From 348f7d4adee97f222e3ad9ff97956ca3793d11c6 Mon Sep 17 00:00:00 2001
From: "andrea.merello" <andrea.merello@gmail.com>
Date: Wed, 5 Feb 2014 22:38:06 +0100
Subject: [PATCH] rtl8180: Add error check for pci_map_single return value in
 TX path

Orignal code will not detect a DMA mapping failure, causing the HW
to attempt a DMA from an invalid address.

This patch add the error check and eventually simply drops the TX
packet if we can't map it for DMA.

Signed-off-by: andrea merello <andrea.merello@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
---
Reading git-format-patch failed