drm/radeon: do a posting read in rs600_set_irq
authorAlex Deucher <alexander.deucher@amd.com>
Tue, 3 Mar 2015 01:39:56 +0000 (20:39 -0500)
committerAlex Deucher <alexander.deucher@amd.com>
Tue, 3 Mar 2015 22:28:27 +0000 (17:28 -0500)
commit54acf107e4e66d1f4a697e08a7f60dba9fcf07c3
tree17a836dff118f24a537ed35fe172b1e0b4c2256d
parentf957063fee6392bb9365370db6db74dc0b2dce0a
drm/radeon: do a posting read in rs600_set_irq

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>
Cc: stable@vger.kernel.org
drivers/gpu/drm/radeon/rs600.c