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[PATCH 08/55] staging: wfx: detect race condition in WEP authentication

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From: Jérôme Pouiller <jerome.pouiller@xxxxxxxxxx>

Current code has a special case to handle association with WEP. Before
to rework the tx data handling, let's try to detect any possible misuse
of this code.

Signed-off-by: Jérôme Pouiller <jerome.pouiller@xxxxxxxxxx>
---
 drivers/staging/wfx/queue.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/staging/wfx/queue.c b/drivers/staging/wfx/queue.c
index c7ee90888f69..680fed31cefb 100644
--- a/drivers/staging/wfx/queue.c
+++ b/drivers/staging/wfx/queue.c
@@ -422,6 +422,7 @@ static bool hif_handle_tx_data(struct wfx_vif *wvif, struct sk_buff *skb,
 		break;
 	case do_wep:
 		wfx_tx_lock(wvif->wdev);
+		WARN_ON(wvif->wep_pending_skb);
 		wvif->wep_default_key_id = tx_priv->hw_key->keyidx;
 		wvif->wep_pending_skb = skb;
 		if (!schedule_work(&wvif->wep_key_work))
-- 
2.20.1




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