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staging: vt6655: device_rx_srv check sk_buff is NULL

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There is a small chance that pRD->pRDInfo->skb could go NULL
while the interrupt is processing.

Put NULL check on loop to break out.

Signed-off-by: Malcolm Priestley <tvboxspy@gmail.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Malcolm Priestley 2015-05-31 10:35:28 +01:00 committed by Greg Kroah-Hartman
parent 41b9e5e516
commit b5eeed8cb6
1 changed files with 4 additions and 0 deletions
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4
drivers/staging/vt6655/device_main.c
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@ -805,6 +805,10 @@ static int device_rx_srv(struct vnt_private *pDevice, unsigned int uIdx)
pRD = pRD->next) { pRD = pRD->next) {
if (works++ > 15) if (works++ > 15)
break; break;
if (!pRD->pRDInfo->skb)
break;
if (vnt_receive_frame(pDevice, pRD)) { if (vnt_receive_frame(pDevice, pRD)) {
if (!device_alloc_rx_buf(pDevice, pRD)) { if (!device_alloc_rx_buf(pDevice, pRD)) {
dev_err(&pDevice->pcid->dev, dev_err(&pDevice->pcid->dev,