mac80211: Fix incorrect num_sta_ps decrement in __sta_info_destroy
authorHelmut Schaa <helmut.schaa@googlemail.com>
Fri, 27 Jan 2012 10:02:51 +0000 (11:02 +0100)
committerJohn W. Linville <linville@tuxdriver.com>
Mon, 30 Jan 2012 20:48:18 +0000 (15:48 -0500)
commit2ab694d302b489c5aa49c360dc97149b77c96586
tree18ff458004469014eaafe24618a9bdd45a11d780
parent83d5cc012441531ab0bf6f99881958e964e9cf11
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>
net/mac80211/sta_info.c