diff options
| author | Alex Deucher <alexander.deucher@amd.com> | 2015-03-02 20:43:53 -0500 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-03-26 15:06:52 +0100 |
| commit | 85c5b0d3c4c9a9a724d058a4f8fc53e45e142c0a (patch) | |
| tree | 87be4b2db8c285aa5285a8e948a413780cbc5214 /drivers/gpu | |
| parent | 028e9163a3b794a67c21d8a1519a4a1ad80bec99 (diff) | |
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: Greg Kroah-Hartman <gregkh@linuxfoundation.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 52b64ad285d6..d21247e9fd10 100644 --- a/drivers/gpu/drm/radeon/si.c +++ b/drivers/gpu/drm/radeon/si.c @@ -5958,6 +5958,9 @@ int si_irq_set(struct radeon_device *rdev) WREG32(CG_THERMAL_INT, thermal_int); + /* posting read */ + RREG32(SRBM_STATUS); + return 0; } |