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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>
This commit is contained in:
Teemu Paasikivi 2010-09-24 07:23:55 +03:00 committed by John W. Linville
parent 56af326830
commit 92e44948b2
1 changed files with 2 additions and 1 deletions
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3
net/wireless/nl80211.c
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@ -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); err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
if (err) if (err)
goto unlock_rdev; goto unlock_rtnl;
wdev = dev->ieee80211_ptr; wdev = dev->ieee80211_ptr;
@ -5014,6 +5014,7 @@ static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
unlock_rdev: unlock_rdev:
cfg80211_unlock_rdev(rdev); cfg80211_unlock_rdev(rdev);
dev_put(dev); dev_put(dev);
unlock_rtnl:
rtnl_unlock(); rtnl_unlock();
out: out: