Commit 9e0dc890 authored by Pontus Fuchs's avatar Pontus Fuchs Committed by Luciano Coelho
Browse files

wl12xx: Make sure HW is available in sched scan ops 



The sched_scan_(stop|start) ops fails to check for WL1271_STATE_OFF.
This can lead to a race where the driver tries to access the HW
while it's off.

Fix this by checking for WL1271_STATE_OFF before accessing the HW.

Signed-off-by: default avatarPontus Fuchs <pontus.fuchs@gmail.com>
Signed-off-by: default avatarLuciano Coelho <coelho@ti.com>
parent 15944aef

drivers/net/wireless/wl12xx/main.c

+8 −0
Original line number Diff line number Diff line
@@ -3108,6 +3108,11 @@ static int wl1271_op_sched_scan_start(struct ieee80211_hw *hw, 


	mutex_lock(&wl->mutex);



	if (wl->state == WL1271_STATE_OFF) {

		ret = -EAGAIN;

		goto out;

	}



	ret = wl1271_ps_elp_wakeup(wl);

	if (ret < 0)

		goto out;
@@ -3139,6 +3144,9 @@ static void wl1271_op_sched_scan_stop(struct ieee80211_hw *hw, 


	mutex_lock(&wl->mutex);



	if (wl->state == WL1271_STATE_OFF)

		goto out;



	ret = wl1271_ps_elp_wakeup(wl);

	if (ret < 0)

		goto out;