wl12xx: mark no sched scan only after FW event

stop sched scan isn't an immediate operation
and we need to wait for PERIODIC_SCAN_COMPLETE_EVENT_ID
after sending a stop before changing internal state
and notifying upper layers.
Not doing this caused problems when canceling an existing sched
scan and immediately requesting to start a new one
with a different configuration as the FW was still
in the middle of the previous sched scan.

Signed-off-by: Eyal Shapira <eyal@wizery.com>
Signed-off-by: Luciano Coelho <coelho@ti.com>

drivers/net/wireless/wl12xx/event.c

@@ -267,8 +267,8 @@ static int wl1271_event_process(struct wl1271 *wl, struct event_mailbox *mbox)
 		wl1271_debug(DEBUG_EVENT, "PERIODIC_SCAN_COMPLETE_EVENT "
 			     "(status 0x%0x)", mbox->scheduled_scan_status);
 		if (wl->sched_scanning) {
-			wl1271_scan_sched_scan_stop(wl);
 			ieee80211_sched_scan_stopped(wl->hw);
+			wl->sched_scanning = false;
 		}
 	}
 

drivers/net/wireless/wl12xx/scan.c

@@ -754,7 +754,6 @@ void wl1271_scan_sched_scan_stop(struct wl1271 *wl)
 		wl1271_error("failed to send sched scan stop command");
 		goto out_free;
 	}
-	wl->sched_scanning = false;
 
 out_free:
 	kfree(stop);