From: Jerome Glisse <jglisse@redhat.com>
Date: Mon, 17 Dec 2012 16:04:32 +0000 (-0500)
Subject: drm/radeon: avoid deadlock in pm path when waiting for fence
X-Git-Tag: v3.8-rc2~13^2~8^2~3
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=5f8f635edd8ad5a6416bff4c5ff486500357f473;p=pandora-kernel.git

drm/radeon: avoid deadlock in pm path when waiting for fence

radeon_fence_wait_empty_locked should not trigger GPU reset as no
place where it's call from would benefit from such thing and it
actually lead to a kernel deadlock in case the reset is triggered
from pm codepath. Instead force ring completion in place where it
makes sense or return early in others.

Signed-off-by: Jerome Glisse <jglisse@redhat.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
---

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