From 690e781c5a3241d2366a3120ca410162da9c365e Mon Sep 17 00:00:00 2001 From: Dan Carpenter Date: Fri, 14 May 2010 16:50:56 +0200 Subject: [PATCH] ath9k_htc: dereferencing before check in hif_usb_tx_cb() After c11d8f89d3b7: "ath9k_htc: Simplify TX URB management" we no longer assume that tx_buf is a non-null pointer. Signed-off-by: Dan Carpenter Acked-by: Sujith Signed-off-by: John W. Linville --- drivers/net/wireless/ath/ath9k/hif_usb.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/net/wireless/ath/ath9k/hif_usb.c b/drivers/net/wireless/ath/ath9k/hif_usb.c index 46dc41a..ac82911 100644 --- a/drivers/net/wireless/ath/ath9k/hif_usb.c +++ b/drivers/net/wireless/ath/ath9k/hif_usb.c @@ -107,12 +107,14 @@ static inline void ath9k_skb_queue_purge(struct hif_device_usb *hif_dev, static void hif_usb_tx_cb(struct urb *urb) { struct tx_buf *tx_buf = (struct tx_buf *) urb->context; - struct hif_device_usb *hif_dev = tx_buf->hif_dev; + struct hif_device_usb *hif_dev; struct sk_buff *skb; - if (!hif_dev || !tx_buf) + if (!tx_buf || !tx_buf->hif_dev) return; + hif_dev = tx_buf->hif_dev; + switch (urb->status) { case 0: break; -- 2.7.4