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| author | Alex Deucher <alexander.deucher@amd.com> | 2015-03-02 20:43:53 -0500 |
|---|---|---|
| committer | Jiri Slaby <jslaby@suse.cz> | 2015-04-09 13:13:58 +0200 |
| commit | 5e61943443e25142b557550bbbf619c229ae5641 (patch) | |
| tree | 9f0fe3193830255397f12281d8adb115382609ae | |
| parent | 4ca1ac7997dbc13b8de4448f9e7e7b6d07cac3fa (diff) | |
| download | lwn-5e61943443e25142b557550bbbf619c229ae5641.tar.gz lwn-5e61943443e25142b557550bbbf619c229ae5641.zip | |
drm/radeon: do a posting read in si_set_irq
commit 0586915ec10d0ae60de5cd3381ad25a704760402 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: Jiri Slaby <jslaby@suse.cz>
| -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 50482e763d80..6301b3638bb4 100644 --- a/drivers/gpu/drm/radeon/si.c +++ b/drivers/gpu/drm/radeon/si.c @@ -5901,6 +5901,9 @@ int si_irq_set(struct radeon_device *rdev) WREG32(CG_THERMAL_INT, thermal_int); + /* posting read */ + RREG32(SRBM_STATUS); + return 0; } |