* [PATCH] NFC: Handle return value of skb_dequeue()
@ 2017-12-16 19:44 Arvind Yadav
0 siblings, 0 replies; only message in thread
From: Arvind Yadav @ 2017-12-16 19:44 UTC (permalink / raw)
To: sameo, davem; +Cc: linux-kernel, linux-wireless, netdev
skb_dequeue() will return NULL for an empty list or a pointer
to the head element.
Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
---
net/nfc/rawsock.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/net/nfc/rawsock.c b/net/nfc/rawsock.c
index e2188de..c6de1ac 100644
--- a/net/nfc/rawsock.c
+++ b/net/nfc/rawsock.c
@@ -201,6 +201,10 @@ static void rawsock_tx_work(struct work_struct *work)
}
skb = skb_dequeue(&sk->sk_write_queue);
+ if (!skb) {
+ rawsock_write_queue_purge(sk);
+ return;
+ }
sock_hold(sk);
rc = nfc_data_exchange(dev, target_idx, skb,
--
2.7.4
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2017-12-16 19:44 [PATCH] NFC: Handle return value of skb_dequeue() Arvind Yadav
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