From: Inki Dae <inki.dae@samsung.com>
Date: Wed, 28 Nov 2012 10:09:31 +0000 (+0900)
Subject: drm/exynos: add dmabuf attach/detach callbacks.
X-Git-Tag: v3.8-rc1~82^2~1^2~27
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a7b362fb3bba310426b90e7bac83a2206808e425;p=pandora-kernel.git

drm/exynos: add dmabuf attach/detach callbacks.

With this patch, When dma_buf_unmap_attachment is called,
the pages of sgt aren't unmapped from iommu table.
Instead, when dma_buf_detach is called, that would be done.

And also removes exynos_get_sgt function used to get clone sgt
and uses attachment's sgt instead. This patch would resolve
performance deterioration issue when v4l2-based driver is using
the buffer imported from gem.

This change is derived from videobuf2-dma-contig.c

Signed-off-by: Inki Dae <inki.dae@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
---

Reading git-diff-tree failed