diff options
| author | Alex Deucher <alexander.deucher@amd.com> | 2015-03-02 20:41:31 -0500 |
|---|---|---|
| committer | Sasha Levin <sasha.levin@oracle.com> | 2015-03-28 09:23:21 -0400 |
| commit | a5f1220ce4120b18c72183908c30d3588442002a (patch) | |
| tree | 6f85933e8ef7a5c7255f8bc0affbe78e0262e636 /drivers/gpu/drm | |
| parent | 226c62843fd105aab30f901182eca7ec39dcb683 (diff) | |
drm/radeon: do a posting read in r600_set_irq
[ Upstream commit 9d1393f23d5656cdd5f368efd60694d4aeed81d3 ]
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
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
Diffstat (limited to 'drivers/gpu/drm')
| -rw-r--r-- | drivers/gpu/drm/radeon/r600.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/gpu/drm/radeon/r600.c b/drivers/gpu/drm/radeon/r600.c index 56b02927cd3d..ee0868dec2f4 100644 --- a/drivers/gpu/drm/radeon/r600.c +++ b/drivers/gpu/drm/radeon/r600.c @@ -3787,6 +3787,9 @@ int r600_irq_set(struct radeon_device *rdev) WREG32(RV770_CG_THERMAL_INT, thermal_int); } + /* posting read */ + RREG32(R_000E50_SRBM_STATUS); + return 0; } |