From: Michel Dänzer <michel.daenzer@amd.com>
Date: Fri, 19 Sep 2014 03:07:11 +0000 (+0900)
Subject: drm/radeon: Clear RB_OVERFLOW bit earlier
X-Git-Tag: fixes-for-v3.18-merge-window~71^2^2~6
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=11bab0ae9991b165b542294806013d1e06fb3294;p=pandora-kernel.git

drm/radeon: Clear RB_OVERFLOW bit earlier

Otherwise the bit remains set in rdev->ih.rptr, so the wptr can never
match that and we still have an infinite loop.

This fix allows me to successfully recover from an IH ring buffer
overflow.

Signed-off-by: Michel Dänzer <michel.daenzer@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---

Reading git-diff-tree failed