From: Inki Dae <inki.dae@samsung.com>
Date: Wed, 26 Dec 2012 09:06:01 +0000 (+0900)
Subject: drm/exynos: consider buffer allocation without iommu
X-Git-Tag: v3.8-rc3~6^2~3^2~21
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=694be458794da6415288978c7b5f8288ae2dc5c3;p=pandora-kernel.git

drm/exynos: consider buffer allocation without iommu

This patch fixes the issue that when buffer allocation is requested
without iommu, the allocation is failed.

Without iommu, dma_alloc_attrs function allocates some memory region
and returns cpu address so this patch makes the cpu address to be set
to buf->kvaddr correctly.

Changelog v2:
- fix buffer free
  . Without iommu, dma_free_attrs function requires kernel space address
    as argument. So it changes the argument, buf->pages to buf->kvaddr.

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

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