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macb: fix mdiobus_scan() error check

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Now mdiobus_scan() returns ERR_PTR(-ENODEV) instead of NULL if the PHY
device ID was read as all ones. As this was not  an error before, this
value  should be filtered out now in this driver.

Fixes: b74766a0a0fe ("phylib: don't return NULL from get_phy_device()")
Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Sergei Shtylyov 2016-05-01 01:47:36 +03:00 committed by David S. Miller
parent 6dd7454258
commit ce24c2b8a9
1 changed files with 2 additions and 1 deletions
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3
drivers/net/ethernet/cadence/macb.c
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@ -458,7 +458,8 @@ static int macb_mii_init(struct macb *bp)
struct phy_device *phydev;
phydev = mdiobus_scan(bp->mii_bus, i);
if (IS_ERR(phydev)) {
if (IS_ERR(phydev) &&
PTR_ERR(phydev) != -ENODEV) {
err = PTR_ERR(phydev);
break;
}