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authorjuhosg <juhosg@3c298f89-4303-0410-b956-a3cf2f4a3e73>2009-12-11 19:32:58 +0000
committerjuhosg <juhosg@3c298f89-4303-0410-b956-a3cf2f4a3e73>2009-12-11 19:32:58 +0000
commit1e52fbecdbd7b91f8b14f2ec4b13cfcf2cab59a2 (patch)
tree82ccfbf44b23f68dfae5fa9c2949af834cf08fdf /target/linux/ar71xx/files/drivers/net/ag71xx
parent51528b37855dc547d70270f08f11cbedcf58c052 (diff)
ar71xx: fix NULL pointer dereference in the ethernet driver
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@18755 3c298f89-4303-0410-b956-a3cf2f4a3e73
Diffstat (limited to 'target/linux/ar71xx/files/drivers/net/ag71xx')
-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 547f72edb..4233152ae 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);