wlcore: Don't recover during boot

While recursive recovery is avoided during shutdown, a new recovery may
be queued when the FW boots. The recovery work will then try to stop an
already stopped hardware, which will most likely result in a kernel
panic.

Fix this by verifying that wl->state is on before queueing a new
recovery.

Signed-off-by: Ido Yariv <ido@wizery.com>
Signed-off-by: Arik Nemtsov <arik@wizery.com>
Signed-off-by: Luciano Coelho <luca@coelho.fi>

diff --git a/drivers/net/wireless/ti/wlcore/main.c b/drivers/net/wireless/ti/wlcore/main.c
index 7b825e8..3f5d87e 100644 (file)
--- a/drivers/net/wireless/ti/wlcore/main.c
+++ b/drivers/net/wireless/ti/wlcore/main.c
@@ -775,8 +775,9 @@ void wl12xx_queue_recovery_work(struct wl1271 *wl)
        WARN_ON(!test_bit(WL1271_FLAG_INTENDED_FW_RECOVERY, &wl->flags));
 
        /* Avoid a recursive recovery */
-       if (!test_and_set_bit(WL1271_FLAG_RECOVERY_IN_PROGRESS, &wl->flags)) {
+       if (wl->state == WLCORE_STATE_ON) {
                wl->state = WLCORE_STATE_RESTARTING;
+               set_bit(WL1271_FLAG_RECOVERY_IN_PROGRESS, &wl->flags);
                wlcore_disable_interrupts_nosync(wl);
                ieee80211_queue_work(wl->hw, &wl->recovery_work);
        }