nl80211: Fix exit from nl80211_set_power_save

If interface does not existk, when nl80211_set_power_save is called, (eg.
module has been unloaded) it has been causing kernel panic. Added new
goto target to avoid crash if get_rdev_dev_by_info_ifindex does not
return dev and rdev pointers.

Signed-off-by: Teemu Paasikivi <ext-teemu.3.paasikivi@nokia.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 2 insertions, 1 deletions

diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index f15b1af2c768..4ff827e8c362 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -4990,7 +4990,7 @@ static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
 
         err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
         if (err)
-                goto unlock_rdev;
+                goto unlock_rtnl;
 
         wdev = dev->ieee80211_ptr;
 
@@ -5014,6 +5014,7 @@ static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
 unlock_rdev:
         cfg80211_unlock_rdev(rdev);
         dev_put(dev);
+unlock_rtnl:
         rtnl_unlock();
 
 out: