drm/radeon: do a posting read in si_set_irq
authorAlex Deucher <alexander.deucher@amd.com>
Tue, 3 Mar 2015 01:43:53 +0000 (20:43 -0500)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Thu, 26 Mar 2015 14:00:57 +0000 (15:00 +0100)
commit693fcdbda7ecc657abb6e83d306c7c43c4b766bc
tree95f13c98bd7307fa68b13eaf7e26bf444df24f64
parent96e612822a99f6a19f2a5a9e3405da7123a762d6
drm/radeon: do a posting read in si_set_irq

commit 0586915ec10d0ae60de5cd3381ad25a704760402 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: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/gpu/drm/radeon/si.c