[PATCH 4.19 579/639] net: socionext: Fix a signedness bug in ave_probe()

[Greg Kroah-Hartman]

From: Dan Carpenter <dan.carpenter@xxxxxxxxxx>

[ Upstream commit 7f9e88e6ef8c971f2c638b5ff7044c59b5d0f58d ]

The "phy_mode" variable is an enum and in this context GCC treats it as
an unsigned int so the error handling is never triggered.

Fixes: 4c270b55a5af ("net: ethernet: socionext: add AVE ethernet driver")
Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
Reviewed-by: Kunihiko Hayashi <hayashi.kunihiko@xxxxxxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 drivers/net/ethernet/socionext/sni_ave.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/socionext/sni_ave.c b/drivers/net/ethernet/socionext/sni_ave.c
index 09d25b87cf7c0..c309accc6797e 100644
--- a/drivers/net/ethernet/socionext/sni_ave.c
+++ b/drivers/net/ethernet/socionext/sni_ave.c
@@ -1575,7 +1575,7 @@ static int ave_probe(struct platform_device *pdev)
 
 	np = dev->of_node;
 	phy_mode = of_get_phy_mode(np);
-	if (phy_mode < 0) {
+	if ((int)phy_mode < 0) {
 		dev_err(dev, "phy-mode not found\n");
 		return -EINVAL;
 	}
-- 
2.20.1