From: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Date: Fri, 26 Oct 2007 11:56:24 +0000 (+0200)
Subject: x86: fix pci-gart failure handling
X-Git-Tag: v2.6.24-rc2~104^2~5
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=5336940dd8b11180a0340ba886db62f728377d19;p=pandora-kernel.git

x86: fix pci-gart failure handling

blk_rq_map_sg doesn't initialize sg->dma_address/length to zero
anymore. Some low level drivers reuse sg lists without initializing so
IOMMUs might get non-zero dma_address/length. If map_sg fails, we need
pass the number of the mapped entries to gart_unmap_sg.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
---

Reading git-diff-tree failed