[Intel-wired-lan] [PATCH net v1] igb: fix nvm.ops.read() error handling

[Aleksandr Loktionov]

Add error handling into igb_set_eeprom() function, in case
nvm.ops.read() fails just quit with error code asap.

Fixes: 9d5c824399de ("igb: PCI-Express 82575 Gigabit Ethernet driver")
Signed-off-by: Aleksandr Loktionov <aleksandr.loktionov at intel.com>
---
 drivers/net/ethernet/intel/igb/igb_ethtool.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/intel/igb/igb_ethtool.c b/drivers/net/ethernet/intel/igb/igb_ethtool.c
index 7d60da1..1567822 100644
--- a/drivers/net/ethernet/intel/igb/igb_ethtool.c
+++ b/drivers/net/ethernet/intel/igb/igb_ethtool.c
@@ -822,6 +822,8 @@ static int igb_set_eeprom(struct net_device *netdev,
 		 */
 		ret_val = hw->nvm.ops.read(hw, last_word, 1,
 				   &eeprom_buff[last_word - first_word]);
+		if (ret_val)
+			goto out;
 	}
 
 	/* Device's eeprom is always little-endian, word addressable */
@@ -839,7 +841,7 @@ static int igb_set_eeprom(struct net_device *netdev,
 	/* Update the checksum if nvm write succeeded */
 	if (ret_val == 0)
 		hw->nvm.ops.update(hw);
-
+out:
 	igb_set_fw_version(adapter);
 	kfree(eeprom_buff);
 	return ret_val;
-- 
2.31.1