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[v3,07/32] staging: wfx: fix atomic accesses in wfx_tx_queue_empty()

Message ID 20210913130203.1903622-8-Jerome.Pouiller@silabs.com (mailing list archive)
State Not Applicable
Delegated to: Johannes Berg
Headers show
Series staging/wfx: usual maintenance | expand

Commit Message

Jérôme Pouiller Sept. 13, 2021, 1:01 p.m. UTC 
From: Jérôme Pouiller <jerome.pouiller@silabs.com>

Checking if a skb_queue is empty is not an atomic operation. We should
take some precautions to do it.

Signed-off-by: Jérôme Pouiller <jerome.pouiller@silabs.com>
---
 drivers/staging/wfx/queue.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
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Patch

diff --git a/drivers/staging/wfx/queue.c b/drivers/staging/wfx/queue.c
index 31c37f69c295..fa272c120f1c 100644
--- a/drivers/staging/wfx/queue.c
+++ b/drivers/staging/wfx/queue.c
@@ -86,7 +86,8 @@  void wfx_tx_queues_check_empty(struct wfx_vif *wvif)
 
 bool wfx_tx_queue_empty(struct wfx_vif *wvif, struct wfx_queue *queue)
 {
-	return skb_queue_empty(&queue->normal) && skb_queue_empty(&queue->cab);
+	return skb_queue_empty_lockless(&queue->normal) &&
+	       skb_queue_empty_lockless(&queue->cab);
 }
 
 static void __wfx_tx_queue_drop(struct wfx_vif *wvif,