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net: usb: asix: Fix less than zero comparison of a u16

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The comparison of the u16 priv->phy_addr < 0 is always false because
phy_addr is unsigned. Fix this by assigning the return from the call
to function asix_read_phy_addr to int ret and using this for the
less than zero error check comparison.

Addresses-Coverity: ("Unsigned compared against 0")
Fixes: e532a096be ("net: usb: asix: ax88772: add phylib support")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Colin Ian King 2021-06-09 11:24:47 +01:00 committed by David S. Miller
parent 7f3579e189
commit e676659465
1 changed files with 5 additions and 3 deletions
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8
drivers/net/usb/asix_devices.c
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@ -704,9 +704,11 @@ static int ax88772_init_phy(struct usbnet *dev)
struct asix_common_private *priv = dev->driver_priv;
int ret;
priv->phy_addr = asix_read_phy_addr(dev, true);
if (priv->phy_addr < 0)
return priv->phy_addr;
ret = asix_read_phy_addr(dev, true);
if (ret < 0)
return ret;
priv->phy_addr = ret;
snprintf(priv->phy_name, sizeof(priv->phy_name), PHY_ID_FMT,
priv->mdio->id, priv->phy_addr);