[PATCH] ethernet: e1000e: Fix possible uninit bug

From: Yu Hao
Date: Sun Jul 09 2023 - 20:58:05 EST


The variable phy_data should be initialized in function e1e_rphy.
However, there is not return value check, which means there is a
possible uninit read later for the variable.

Signed-off-by: Yu Hao <yhao016@xxxxxxx>
---
drivers/net/ethernet/intel/e1000e/netdev.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/intel/e1000e/netdev.c b/drivers/net/ethernet/intel/e1000e/netdev.c
index 771a3c909c45..a807358a8174 100644
--- a/drivers/net/ethernet/intel/e1000e/netdev.c
+++ b/drivers/net/ethernet/intel/e1000e/netdev.c
@@ -6909,7 +6909,7 @@ static int __e1000_resume(struct pci_dev *pdev)

/* report the system wakeup cause from S3/S4 */
if (adapter->flags2 & FLAG2_HAS_PHY_WAKEUP) {
- u16 phy_data;
+ u16 phy_data = 0;

e1e_rphy(&adapter->hw, BM_WUS, &phy_data);
if (phy_data) {
--
2.34.1