diff options
| author | Alex Deucher <alexander.deucher@amd.com> | 2015-03-02 20:41:31 -0500 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-03-26 15:06:51 +0100 |
| commit | 82e7798ff40b5b9a6723092c4314c23a49362115 (patch) | |
| tree | aeb02fe70d0a4cedbd27950313080369acc1b8d6 /drivers/gpu/drm/radeon/r600.c | |
| parent | 36358b3f64dab4e9372a520901a7636cf6e01a1e (diff) | |
drm/radeon: do a posting read in r600_set_irq
commit 9d1393f23d5656cdd5f368efd60694d4aeed81d3 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>
Diffstat (limited to 'drivers/gpu/drm/radeon/r600.c')
| -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 788f602e8989..74a8a38db4d5 100644 --- a/drivers/gpu/drm/radeon/r600.c +++ b/drivers/gpu/drm/radeon/r600.c @@ -3647,6 +3647,9 @@ int r600_irq_set(struct radeon_device *rdev) WREG32(RV770_CG_THERMAL_INT, thermal_int); } + /* posting read */ + RREG32(R_000E50_SRBM_STATUS); + return 0; } |