diff options
| author | Alex Deucher <alexander.deucher@amd.com> | 2015-03-02 20:42:53 -0500 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-03-26 13:59:36 +0100 |
| commit | be89f21f8ceef2afcc85e21518649f5dbcf9568a (patch) | |
| tree | a8282f0c5b2d638f1ca414caf1dd5c6e43caf970 /drivers | |
| parent | 135d31d1f9790bb02fc3ddd0249036a465f21255 (diff) | |
drm/radeon: do a posting read in evergreen_set_irq
commit c320bb5f6dc0cb88a811cbaf839303e0a3916a92 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')
| -rw-r--r-- | drivers/gpu/drm/radeon/evergreen.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/gpu/drm/radeon/evergreen.c b/drivers/gpu/drm/radeon/evergreen.c index 85995b4e3338..c674f63d7f14 100644 --- a/drivers/gpu/drm/radeon/evergreen.c +++ b/drivers/gpu/drm/radeon/evergreen.c @@ -4589,6 +4589,9 @@ int evergreen_irq_set(struct radeon_device *rdev) WREG32(AFMT_AUDIO_PACKET_CONTROL + EVERGREEN_CRTC4_REGISTER_OFFSET, afmt5); WREG32(AFMT_AUDIO_PACKET_CONTROL + EVERGREEN_CRTC5_REGISTER_OFFSET, afmt6); + /* posting read */ + RREG32(SRBM_STATUS); + return 0; } |