diff options
| author | Alex Deucher <alexander.deucher@amd.com> | 2015-03-02 20:43:53 -0500 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2015-03-03 17:28:29 -0500 |
| commit | 0586915ec10d0ae60de5cd3381ad25a704760402 (patch) | |
| tree | 9c26c25c4633a8babca899366cfa5c9086e009bd /drivers/gpu | |
| parent | c320bb5f6dc0cb88a811cbaf839303e0a3916a92 (diff) | |
| download | linux-0586915ec10d0ae60de5cd3381ad25a704760402.tar.gz linux-0586915ec10d0ae60de5cd3381ad25a704760402.tar.bz2 linux-0586915ec10d0ae60de5cd3381ad25a704760402.zip | |
drm/radeon: do a posting read in si_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')
| -rw-r--r-- | drivers/gpu/drm/radeon/si.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/gpu/drm/radeon/si.c b/drivers/gpu/drm/radeon/si.c index bcf516a8a2f1..e088e5558da0 100644 --- a/drivers/gpu/drm/radeon/si.c +++ b/drivers/gpu/drm/radeon/si.c @@ -6203,6 +6203,9 @@ int si_irq_set(struct radeon_device *rdev) WREG32(CG_THERMAL_INT, thermal_int); + /* posting read */ + RREG32(SRBM_STATUS); + return 0; } |