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authorGabor Juhos <juhosg@openwrt.org>2009-12-11 19:32:58 +0000
committerGabor Juhos <juhosg@openwrt.org>2009-12-11 19:32:58 +0000
commit8956009fa698e6ddf678d68cb32db4a76acfb632 (patch)
tree223d207b93725c042b963cbda832bc615a2b6d6c
parent95fa0702028d0aa0ffb625e5fd08e90d76d4290f (diff)
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ar71xx: fix NULL pointer dereference in the ethernet driver
SVN-Revision: 18755
-rw-r--r--target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx_phy.c8
1 files changed, 5 insertions, 3 deletions
diff --git a/target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx_phy.c b/target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx_phy.c
index 547f72edba..4233152aec 100644
--- 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 */
- mutex_lock(&ag->mii_bus->mdio_lock);
- ag->mii_bus->reset(ag->mii_bus);
- mutex_unlock(&ag->mii_bus->mdio_lock);
+ 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);