)
-		return (-EINVAL);
+		return -EINVAL;
 
 	*val = (uint32_t)v;
-	return (0);
+	return 0;
 }
 
 static int
@@ -583,20 +583,20 @@  parse_flow_ttl(const char *str, uint32_t min, uint32_t max, uint32_t *val)
 	errno = 0;
 	v = strtoul(str, &end, 10);
 	if (errno != 0)
-		return (-EINVAL);
+		return -EINVAL;
 
 	if (*end != '\0') {
 		if (strncmp(frmt_sec, end, sizeof(frmt_sec)) == 0)
 			v *= MS_PER_S;
 		else if (strncmp(frmt_msec, end, sizeof (frmt_msec)) != 0)
-			return (-EINVAL);
+			return -EINVAL;
 	}
 
 	if (v < min || v > max)
-		return (-EINVAL);
+		return -EINVAL;
 
 	*val = (uint32_t)v;
-	return (0);
+	return 0;
 }
 
 static int
@@ -689,7 +689,7 @@  parse_args(int argc, char **argv)
 						optarg,
 						lgopts[option_index].name);
 					print_usage(prgname);
-					return (ret);
+					return ret;
 				}
 			}
 
@@ -702,7 +702,7 @@  parse_args(int argc, char **argv)
 						optarg,
 						lgopts[option_index].name);
 					print_usage(prgname);
-					return (ret);
+					return ret;
 				}
 			}
 
diff --git a/examples/ipv4_multicast/main.c b/examples/ipv4_multicast/main.c
index d4253c0..5dbea1a 100644
--- a/examples/ipv4_multicast/main.c
+++ b/examples/ipv4_multicast/main.c
@@ -225,7 +225,7 @@  bitcnt(uint32_t v)
 	for (n = 0; v != 0; v &= v - 1, n++)
 		;
 
-	return (n);
+	return n;
 }
 
 /**
@@ -278,13 +278,13 @@  mcast_out_pkt(struct rte_mbuf *pkt, int use_clone)
 
 	/* Create new mbuf for the header. */
 	if (unlikely ((hdr = rte_pktmbuf_alloc(header_pool)) == NULL))
-		return (NULL);
+		return NULL;
 
 	/* If requested, then make a new clone packet. */
 	if (use_clone != 0 &&
 	    unlikely ((pkt = rte_pktmbuf_clone(pkt, clone_pool)) == NULL)) {
 		rte_pktmbuf_free(hdr);
-		return (NULL);
+		return NULL;
 	}
 
 	/* prepend new header */
@@ -305,7 +305,7 @@  mcast_out_pkt(struct rte_mbuf *pkt, int use_clone)
 	hdr->ol_flags = pkt->ol_flags;
 
 	__rte_mbuf_sanity_check(hdr, 1);
-	return (hdr);
+	return hdr;
 }
 
 /*
@@ -509,7 +509,7 @@  parse_portmask(const char *portmask)
 	if ((portmask[0] == '\0') || (end == NULL) || (*end != '\0'))
 		return 0;
 
-	return ((uint32_t)pm);
+	return (uint32_t)pm;
 }
 
 static int
@@ -523,9 +523,9 @@  parse_nqueue(const char *q_arg)
 	n = strtoul(q_arg, &end, 0);
 	if (errno != 0 || end == NULL || *end != '\0' ||
 			n == 0 || n >= MAX_RX_QUEUE_PER_LCORE)
-		return (-1);
+		return -1;
 
-	return (n);
+	return n;
 }
 
 /* Parse the argument given in the command line of the application */
diff --git a/examples/l3fwd/main.c b/examples/l3fwd/main.c
index 5b0c2dd..41f9ce4 100644
--- a/examples/l3fwd/main.c
+++ b/examples/l3fwd/main.c
@@ -373,7 +373,7 @@  ipv4_hash_crc(const void *data, __rte_unused uint32_t data_len,
 	init_val = rte_jhash_1word(k->ip_dst, init_val);
 	init_val = rte_jhash_1word(*p, init_val);
 #endif /* RTE_MACHINE_CPUFLAG_SSE4_2 */
-	return (init_val);
+	return init_val;
 }
 
 static inline uint32_t
@@ -416,7 +416,7 @@  ipv6_hash_crc(const void *data, __rte_unused uint32_t data_len, uint32_t init_va
 	init_val = rte_jhash(k->ip_dst, sizeof(uint8_t) * IPV6_ADDR_LEN, init_val);
 	init_val = rte_jhash_1word(*p, init_val);
 #endif /* RTE_MACHINE_CPUFLAG_SSE4_2 */
-	return (init_val);
+	return init_val;
 }
 
 #define IPV4_L3FWD_NUM_ROUTES \
diff --git a/examples/multi_process/symmetric_mp/main.c b/examples/multi_process/symmetric_mp/main.c
index 931c94f..72bad54 100644
--- a/examples/multi_process/symmetric_mp/main.c
+++ b/examples/multi_process/symmetric_mp/main.c
@@ -196,7 +196,7 @@  smp_parse_args(int argc, char **argv)
 	ret = optind-1;
 	optind = 0; /* reset getopt lib */
 
-	return (ret);
+	return ret;
 }
 
 /*
diff --git a/examples/netmap_compat/bridge/bridge.c b/examples/netmap_compat/bridge/bridge.c
index 5adcf61..53f5fdb 100644
--- a/examples/netmap_compat/bridge/bridge.c
+++ b/examples/netmap_compat/bridge/bridge.c
@@ -215,7 +215,7 @@  netmap_port_open(uint32_t idx)
 	err = rte_netmap_ioctl(port->fd, NIOCGINFO, &req);
 	if (err) {
 		printf("[E] NIOCGINFO ioctl failed (error %d)\n", err);
-		return (err);
+		return err;
 	}
 
 	snprintf(req.nr_name, sizeof(req.nr_name), "%s", port->str);
@@ -225,7 +225,7 @@  netmap_port_open(uint32_t idx)
 	err = rte_netmap_ioctl(port->fd, NIOCREGIF, &req);
 	if (err) {
 		printf("[E] NIOCREGIF ioctl failed (error %d)\n", err);
-		return (err);
+		return err;
 	}
 
 	/* mmap only once. */
@@ -235,7 +235,7 @@  netmap_port_open(uint32_t idx)
 
 	if (ports.mem == MAP_FAILED) {
 		printf("[E] NETMAP mmap failed for fd: %d)\n", port->fd);
-		return (-ENOMEM);
+		return -ENOMEM;
 	}
 
 	port->nmif = NETMAP_IF(ports.mem, req.nr_offset);
@@ -243,7 +243,7 @@  netmap_port_open(uint32_t idx)
 	port->tx_ring = NETMAP_TXRING(port->nmif, 0);
 	port->rx_ring = NETMAP_RXRING(port->nmif, 0);
 
-	return (0);
+	return 0;
 }
 
 
diff --git a/examples/netmap_compat/lib/compat_netmap.c b/examples/netmap_compat/lib/compat_netmap.c
index dd6d4f9..bf1b418 100644
--- a/examples/netmap_compat/lib/compat_netmap.c
+++ b/examples/netmap_compat/lib/compat_netmap.c
@@ -138,10 +138,10 @@  ifname_to_portid(const char *ifname, uint8_t *port)
 	portid = strtoul(ifname, &endptr, 10);
 	if (endptr == ifname || *endptr != '\0' ||
 			portid >= RTE_DIM(ports) || errno != 0)
-		return (-EINVAL);
+		return -EINVAL;
 
 	*port = (uint8_t)portid;
-	return (0);
+	return 0;
 }
 
 /**
@@ -196,10 +196,10 @@  fd_reserve(void)
 		;
 
 	if (i == RTE_DIM(fd_port))
-		return (-ENOMEM);
+		return -ENOMEM;
 
 	fd_port[i].port = FD_PORT_RSRV;
-	return (IDX_TO_FD(i));
+	return IDX_TO_FD(i);
 }
 
 static int32_t
@@ -210,7 +210,7 @@  fd_release(int32_t fd)
 	idx = FD_TO_IDX(fd);
 
 	if (!FD_VALID(fd) || (port = fd_port[idx].port) == FD_PORT_FREE)
-		return (-EINVAL);
+		return -EINVAL;
 
 	/* if we still have a valid port attached, release the port */
 	if (port < RTE_DIM(ports) && ports[port].fd == idx) {
@@ -218,7 +218,7 @@  fd_release(int32_t fd)
 	}
 
 	fd_port[idx].port = FD_PORT_FREE;
-	return (0);
+	return 0;
 }
 
 static int
@@ -228,26 +228,26 @@  check_nmreq(struct nmreq *req, uint8_t *port)
 	uint8_t portid;
 
 	if (req == NULL)
-		return (-EINVAL);
+		return -EINVAL;
 
 	if (req->nr_version != NETMAP_API) {
 		req->nr_version = NETMAP_API;
-		return (-EINVAL);
+		return -EINVAL;
 	}
 
 	if ((rc = ifname_to_portid(req->nr_name, &portid)) != 0) {
 	    	RTE_LOG(ERR, USER1, "Invalid interface name:\"%s\" "
 			"in NIOCGINFO call\n", req->nr_name);
-		return (rc);
+		return rc;
 	}
 
 	if (ports[portid].pool == NULL) {
 	    	RTE_LOG(ERR, USER1, "Misconfigured portid %hhu\n", portid);
-		return (-EINVAL);
+		return -EINVAL;
 	}
 
 	*port = portid;
-	return (0);
+	return 0;
 }
 
 /**
@@ -268,7 +268,7 @@  ioctl_niocginfo(__rte_unused int fd, void * param)
 
 	req = (struct nmreq *)param;
 	if ((rc = check_nmreq(req, &portid)) != 0)
-		return (rc);
+		return rc;
 
 	req->nr_tx_rings = (uint16_t)(ports[portid].nr_tx_rings - 1);
 	req->nr_rx_rings = (uint16_t)(ports[portid].nr_rx_rings - 1);
@@ -279,7 +279,7 @@  ioctl_niocginfo(__rte_unused int fd, void * param)
 	req->nr_memsize = netmap.mem_sz;
 	req->nr_offset = 0;
 
-	return (0);
+	return 0;
 }
 
 static void
@@ -315,12 +315,12 @@  netmap_regif(struct nmreq *req, uint32_t idx, uint8_t port)
 	if (ports[port].fd < RTE_DIM(fd_port)) {
 	    	RTE_LOG(ERR, USER1, "port %hhu already in use by fd: %u\n",
 			port, IDX_TO_FD(ports[port].fd));
-		return (-EBUSY);
+		return -EBUSY;
 	}
 	if (fd_port[idx].port != FD_PORT_RSRV) {
 	    	RTE_LOG(ERR, USER1, "fd: %u is misconfigured\n",
 			IDX_TO_FD(idx));
-		return (-EBUSY);
+		return -EBUSY;
 	}
 
 	nmif = ports[port].nmif;
@@ -330,7 +330,7 @@  netmap_regif(struct nmreq *req, uint32_t idx, uint8_t port)
 
 	/* only ALL rings supported right now. */
 	if (req->nr_ringid != 0)
-		return (-EINVAL);
+		return -EINVAL;
 
 	snprintf(nmif->ni_name, sizeof(nmif->ni_name), "%s", req->nr_name);
 	nmif->ni_version  = req->nr_version;
@@ -380,7 +380,7 @@  netmap_regif(struct nmreq *req, uint32_t idx, uint8_t port)
 		RTE_LOG(ERR, USER1,
 			"Couldn't start ethernet device %s (error %d)\n",
 			req->nr_name, rc);
-	    return (rc);
+	    return rc;
 	}
 
 	/* setup fdi <--> port relationtip. */
@@ -390,7 +390,7 @@  netmap_regif(struct nmreq *req, uint32_t idx, uint8_t port)
 	req->nr_memsize = netmap.mem_sz;
 	req->nr_offset = (uintptr_t)nmif - (uintptr_t)netmap.mem;
 
-	return (0);
+	return 0;
 }
 
 /**
@@ -406,7 +406,7 @@  ioctl_niocregif(int32_t fd, void * param)
 
 	req = (struct nmreq *)param;
 	if ((rc = check_nmreq(req, &portid)) != 0)
-		return (rc);
+		return rc;
 
 	idx = FD_TO_IDX(fd);
 
@@ -414,7 +414,7 @@  ioctl_niocregif(int32_t fd, void * param)
 	rc = netmap_regif(req, idx, portid);
 	rte_spinlock_unlock(&netmap_lock);
 
-	return (rc);
+	return rc;
 }
 
 static void
@@ -452,7 +452,7 @@  ioctl_niocunregif(int fd)
 	}
 
 	rte_spinlock_unlock(&netmap_lock);
-	return (rc);
+	return rc;
 }
 
 /**
@@ -517,7 +517,7 @@  rx_sync_if(uint32_t port)
 		rc += r->avail;
 	}
 
-	return (rc);
+	return rc;
 }
 
 /**
@@ -531,9 +531,9 @@  ioctl_niocrxsync(int fd)
 	idx = FD_TO_IDX(fd);
 	if ((port = fd_port[idx].port) < RTE_DIM(ports) &&
 			ports[port].fd == idx) {
-		return (rx_sync_if(fd_port[idx].port));
+		return rx_sync_if(fd_port[idx].port);
 	} else  {
-		return (-EINVAL);
+		return -EINVAL;
 	}
 }
 
@@ -612,7 +612,7 @@  tx_sync_if(uint32_t port)
 		rc += r->avail;
 	}
 
-	return (rc);
+	return rc;
 }
 
 /**
@@ -626,9 +626,9 @@  ioctl_nioctxsync(int fd)
 	idx = FD_TO_IDX(fd);
 	if ((port = fd_port[idx].port) < RTE_DIM(ports) &&
 			ports[port].fd == idx) {
-		return (tx_sync_if(fd_port[idx].port));
+		return tx_sync_if(fd_port[idx].port);
 	} else  {
-		return (-EINVAL);
+		return -EINVAL;
 	}
 }
 
@@ -659,7 +659,7 @@  rte_netmap_init(const struct rte_netmap_conf *conf)
 			RTE_CACHE_LINE_SIZE, conf->socket_id)) == NULL) {
 		RTE_LOG(ERR, USER1, "%s: failed to allocate %zu bytes\n",
 			__func__, sz);
-		return (-ENOMEM);
+		return -ENOMEM;
 	}
 
 	netmap.mem_sz = sz;
@@ -681,7 +681,7 @@  rte_netmap_init(const struct rte_netmap_conf *conf)
 		fd_port[i].port = FD_PORT_FREE;
 	}
 
-	return (0);
+	return 0;
 }
 
 
@@ -698,7 +698,7 @@  rte_netmap_init_port(uint8_t portid, const struct rte_netmap_port_conf *conf)
 			conf->nr_rx_rings > netmap.conf.max_rings) {
 		RTE_LOG(ERR, USER1, "%s(%hhu): invalid parameters\n",
 			__func__, portid);
-		return (-EINVAL);
+		return -EINVAL;
 	}
 
 		rx_slots = (uint16_t)rte_align32pow2(conf->nr_rx_slots);
@@ -708,7 +708,7 @@  rte_netmap_init_port(uint8_t portid, const struct rte_netmap_port_conf *conf)
 			rx_slots > netmap.conf.max_slots) {
 		RTE_LOG(ERR, USER1, "%s(%hhu): invalid parameters\n",
 			__func__, portid);
-		return (-EINVAL);
+		return -EINVAL;
 	}
 
 	ret = rte_eth_dev_configure(portid, conf->nr_rx_rings,
@@ -716,7 +716,7 @@  rte_netmap_init_port(uint8_t portid, const struct rte_netmap_port_conf *conf)
 
 	if (ret < 0) {
 	    RTE_LOG(ERR, USER1, "Couldn't configure port %hhu\n", portid);
-	    return (ret);
+	    return ret;
 	}
 
 	for (i = 0; i < conf->nr_tx_rings; i++) {
@@ -728,7 +728,7 @@  rte_netmap_init_port(uint8_t portid, const struct rte_netmap_port_conf *conf)
 				"Couldn't configure TX queue %"PRIu16" of "
 				"port %"PRIu8"\n",
 				i, portid);
-			return (ret);
+			return ret;
 		}
 
 		ret = rte_eth_rx_queue_setup(portid, i, rx_slots,
@@ -739,7 +739,7 @@  rte_netmap_init_port(uint8_t portid, const struct rte_netmap_port_conf *conf)
 				"Couldn't configure RX queue %"PRIu16" of "
 				"port %"PRIu8"\n",
 				i, portid);
-			return (ret);
+			return ret;
 		}
 	}
 
@@ -754,7 +754,7 @@  rte_netmap_init_port(uint8_t portid, const struct rte_netmap_port_conf *conf)
 	ports[portid].tx_burst = conf->tx_burst;
 	ports[portid].rx_burst = conf->rx_burst;
 
-	return (0);
+	return 0;
 }
 
 int
@@ -770,7 +770,7 @@  rte_netmap_close(__rte_unused int fd)
 		errno =-rc;
 		rc = -1;
 	}
-	return (rc);
+	return rc;
 }
 
 int rte_netmap_ioctl(int fd, uint32_t op, void *param)
@@ -779,7 +779,7 @@  int rte_netmap_ioctl(int fd, uint32_t op, void *param)
 
 	if (!FD_VALID(fd)) {
 	    errno = EBADF;
-	    return (-1);
+	    return -1;
 	}
 
 	switch (op) {
@@ -815,7 +815,7 @@  int rte_netmap_ioctl(int fd, uint32_t op, void *param)
 		ret = 0;
 	}
 
-	return (ret);
+	return ret;
 }
 
 void *
@@ -829,7 +829,7 @@  rte_netmap_mmap(void *addr, size_t length,
 			((flags & MAP_FIXED) != 0 && addr != NULL)) {
 
 		errno = EINVAL;
-		return (MAP_FAILED);
+		return MAP_FAILED;
 	}
 
 	return (void *)((uintptr_t)netmap.mem + (uintptr_t)offset);
@@ -852,7 +852,7 @@  rte_netmap_open(__rte_unused const char *pathname, __rte_unused int flags)
 		errno = -fd;
 		fd = -1;
 	}
-	return (fd);
+	return fd;
 }
 
 /**
diff --git a/examples/qos_sched/args.c b/examples/qos_sched/args.c
index 0272837..3e7fd08 100644
--- a/examples/qos_sched/args.c
+++ b/examples/qos_sched/args.c
@@ -112,7 +112,7 @@  app_usage(const char *prgname)
 
 static inline int str_is(const char *str, const char *is)
 {
-	return (strcmp(str, is) == 0);
+	return strcmp(str, is) == 0;
 }
 
 /* returns core mask used by DPDK */
diff --git a/examples/quota_watermark/qw/main.h b/examples/quota_watermark/qw/main.h
index 79d3c26..6b36489 100644
--- a/examples/quota_watermark/qw/main.h
+++ b/examples/quota_watermark/qw/main.h
@@ -53,7 +53,7 @@  extern struct rte_mempool *mbuf_pool;
 static inline int
 is_bit_set(int i, unsigned int mask)
 {
-    return ((1 << i) & mask);
+    return (1 << i) & mask;
 }
 
 #endif /* _MAIN_H_ */
diff --git a/examples/vhost/main.c b/examples/vhost/main.c
index 2dcdacb..73564f0 100644
--- a/examples/vhost/main.c
+++ b/examples/vhost/main.c
@@ -911,7 +911,7 @@  gpa_to_hpa(struct vhost_dev  *vdev, uint64_t guest_pa,
 static inline int __attribute__((always_inline))
 ether_addr_cmp(struct ether_addr *ea, struct ether_addr *eb)
 {
-	return (((*(uint64_t *)ea ^ *(uint64_t *)eb) & MAC_ADDR_CMP) == 0);
+	return ((*(uint64_t *)ea ^ *(uint64_t *)eb) & MAC_ADDR_CMP) == 0;
 }
 
 /*
@@ -2281,7 +2281,7 @@  alloc_data_ll(uint32_t size)
 	}
 	ll_new[i].next = NULL;
 
-	return (ll_new);
+	return ll_new;
 }
 
 /*
diff --git a/examples/vhost_xen/main.c b/examples/vhost_xen/main.c
index 096e955..c4461a8 100644
--- a/examples/vhost_xen/main.c
+++ b/examples/vhost_xen/main.c
@@ -1184,7 +1184,7 @@  alloc_data_ll(uint32_t size)
 	}
 	ll_new[i].next = NULL;
 
-	return (ll_new);
+	return ll_new;
 }
 
 /*
diff --git a/examples/vhost_xen/vhost_monitor.c b/examples/vhost_xen/vhost_monitor.c
index a891c56..2b24368 100644
--- a/examples/vhost_xen/vhost_monitor.c
+++ b/examples/vhost_xen/vhost_monitor.c
@@ -97,14 +97,14 @@  init_watch(void)
 	xs = xs_daemon_open();
 	if (xs == NULL) {
 		RTE_LOG(ERR, XENHOST, "xs_daemon_open failed\n");
-		return (-1);
+		return -1;
 	}
 
 	ret = xs_watch(xs, "/local/domain", "mytoken");
 	if (ret == 0) {
 		RTE_LOG(ERR, XENHOST, "%s: xs_watch failed\n", __func__);
 		xs_daemon_close(xs);
-		return (-1);
+		return -1;
 	}
 
 	/* We are notified of read availability on the watch via the file descriptor. */
@@ -126,7 +126,7 @@  get_xen_guest(int dom_id)
 			return guest;
 	}
 
-	return (NULL);
+	return NULL;
 }
 
 
diff --git a/lib/librte_acl/acl_run_neon.h b/lib/librte_acl/acl_run_neon.h
index cf7c57f..d233ff0 100644
--- a/lib/librte_acl/acl_run_neon.h
+++ b/lib/librte_acl/acl_run_neon.h
@@ -102,7 +102,7 @@  resolve_priority_neon(uint64_t transition, int n, const struct rte_acl_ctx *ctx,
 static inline __attribute__((always_inline)) uint32_t
 check_any_match_x4(uint64_t val[])
 {
-	return ((val[0] | val[1] | val[2] | val[3]) & RTE_ACL_NODE_MATCH);
+	return (val[0] | val[1] | val[2] | val[3]) & RTE_ACL_NODE_MATCH;
 }
 
 static inline __attribute__((always_inline)) void
diff --git a/lib/librte_cryptodev/rte_cryptodev.c b/lib/librte_cryptodev/rte_cryptodev.c
index f09f67e..ea462db 100644
--- a/lib/librte_cryptodev/rte_cryptodev.c
+++ b/lib/librte_cryptodev/rte_cryptodev.c
@@ -474,7 +474,7 @@  rte_cryptodev_queue_pairs_config(struct rte_cryptodev *dev, uint16_t nb_qpairs,
 	if (nb_qpairs > (dev_info.max_nb_queue_pairs)) {
 		CDEV_LOG_ERR("Invalid num queue_pairs (%u) for dev %u",
 				nb_qpairs, dev->data->dev_id);
-	    return (-EINVAL);
+	    return -EINVAL;
 	}
 
 	if (dev->data->queue_pairs == NULL) { /* first time configuration */
@@ -601,7 +601,7 @@  rte_cryptodev_configure(uint8_t dev_id, struct rte_cryptodev_config *config)
 
 	if (!rte_cryptodev_pmd_is_valid_dev(dev_id)) {
 		CDEV_LOG_ERR("Invalid dev_id=%" PRIu8, dev_id);
-		return (-EINVAL);
+		return -EINVAL;
 	}
 
 	dev = &rte_crypto_devices[dev_id];
@@ -609,7 +609,7 @@  rte_cryptodev_configure(uint8_t dev_id, struct rte_cryptodev_config *config)
 	if (dev->data->dev_started) {
 		CDEV_LOG_ERR(
 		    "device %d must be stopped to allow configuration", dev_id);
-		return (-EBUSY);
+		return -EBUSY;
 	}
 
 	/* Setup new number of queue pairs and reconfigure device. */
@@ -643,7 +643,7 @@  rte_cryptodev_start(uint8_t dev_id)
 
 	if (!rte_cryptodev_pmd_is_valid_dev(dev_id)) {
 		CDEV_LOG_ERR("Invalid dev_id=%" PRIu8, dev_id);
-		return (-EINVAL);
+		return -EINVAL;
 	}
 
 	dev = &rte_crypto_devices[dev_id];
@@ -755,13 +755,13 @@  rte_cryptodev_queue_pair_setup(uint8_t dev_id, uint16_t queue_pair_id,
 
 	if (!rte_cryptodev_pmd_is_valid_dev(dev_id)) {
 		CDEV_LOG_ERR("Invalid dev_id=%" PRIu8, dev_id);
-		return (-EINVAL);
+		return -EINVAL;
 	}
 
 	dev = &rte_crypto_devices[dev_id];
 	if (queue_pair_id >= dev->data->nb_queue_pairs) {
 		CDEV_LOG_ERR("Invalid queue_pair_id=%d", queue_pair_id);
-		return (-EINVAL);
+		return -EINVAL;
 	}
 
 	if (dev->data->dev_started) {
@@ -784,7 +784,7 @@  rte_cryptodev_stats_get(uint8_t dev_id, struct rte_cryptodev_stats *stats)
 
 	if (!rte_cryptodev_pmd_is_valid_dev(dev_id)) {
 		CDEV_LOG_ERR("Invalid dev_id=%d", dev_id);
-		return (-ENODEV);
+		return -ENODEV;
 	}
 
 	if (stats == NULL) {
@@ -849,11 +849,11 @@  rte_cryptodev_callback_register(uint8_t dev_id,
 	struct rte_cryptodev_callback *user_cb;
 
 	if (!cb_fn)
-		return (-EINVAL);
+		return -EINVAL;
 
 	if (!rte_cryptodev_pmd_is_valid_dev(dev_id)) {
 		CDEV_LOG_ERR("Invalid dev_id=%" PRIu8, dev_id);
-		return (-EINVAL);
+		return -EINVAL;
 	}
 
 	dev = &rte_crypto_devices[dev_id];
@@ -893,11 +893,11 @@  rte_cryptodev_callback_unregister(uint8_t dev_id,
 	struct rte_cryptodev_callback *cb, *next;
 
 	if (!cb_fn)
-		return (-EINVAL);
+		return -EINVAL;
 
 	if (!rte_cryptodev_pmd_is_valid_dev(dev_id)) {
 		CDEV_LOG_ERR("Invalid dev_id=%" PRIu8, dev_id);
-		return (-EINVAL);
+		return -EINVAL;
 	}
 
 	dev = &rte_crypto_devices[dev_id];
diff --git a/lib/librte_eal/common/eal_common_memzone.c b/lib/librte_eal/common/eal_common_memzone.c
index febc56b..711c845 100644
--- a/lib/librte_eal/common/eal_common_memzone.c
+++ b/lib/librte_eal/common/eal_common_memzone.c
@@ -119,7 +119,7 @@  find_heap_max_free_elem(int *s, unsigned align)
 		}
 	}
 
-	return (len - MALLOC_ELEM_OVERHEAD - align);
+	return len - MALLOC_ELEM_OVERHEAD - align;
 }
 
 static const struct rte_memzone *
diff --git a/lib/librte_eal/common/include/arch/ppc_64/rte_byteorder.h b/lib/librte_eal/common/include/arch/ppc_64/rte_byteorder.h
index 80436f2..6af532a 100644
--- a/lib/librte_eal/common/include/arch/ppc_64/rte_byteorder.h
+++ b/lib/librte_eal/common/include/arch/ppc_64/rte_byteorder.h
@@ -51,7 +51,7 @@  extern "C" {
  */
 static inline uint16_t rte_arch_bswap16(uint16_t _x)
 {
-	return ((_x >> 8) | ((_x << 8) & 0xff00));
+	return (_x >> 8) | ((_x << 8) & 0xff00);
 }
 
 /*
diff --git a/lib/librte_eal/common/malloc_heap.c b/lib/librte_eal/common/malloc_heap.c
index d170d03..763fa32 100644
--- a/lib/librte_eal/common/malloc_heap.c
+++ b/lib/librte_eal/common/malloc_heap.c
@@ -87,7 +87,7 @@  check_hugepage_sz(unsigned flags, uint64_t hugepage_sz)
 		check_flag = RTE_MEMZONE_16GB;
 	}
 
-	return (check_flag & flags);
+	return check_flag & flags;
 }
 
 /*
diff --git a/lib/librte_eal/linuxapp/eal/eal_xen_memory.c b/lib/librte_eal/linuxapp/eal/eal_xen_memory.c
index 7fd9e83..495eef9 100644
--- a/lib/librte_eal/linuxapp/eal/eal_xen_memory.c
+++ b/lib/librte_eal/linuxapp/eal/eal_xen_memory.c
@@ -171,7 +171,7 @@  rte_xen_mem_phy2mch(uint32_t memseg_id, const phys_addr_t phy_addr)
 	mfn = mfn_offset + memseg[memseg_id].mfn[mfn_id];
 
 	/** return mechine address */
-	return (mfn * PAGE_SIZE + phy_addr % PAGE_SIZE);
+	return mfn * PAGE_SIZE + phy_addr % PAGE_SIZE;
 }
 
 int
diff --git a/lib/librte_eal/linuxapp/kni/kni_vhost.c b/lib/librte_eal/linuxapp/kni/kni_vhost.c
index d0c12a6..6f2a961 100644
--- a/lib/librte_eal/linuxapp/kni/kni_vhost.c
+++ b/lib/librte_eal/linuxapp/kni/kni_vhost.c
@@ -439,7 +439,7 @@  kni_sock_rcvmsg(struct socket *sock,
 	KNI_DBG_RX("kni_rcvmsg expect_len %ld, flags 0x%08x, pkt_len %d\n",
 		   (unsigned long)len, q->flags, pkt_len);
 
-	return (pkt_len + vnet_hdr_len);
+	return pkt_len + vnet_hdr_len;
 }
 
 /* dummy tap like ioctl */
diff --git a/lib/librte_ether/rte_ether.h b/lib/librte_ether/rte_ether.h
index 07c17d7..1d62d8e 100644
--- a/lib/librte_ether/rte_ether.h
+++ b/lib/librte_ether/rte_ether.h
@@ -145,7 +145,7 @@  static inline int is_zero_ether_addr(const struct ether_addr *ea)
  */
 static inline int is_unicast_ether_addr(const struct ether_addr *ea)
 {
-	return ((ea->addr_bytes[0] & ETHER_GROUP_ADDR) == 0);
+	return (ea->addr_bytes[0] & ETHER_GROUP_ADDR) == 0;
 }
 
 /**
@@ -160,7 +160,7 @@  static inline int is_unicast_ether_addr(const struct ether_addr *ea)
  */
 static inline int is_multicast_ether_addr(const struct ether_addr *ea)
 {
-	return (ea->addr_bytes[0] & ETHER_GROUP_ADDR);
+	return ea->addr_bytes[0] & ETHER_GROUP_ADDR;
 }
 
 /**
@@ -193,7 +193,7 @@  static inline int is_broadcast_ether_addr(const struct ether_addr *ea)
  */
 static inline int is_universal_ether_addr(const struct ether_addr *ea)
 {
-	return ((ea->addr_bytes[0] & ETHER_LOCAL_ADMIN_ADDR) == 0);
+	return (ea->addr_bytes[0] & ETHER_LOCAL_ADMIN_ADDR) == 0;
 }
 
 /**
@@ -208,7 +208,7 @@  static inline int is_universal_ether_addr(const struct ether_addr *ea)
  */
 static inline int is_local_admin_ether_addr(const struct ether_addr *ea)
 {
-	return ((ea->addr_bytes[0] & ETHER_LOCAL_ADMIN_ADDR) != 0);
+	return (ea->addr_bytes[0] & ETHER_LOCAL_ADMIN_ADDR) != 0;
 }
 
 /**
@@ -224,7 +224,7 @@  static inline int is_local_admin_ether_addr(const struct ether_addr *ea)
  */
 static inline int is_valid_assigned_ether_addr(const struct ether_addr *ea)
 {
-	return (is_unicast_ether_addr(ea) && (! is_zero_ether_addr(ea)));
+	return is_unicast_ether_addr(ea) && (! is_zero_ether_addr(ea));
 }
 
 /**
diff --git a/lib/librte_hash/rte_cuckoo_hash.c b/lib/librte_hash/rte_cuckoo_hash.c
index 3e3167c..71b5b76 100644
--- a/lib/librte_hash/rte_cuckoo_hash.c
+++ b/lib/librte_hash/rte_cuckoo_hash.c
@@ -425,7 +425,7 @@  rte_hash_secondary_hash(const hash_sig_t primary_hash)
 
 	uint32_t tag = primary_hash >> all_bits_shift;
 
-	return (primary_hash ^ ((tag + 1) * alt_bits_xor));
+	return primary_hash ^ ((tag + 1) * alt_bits_xor);
 }
 
 void
@@ -603,7 +603,7 @@  __rte_hash_add_key_with_hash(const struct rte_hash *h, const void *key,
 				 * Return index where key is stored,
 				 * substracting the first dummy index
 				 */
-				return (prim_bkt->key_idx[i] - 1);
+				return prim_bkt->key_idx[i] - 1;
 			}
 		}
 	}
@@ -623,7 +623,7 @@  __rte_hash_add_key_with_hash(const struct rte_hash *h, const void *key,
 				 * Return index where key is stored,
 				 * substracting the first dummy index
 				 */
-				return (sec_bkt->key_idx[i] - 1);
+				return sec_bkt->key_idx[i] - 1;
 			}
 		}
 	}
@@ -655,7 +655,7 @@  __rte_hash_add_key_with_hash(const struct rte_hash *h, const void *key,
 		prim_bkt->signatures[ret].current = sig;
 		prim_bkt->signatures[ret].alt = alt_hash;
 		prim_bkt->key_idx[ret] = new_idx;
-		return (new_idx - 1);
+		return new_idx - 1;
 	}
 
 	/* Error in addition, store new slot back in the ring and return error */
@@ -732,7 +732,7 @@  __rte_hash_lookup_with_hash(const struct rte_hash *h, const void *key,
 				 * Return index where key is stored,
 				 * substracting the first dummy index
 				 */
-				return (bkt->key_idx[i] - 1);
+				return bkt->key_idx[i] - 1;
 			}
 		}
 	}
@@ -755,7 +755,7 @@  __rte_hash_lookup_with_hash(const struct rte_hash *h, const void *key,
 				 * Return index where key is stored,
 				 * substracting the first dummy index
 				 */
-				return (bkt->key_idx[i] - 1);
+				return bkt->key_idx[i] - 1;
 			}
 		}
 	}
@@ -847,7 +847,7 @@  __rte_hash_del_key_with_hash(const struct rte_hash *h, const void *key,
 				 * Return index where key is stored,
 				 * substracting the first dummy index
 				 */
-				return (bkt->key_idx[i] - 1);
+				return bkt->key_idx[i] - 1;
 			}
 		}
 	}
@@ -870,7 +870,7 @@  __rte_hash_del_key_with_hash(const struct rte_hash *h, const void *key,
 				 * Return index where key is stored,
 				 * substracting the first dummy index
 				 */
-				return (bkt->key_idx[i] - 1);
+				return bkt->key_idx[i] - 1;
 			}
 		}
 	}
@@ -1239,5 +1239,5 @@  rte_hash_iterate(const struct rte_hash *h, const void **key, void **data, uint32
 	/* Increment iterator */
 	(*next)++;
 
-	return (position - 1);
+	return position - 1;
 }
diff --git a/lib/librte_ip_frag/ip_frag_internal.c b/lib/librte_ip_frag/ip_frag_internal.c
index 3d36b7d..b679ff4 100644
--- a/lib/librte_ip_frag/ip_frag_internal.c
+++ b/lib/librte_ip_frag/ip_frag_internal.c
@@ -379,7 +379,7 @@  ip_frag_lookup(struct rte_ip_frag_tbl *tbl,
 			IPv6_KEY_BYTES(p1[i].key.src_dst), p1[i].key.id, p1[i].start);
 
 		if (ip_frag_key_cmp(key, &p1[i].key) == 0)
-			return (p1 + i);
+			return p1 + i;
 		else if (ip_frag_key_is_empty(&p1[i].key))
 			empty = (empty == NULL) ? (p1 + i) : empty;
 		else if (max_cycles + p1[i].start < tms)
@@ -405,7 +405,7 @@  ip_frag_lookup(struct rte_ip_frag_tbl *tbl,
 			IPv6_KEY_BYTES(p2[i].key.src_dst), p2[i].key.id, p2[i].start);
 
 		if (ip_frag_key_cmp(key, &p2[i].key) == 0)
-			return (p2 + i);
+			return p2 + i;
 		else if (ip_frag_key_is_empty(&p2[i].key))
 			empty = (empty == NULL) ?( p2 + i) : empty;
 		else if (max_cycles + p2[i].start < tms)
diff --git a/lib/librte_lpm/rte_lpm.c b/lib/librte_lpm/rte_lpm.c
index 3981452..cfdf959 100644
--- a/lib/librte_lpm/rte_lpm.c
+++ b/lib/librte_lpm/rte_lpm.c
@@ -113,7 +113,7 @@  depth_to_range(uint8_t depth)
 		return 1 << (MAX_DEPTH_TBL24 - depth);
 
 	/* Else if depth is greater than 24 */
-	return (1 << (RTE_LPM_MAX_DEPTH - depth));
+	return 1 << (RTE_LPM_MAX_DEPTH - depth);
 }
 
 /*
diff --git a/lib/librte_mempool/rte_mempool.h b/lib/librte_mempool/rte_mempool.h
index 6e2390a..9745bf0 100644
--- a/lib/librte_mempool/rte_mempool.h
+++ b/lib/librte_mempool/rte_mempool.h
@@ -1260,7 +1260,7 @@  rte_mempool_virt2phy(const struct rte_mempool *mp, const void *elt)
 		uintptr_t off;
 
 		off = (const char *)elt - (const char *)mp->elt_va_start;
-		return (mp->elt_pa[off >> mp->pg_shift] + (off & mp->pg_mask));
+		return mp->elt_pa[off >> mp->pg_shift] + (off & mp->pg_mask);
 	} else {
 		/*
 		 * If huge pages are disabled, we cannot assume the
diff --git a/lib/librte_ring/rte_ring.h b/lib/librte_ring/rte_ring.h
index de036ce..943c97c 100644
--- a/lib/librte_ring/rte_ring.h
+++ b/lib/librte_ring/rte_ring.h
@@ -1037,7 +1037,7 @@  rte_ring_full(const struct rte_ring *r)
 {
 	uint32_t prod_tail = r->prod.tail;
 	uint32_t cons_tail = r->cons.tail;
-	return (((cons_tail - prod_tail - 1) & r->prod.mask) == 0);
+	return ((cons_tail - prod_tail - 1) & r->prod.mask) == 0;
 }
 
 /**
@@ -1070,7 +1070,7 @@  rte_ring_count(const struct rte_ring *r)
 {
 	uint32_t prod_tail = r->prod.tail;
 	uint32_t cons_tail = r->cons.tail;
-	return ((prod_tail - cons_tail) & r->prod.mask);
+	return (prod_tail - cons_tail) & r->prod.mask;
 }
 
 /**
@@ -1086,7 +1086,7 @@  rte_ring_free_count(const struct rte_ring *r)
 {
 	uint32_t prod_tail = r->prod.tail;
 	uint32_t cons_tail = r->cons.tail;
-	return ((cons_tail - prod_tail - 1) & r->prod.mask);
+	return (cons_tail - prod_tail - 1) & r->prod.mask;
 }
 
 /**
diff --git a/lib/librte_sched/rte_bitmap.h b/lib/librte_sched/rte_bitmap.h
index 3d911e4..ea4a5f8 100644
--- a/lib/librte_sched/rte_bitmap.h
+++ b/lib/librte_sched/rte_bitmap.h
@@ -115,7 +115,7 @@  __rte_bitmap_index1_inc(struct rte_bitmap *bmp)
 static inline uint64_t
 __rte_bitmap_mask1_get(struct rte_bitmap *bmp)
 {
-	return ((~1lu) << bmp->offset1);
+	return (~1lu) << bmp->offset1;
 }
 
 static inline void
@@ -344,7 +344,7 @@  rte_bitmap_get(struct rte_bitmap *bmp, uint32_t pos)
 	index2 = pos >> RTE_BITMAP_SLAB_BIT_SIZE_LOG2;
 	offset2 = pos & RTE_BITMAP_SLAB_BIT_MASK;
 	slab2 = bmp->array2 + index2;
-	return ((*slab2) & (1lu << offset2));
+	return (*slab2) & (1lu << offset2);
 }
 
 /**
@@ -412,7 +412,7 @@  __rte_bitmap_line_not_empty(uint64_t *slab2)
 	v1 |= v2;
 	v3 |= v4;
 
-	return (v1 | v3);
+	return v1 | v3;
 }
 
 /**
diff --git a/lib/librte_sched/rte_red.h b/lib/librte_sched/rte_red.h
index 78af4e7..7f9ac90 100644
--- a/lib/librte_sched/rte_red.h
+++ b/lib/librte_sched/rte_red.h
@@ -163,7 +163,7 @@  static inline uint32_t
 rte_fast_rand(void)
 {
 	rte_red_rand_seed = (214013 * rte_red_rand_seed) + 2531011;
-	return (rte_red_rand_seed >> 10);
+	return rte_red_rand_seed >> 10;
 }
 
 /**
diff --git a/lib/librte_sched/rte_sched.c b/lib/librte_sched/rte_sched.c
index 6f92aa6..513e893 100644
--- a/lib/librte_sched/rte_sched.c
+++ b/lib/librte_sched/rte_sched.c
@@ -457,7 +457,7 @@  rte_sched_port_get_memory_footprint(struct rte_sched_port_params *params)
 	size0 = sizeof(struct rte_sched_port);
 	size1 = rte_sched_port_get_array_base(params, e_RTE_SCHED_PORT_ARRAY_TOTAL);
 
-	return (size0 + size1);
+	return size0 + size1;
 }
 
 static void
@@ -1057,7 +1057,7 @@  rte_sched_port_queue_is_empty(struct rte_sched_port *port, uint32_t qindex)
 {
 	struct rte_sched_queue *queue = port->queue + qindex;
 
-	return (queue->qr == queue->qw);
+	return queue->qr == queue->qw;
 }
 
 #endif /* RTE_SCHED_DEBUG */