From: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Date: Thu, 2 Dec 2010 16:36:24 +0000 (-0500)
Subject: nouveau/ttm/PCIe: Use dma_addr if TTM has set it.
X-Git-Tag: v2.6.39-rc1~458^2~23^2~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e0138c26cdeee8c033256ccd9e07d66db3c998be;p=pandora-kernel.git

nouveau/ttm/PCIe: Use dma_addr if TTM has set it.

If the TTM layer has used the DMA API to setup pages that are
TTM_PAGE_FLAG_DMA32 (look at patch titled: "ttm: Utilize the
DMA API for pages that have TTM_PAGE_FLAG_DMA32 set"), lets
use it when programming the GART in the PCIe type cards.

This patch skips doing the pci_map_page (and pci_unmap_page) if
there is a DMA addresses passed in for that page. If the dma_address
is zero (or DMA_ERROR_CODE), then we continue on with our old
behaviour.

[v2: Added a review-by tag]

Reviewed-by: Thomas Hellstrom <thomas@shipmail.org>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Tested-by: Ian Campbell <ian.campbell@citrix.com>
---

Reading git-diff-tree failed