diff options
| author | Helmut Schaa <helmut.schaa@googlemail.com> | 2012-01-27 10:02:51 (GMT) |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2012-01-30 20:48:18 (GMT) |
| commit | 2ab694d302b489c5aa49c360dc97149b77c96586 (patch) | |
| tree | 18ff458004469014eaafe24618a9bdd45a11d780 /net | |
| parent | 83d5cc012441531ab0bf6f99881958e964e9cf11 (diff) | |
| download | linux-2ab694d302b489c5aa49c360dc97149b77c96586.tar.xz | |
mac80211: Fix incorrect num_sta_ps decrement in __sta_info_destroy
When WLAN_STA_PS_DRIVER is set by ieee80211_sta_block_awake the
num_sta_ps counter is not incremented. Hence, we shouldn't decrement
it in __sta_info_destroy if only WLAN_STA_PS_DRIVER is set. This
could result in an incorrect num_sta_ps counter leading to strange side
effects with associated powersaving clients.
Fix this by only decrementing num_sta_ps when WLAN_STA_PS_STA was set
before.
Signed-off-by: Helmut Schaa <helmut.schaa@googlemail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'net')
| -rw-r--r-- | net/mac80211/sta_info.c | 4 |
1 files changed, 1 insertions, 3 deletions
diff --git a/net/mac80211/sta_info.c b/net/mac80211/sta_info.c index df8f0a2..0c79593 100644 --- a/net/mac80211/sta_info.c +++ b/net/mac80211/sta_info.c @@ -750,12 +750,10 @@ int __must_check __sta_info_destroy(struct sta_info *sta) sta->dead = true; - if (test_sta_flag(sta, WLAN_STA_PS_STA) || - test_sta_flag(sta, WLAN_STA_PS_DRIVER)) { + if (test_sta_flag(sta, WLAN_STA_PS_STA)) { BUG_ON(!sdata->bss); clear_sta_flag(sta, WLAN_STA_PS_STA); - clear_sta_flag(sta, WLAN_STA_PS_DRIVER); atomic_dec(&sdata->bss->num_sta_ps); sta_info_recalc_tim(sta); |