staging: wfx: device already handle sleep mode during scan

The device is not allowed to enter in sleep mode during scan. However,
this is already handled by the device. So driver does not have to care
about it.
Signed-off-by: Jérôme Pouiller <jerome.pouiller@silabs.com>
Link: https://lore.kernel.org/r/20191217161318.31402-46-Jerome.Pouiller@silabs.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/wfx/bh.c

@@ -271,8 +271,7 @@ static void bh_work(struct work_struct *work)
 
 	if (last_op_is_rx)
 		ack_sdio_data(wdev);
-	if (!wdev->hif.tx_buffers_used && !work_pending(work) &&
-	    !atomic_read(&wdev->scan_in_progress)) {
+	if (!wdev->hif.tx_buffers_used && !work_pending(work)) {
 		device_release(wdev);
 		release_chip = true;
 	}

drivers/staging/wfx/scan.c

@@ -44,7 +44,6 @@ static int wfx_scan_start(struct wfx_vif *wvif, struct wfx_scan_params *scan)
 	tmo += scan->scan_req.num_of_channels *
 	       ((20 * (scan->scan_req.max_channel_time)) + 10);
 	atomic_set(&wvif->scan.in_progress, 1);
-	atomic_set(&wvif->wdev->scan_in_progress, 1);
 
 	schedule_delayed_work(&wvif->scan.timeout, msecs_to_jiffies(tmo));
 	hif_scan(wvif, scan);
@@ -232,8 +231,6 @@ void wfx_scan_work(struct work_struct *work)
 static void wfx_scan_complete(struct wfx_vif *wvif)
 {
 	up(&wvif->scan.lock);
-	atomic_set(&wvif->wdev->scan_in_progress, 0);
-
 	wfx_scan_work(&wvif->scan.work);
 }
 

drivers/staging/wfx/wfx.h

@@ -60,7 +60,6 @@ struct wfx_dev {
 	struct mutex		rx_stats_lock;
 
 	int			output_power;
-	atomic_t		scan_in_progress;
 };
 
 struct wfx_vif {