net: bcmgenet: fix bcmgenet_fixed_phy_link_update()
bcmgenet_fixed_phy_link_update() is getting called from PHY detach path:
bcmgenet_fixed_phy_link_update()
fixed_mdio_read()
mdiobus_read()
genphy_suspend()
phy_suspend()
phy_detach()
bcmgenet_close()
Looking at phy_detach() code, it does:
phydev->attached_dev->phydev = NULL;
phydev->attached_dev = NULL;
phy_suspend(phydev);
bcmgenet_fixed_phy_link_update() needs to check its function parameters
more carefully before doing anything.
Change-Id: Ic3b888c1cdc4cd9b88fd093a048bfcc856e6809b
1 file changed
