From: Imre Deak <imre.deak@intel.com>
Date: Fri, 19 Apr 2013 01:11:56 +0000 (+1000)
Subject: drm: prime: fix refcounting on the dmabuf import error path
X-Git-Tag: omap-for-v3.10/dt-fixes-for-merge-window~55^2~9
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=011c2282c74db120f01a8414edc66c3f217f5511;p=pandora-kernel.git

drm: prime: fix refcounting on the dmabuf import error path

In commit be8a42ae60 we inroduced a refcount problem, where on the
drm_gem_prime_fd_to_handle() error path we'll call dma_buf_put() for
self imported dma buffers.

Fix this by taking a reference on the dma buffer in the .gem_import
hook instead of assuming the caller had taken one. Besides fixing the
bug this is also more logical.

Signed-off-by: Imre Deak <imre.deak@intel.com>
Cc: stable@vger.kernel.org
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Dave Airlie <airlied@redhat.com>
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