[PATCH 4.14 312/343] net: axienet: fix a signedness bug in probe

[Greg Kroah-Hartman]

From: Dan Carpenter <dan.carpenter@xxxxxxxxxx>

[ 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 <dan.carpenter@xxxxxxxxxx>
Reviewed-by: Radhey Shyam Pandey <radhey.shyam.pandey@xxxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 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 9ccd08a051f6a..1152d74433f6e 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