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: Pontus Fuchs <pontus.fuchs@gmail.com>
Signed-off-by: Luciano Coelho <coelho@ti.com>
diff --git a/drivers/net/wireless/wl12xx/main.c b/drivers/net/wireless/wl12xx/main.c
index f8748ce..f2a958c 100644
--- a/drivers/net/wireless/wl12xx/main.c
+++ b/drivers/net/wireless/wl12xx/main.c
@@ -3108,6 +3108,11 @@
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 @@
mutex_lock(&wl->mutex);
+ if (wl->state == WL1271_STATE_OFF)
+ goto out;
+
ret = wl1271_ps_elp_wakeup(wl);
if (ret < 0)
goto out;