From: Dan Williams <dan.j.williams@intel.com>
Date: Fri, 17 Jun 2011 17:40:43 +0000 (-0700)
Subject: isci: fix dma_unmap_sg usage
X-Git-Tag: v3.0-rc6~1^2~1^2~22
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ddcc7e347a891937be65358b43f40b7f81185f8f;p=pandora-kernel.git

isci: fix dma_unmap_sg usage

One bug and a cleanup:
1/ Fix cases where we were unmapping invalid addresses (smp requests were
   being unmapped)

[  604.662770] ------------[ cut here ]------------
[  604.668026] WARNING: at lib/dma-debug.c:800 check_unmap+0x418/0x740()
[  604.675315] Hardware name: SandyBridge Platform
[  604.680465] isci 0000:03:00.0: DMA-API: device driver tries to free an invalid DMA memory address

2/ The unmap routine is too large to be an inline function, and
   isci_request_io_request_get_next_sge is unused.

Signed-off-by: Dan Williams <dan.j.williams@intel.com>
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