diff options
| author | Alex Deucher <alexander.deucher@amd.com> | 2015-03-02 20:43:53 -0500 |
|---|---|---|
| committer | Sasha Levin <sasha.levin@oracle.com> | 2015-03-28 09:23:36 -0400 |
| commit | 030b28dca1deb116c759d7bec65541a14522e3df (patch) | |
| tree | 9d0bfd9edae89c25dcdfe1c097b0afff4df4720d /drivers/gpu/drm/radeon/si.c | |
| parent | 09e605b31431b59a09c4e8ca3150590b929b2ed5 (diff) | |
drm/radeon: do a posting read in si_set_irq
[ Upstream commit 0586915ec10d0ae60de5cd3381ad25a704760402 ]
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/radeon/si.c')
| -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 7d5083dc4acb..35ce05c78c4d 100644 --- a/drivers/gpu/drm/radeon/si.c +++ b/drivers/gpu/drm/radeon/si.c @@ -6192,6 +6192,9 @@ int si_irq_set(struct radeon_device *rdev) WREG32(CG_THERMAL_INT, thermal_int); + /* posting read */ + RREG32(SRBM_STATUS); + return 0; } |