diff options
| author | Alex Deucher <alexander.deucher@amd.com> | 2015-03-02 20:41:31 -0500 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2015-03-03 17:28:27 -0500 |
| commit | 9d1393f23d5656cdd5f368efd60694d4aeed81d3 (patch) | |
| tree | af0a06a0f71032a7b1eb732f198b750f78c112d3 /drivers/gpu/drm/radeon/r600.c | |
| parent | 54acf107e4e66d1f4a697e08a7f60dba9fcf07c3 (diff) | |
| download | lwn-9d1393f23d5656cdd5f368efd60694d4aeed81d3.tar.gz lwn-9d1393f23d5656cdd5f368efd60694d4aeed81d3.zip | |
drm/radeon: do a posting read in r600_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
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 07a71a2488c9..2fcad344492f 100644 --- a/drivers/gpu/drm/radeon/r600.c +++ b/drivers/gpu/drm/radeon/r600.c @@ -3784,6 +3784,9 @@ int r600_irq_set(struct radeon_device *rdev) WREG32(RV770_CG_THERMAL_INT, thermal_int); } + /* posting read */ + RREG32(R_000E50_SRBM_STATUS); + return 0; } |