Flag rfchange_inprogress in struct rtl_ps_ctl is protected by a spinlock
in most routines but not in rtl92ee_dm_watchdog(), which could
lead to a race condition. The necessary locking to prevent this condition
is added.
Reported-by: Pavel Andrianov <andrianov@xxxxxxxxx>
Signed-off-by: Larry Finger <Larry.Finger@xxxxxxxxxxxx>
Cc: Pavel Andrianov <andrianov@xxxxxxxxx>
---
drivers/net/wireless/realtek/rtlwifi/rtl8192ee/dm.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/net/wireless/realtek/rtlwifi/rtl8192ee/dm.c b/drivers/net/wireless/realtek/rtlwifi/rtl8192ee/dm.c
index 459f3d0..46efba0 100644
--- a/drivers/net/wireless/realtek/rtlwifi/rtl8192ee/dm.c
+++ b/drivers/net/wireless/realtek/rtlwifi/rtl8192ee/dm.c
@@ -1219,6 +1219,7 @@ void rtl92ee_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)) {
@@ -1233,4 +1234,5 @@ void rtl92ee_dm_watchdog(struct ieee80211_hw *hw)
rtl92ee_dm_dynamic_atc_switch(hw);
rtl92ee_dm_dynamic_primary_cca_ckeck(hw);
}
+ spin_unlock(&rtlpriv->locks.rf_ps_lock);
}
--
2.1.4
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