diff --git a/drivers/staging/wfx/hif_tx.c b/drivers/staging/wfx/hif_tx.c
index 0b1ed12c0e83..ae3cc5919dcd 100644
--- a/drivers/staging/wfx/hif_tx.c
+++ b/drivers/staging/wfx/hif_tx.c
@@ -72,8 +72,8 @@ int wfx_cmd_send(struct wfx_dev *wdev, struct wfx_hif_msg *request,
 	wfx_bh_request_tx(wdev);
 
 	if (no_reply) {
-		/* Chip won't reply. Give enough time to the wq to send the buffer. */
-		msleep(100);
+		/* Chip won't reply. Ensure the wq has send the buffer before to continue. */
+		flush_workqueue(system_highpri_wq);
 		ret = 0;
 		goto end;
 	}