drm/radeon/kms: fix MSI re-arm on rv370+
authorAlex Deucher <alexander.deucher@amd.com>
Mon, 13 Feb 2012 21:36:34 +0000 (16:36 -0500)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Thu, 1 Mar 2012 00:30:50 +0000 (16:30 -0800)
commit74d54f57ce5ae36b8e74cab2a349edb614f1b5cb
tree5d9e477c6931e2a04337bfb37c0442e32dbb6704
parent4f89dcb180bf8f614410c8fd9cb2ab1d951155b1
drm/radeon/kms: fix MSI re-arm on rv370+

commit b7f5b7dec3d539a84734f2bcb7e53fbb1532a40b upstream.

MSI_REARM_EN register is a write only trigger register.
There is no need RMW when re-arming.

May fix:
https://bugs.freedesktop.org/show_bug.cgi?id=41668

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/gpu/drm/radeon/r100.c
drivers/gpu/drm/radeon/rs600.c