From: Neil Horman <nhorman@tuxdriver.com>
Date: Wed, 17 Sep 2014 13:04:44 +0000 (-0400)
Subject: 3c59x: Add dma error checking and recovery
X-Git-Tag: fixes-for-v3.18-merge-window~87^2~19
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=6f2b6a3005b2c34c39f207a87667564f64f2f91a;p=pandora-kernel.git

3c59x: Add dma error checking and recovery

Noted that 3c59x has no checks on transmit for failed DMA mappings, and no
ability to unmap fragments when a single map fails in the middle of a transmit.
This patch provides error checking to ensure that dma mappings work properly,
and unrolls an skb mapping if a fragmented skb transmission has a mapping
failure to prevent leaks.

Signed-off-by: Neil Horman <nhorman@tuxdriver.com>
CC: Linux Kernel list <linux-kernel@vger.kernel.org>
CC: "David S. Miller" <davem@davemloft.net>
CC: Meelis Roos <mroos@linux.ee>
Tested-by: Meelis Roos <mroos@linux.ee>
---

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