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net: ethernet: stmmac: Fix signedness bug in ipq806x_gmac_of_parse() 

The "gmac->phy_mode" variable is an enum and in this context GCC will
treat it as an unsigned int so the error handling will never be
triggered.

Fixes: b1c17215d7 ("stmmac: add ipq806x glue layer")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Dan Carpenter 2019-09-25 14:05:54 +03:00 committed by David S. Miller
parent 1a4b62a0b8
commit 231042181d
1 changed files with 1 additions and 1 deletions
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2
drivers/net/ethernet/stmicro/stmmac/dwmac-ipq806x.c
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@ -191,7 +191,7 @@ static int ipq806x_gmac_of_parse(struct ipq806x_gmac *gmac)
struct device *dev = &gmac->pdev->dev;
gmac->phy_mode = of_get_phy_mode(dev->of_node);
if (gmac->phy_mode < 0) {
if ((int)gmac->phy_mode < 0) {
dev_err(dev, "missing phy mode property\n");
return -EINVAL;
}