From: Alex Deucher <alexander.deucher@amd.com>
Date: Tue, 3 Mar 2015 01:36:26 +0000 (-0500)
Subject: drm/radeon: do a posting read in r100_set_irq
X-Git-Tag: v3.2.69~143
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=cc0c7ba9a7861350f727650f89b359bb995adfc7;p=pandora-kernel.git

drm/radeon: do a posting read in r100_set_irq

commit f957063fee6392bb9365370db6db74dc0b2dce0a upstream.

To make sure the writes go through the pci bridge.

bug:
https://bugzilla.kernel.org/show_bug.cgi?id=90741

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
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