Thread (54 messages) 54 messages, 1 author, 2020-01-16
STALE2362d REVIEWED: 1 (0M)

[PATCH AUTOSEL 4.14 307/371] net: axienet: fix a signedness bug in probe

From: Sasha Levin <sashal@kernel.org>
Date: 2020-01-16 17:29:51
Also in: lkml, netdev, stable
Subsystem: networking drivers, the rest, xilinx axi ethernet driver · Maintainers: Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds, Radhey Shyam Pandey

From: Dan Carpenter <redacted>

[ Upstream commit 73e211e11be86715d66bd3c9d38b3c34b05fca9a ]

The "lp->phy_mode" is an enum but in this context GCC treats it as an
unsigned int so the error handling is never triggered.

Fixes: ee06b1728b95 ("net: axienet: add support for standard phy-mode binding")
Signed-off-by: Dan Carpenter <redacted>
Reviewed-by: Radhey Shyam Pandey <redacted>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/ethernet/xilinx/xilinx_axienet_main.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/xilinx/xilinx_axienet_main.c b/drivers/net/ethernet/xilinx/xilinx_axienet_main.c
index 9ccd08a051f6..1152d74433f6 100644
--- a/drivers/net/ethernet/xilinx/xilinx_axienet_main.c
+++ b/drivers/net/ethernet/xilinx/xilinx_axienet_main.c
@@ -1574,7 +1574,7 @@ static int axienet_probe(struct platform_device *pdev)
 		}
 	} else {
 		lp->phy_mode = of_get_phy_mode(pdev->dev.of_node);
-		if (lp->phy_mode < 0) {
+		if ((int)lp->phy_mode < 0) {
 			ret = -EINVAL;
 			goto free_netdev;
 		}
-- 
2.20.1


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