diff mbox series

[29/32] staging: wfx: wfx_flush() did not ensure that frames are processed

Message ID 20200401110405.80282-30-Jerome.Pouiller@silabs.com (mailing list archive)
State Not Applicable
Delegated to: Johannes Berg
Headers show
Series staging: wfx: rework the Tx queue | expand

Commit Message

Jérôme Pouiller April 1, 2020, 11:04 a.m. UTC 
From: Jérôme Pouiller <jerome.pouiller@silabs.com>

wfx_flush() exited once all frames are retrieved from the device.
However, it did not ensure they were processed by driver before to
return. Therefore, some frame may be processed after the interface has
disappear.

Change the place we signal that the queue is empty to fix that.

Signed-off-by: Jérôme Pouiller <jerome.pouiller@silabs.com>
---
 drivers/staging/wfx/bh.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
diff mbox series

Patch

diff --git a/drivers/staging/wfx/bh.c b/drivers/staging/wfx/bh.c
index 9fcab00a3733..ba7fa0a7cd9a 100644
--- a/drivers/staging/wfx/bh.c
+++ b/drivers/staging/wfx/bh.c
@@ -108,8 +108,6 @@  static int rx_helper(struct wfx_dev *wdev, size_t read_len, int *is_cnf)
 			release_count = 1;
 		WARN(wdev->hif.tx_buffers_used < release_count, "corrupted buffer counter");
 		wdev->hif.tx_buffers_used -= release_count;
-		if (!wdev->hif.tx_buffers_used)
-			wake_up(&wdev->hif.tx_buffers_empty);
 	}
 	_trace_hif_recv(hif, wdev->hif.tx_buffers_used);
 
@@ -123,6 +121,8 @@  static int rx_helper(struct wfx_dev *wdev, size_t read_len, int *is_cnf)
 	skb_put(skb, hif->len);
 	// wfx_handle_rx takes care on SKB livetime
 	wfx_handle_rx(wdev, skb);
+	if (!wdev->hif.tx_buffers_used)
+		wake_up(&wdev->hif.tx_buffers_empty);
 
 	return piggyback;