ar71xx: fix NULL pointer dereference in the ethernet driver

SVN-Revision: 18755
15 years ago · 8956009fa6
parent 95fa070202
commit 8956009fa6
1 changed files with 5 additions and 3 deletions
--- a/target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx_phy.c
+++ b/target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx_phy.c
@ -309,9 +309,11 @@ int ag71xx_phy_connect(struct ag71xx *ag)
 	}

 	/* Reset the mdio bus explicitly */
+	if (ag->mii_bus->reset) {
 		mutex_lock(&ag->mii_bus->mdio_lock);
 		ag->mii_bus->reset(ag->mii_bus);
 		mutex_unlock(&ag->mii_bus->mdio_lock);
+	}

 	if (pdata->phy_mask)
 		return ag71xx_phy_connect_multi(ag);