From: Thierry Reding <thierry.reding@avionic-design.de>
Date: Sat, 20 Oct 2012 10:32:47 +0000 (+0000)
Subject: drm: fb: cma: Fail gracefully on allocation failure
X-Git-Tag: v3.7-rc3~45^2~4
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=028132451667ffd25b6814d47a622ec03cb8cba7;p=pandora-kernel.git

drm: fb: cma: Fail gracefully on allocation failure

The drm_gem_cma_create() function never returns NULL but rather an error
encoded in the return value using the ERR_PTR() macro. Callers therefore
need to check for errors using the IS_ERR() macro. This change allows
drivers to handle contiguous DMA allocation failures gracefully.

Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Dave Airlie <airlied@redhat.com>
---

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