From b5eeed8cb6097c8ea660b6598d36fdbb94065a22 Mon Sep 17 00:00:00 2001
From: Malcolm Priestley <tvboxspy@gmail.com>
Date: Sun, 31 May 2015 10:35:28 +0100
Subject: [PATCH] staging: vt6655: device_rx_srv check sk_buff is NULL

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>
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