diff mbox

[dpdk-dev,v2] ixgbe: fix access to last byte of EEPROM

Message ID 1442480744-3393-1-git-send-email-remy.horton@intel.com (mailing list archive)
State Superseded, archived
Headers

Commit Message

Remy Horton Sept. 17, 2015, 9:05 a.m. UTC 
  Incorrect operator in ixgbe_get_eeprom & ixgbe_set_eeprom prevents
last byte of EEPROM being read/written, and hence cannot be dumped
or updated in entirity using these functions.

Signed-off-by: Remy Horton <remy.horton@intel.com>
---
 drivers/net/ixgbe/ixgbe_ethdev.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

Comments

Thomas Monjalon Sept. 17, 2015, 10:13 a.m. UTC | #1 
2015-09-17 10:05, Remy Horton:
> Incorrect operator in ixgbe_get_eeprom & ixgbe_set_eeprom prevents
> last byte of EEPROM being read/written, and hence cannot be dumped
> or updated in entirity using these functions.
> 
> Signed-off-by: Remy Horton <remy.horton@intel.com>
> ---
>  drivers/net/ixgbe/ixgbe_ethdev.c | 8 ++++----
>  1 file changed, 4 insertions(+), 4 deletions(-)

From my previous comment:
"
Then creating a commit starting with "fix" should trigger 2 other things:
        - a Fixes: tag
        - an update in the release notes (because the bug exists in previous releases)
"

Maybe it does not deserve an entry in the release notes if the bug
has no real impact.
diff mbox

Patch

diff --git a/drivers/net/ixgbe/ixgbe_ethdev.c b/drivers/net/ixgbe/ixgbe_ethdev.c
index ec2918c..4a7ee3b 100644
--- a/drivers/net/ixgbe/ixgbe_ethdev.c
+++ b/drivers/net/ixgbe/ixgbe_ethdev.c
@@ -5444,8 +5444,8 @@  ixgbe_get_eeprom(struct rte_eth_dev *dev,
 
 	first = in_eeprom->offset >> 1;
 	length = in_eeprom->length >> 1;
-	if ((first >= hw->eeprom.word_size) ||
-	    ((first + length) >= hw->eeprom.word_size))
+	if ((first > hw->eeprom.word_size) ||
+	    ((first + length) > hw->eeprom.word_size))
 		return -EINVAL;
 
 	in_eeprom->magic = hw->vendor_id | (hw->device_id << 16);
@@ -5464,8 +5464,8 @@  ixgbe_set_eeprom(struct rte_eth_dev *dev,
 
 	first = in_eeprom->offset >> 1;
 	length = in_eeprom->length >> 1;
-	if ((first >= hw->eeprom.word_size) ||
-	    ((first + length) >= hw->eeprom.word_size))
+	if ((first > hw->eeprom.word_size) ||
+	    ((first + length) > hw->eeprom.word_size))
 		return -EINVAL;
 
 	in_eeprom->magic = hw->vendor_id | (hw->device_id << 16);