korg/linux
0
0
Fork 0
mirror of https://mirrors.bfsu.edu.cn/git/linux.git synced 2024-12-19 00:54:41 +08:00
Code Issues Packages Projects Releases Wiki Activity

rtlwifi: rtl8188ee: Fix potential race condition

Browse Source 
Flag rfchange_inprogress in struct rtl_ps_ctl is protected by a spinlock
in most routines but not in rtl88e_dm_watchdog(), which could
lead to a race condition. The necessary locking to prevent this condition
is added.

Reported-by: Pavel Andrianov <andrianov@ispras.ru>
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Cc: Pavel Andrianov <andrianov@ispras.ru>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
This commit is contained in:
Larry Finger 2016-06-25 13:37:43 -05:00 committed by Kalle Valo
parent 30462b514f
commit 204e2ab22e
1 changed files with 2 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/net/wireless/realtek/rtlwifi/rtl8188ee/dm.c
View File

@ -1790,6 +1790,7 @@ void rtl88e_dm_watchdog(struct ieee80211_hw *hw)
if (ppsc->p2p_ps_info.p2p_ps_mode)
fw_ps_awake = false;
spin_lock(&rtlpriv->locks.rf_ps_lock);
if ((ppsc->rfpwr_state == ERFON) &&
((!fw_current_inpsmode) && fw_ps_awake) &&
(!ppsc->rfchange_inprogress)) {
@ -1802,4 +1803,5 @@ void rtl88e_dm_watchdog(struct ieee80211_hw *hw)
rtl88e_dm_check_edca_turbo(hw);
rtl88e_dm_antenna_diversity(hw);
}
spin_unlock(&rtlpriv->locks.rf_ps_lock);
}