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| author | Alex Deucher <alexander.deucher@amd.com> | 2015-03-02 20:42:53 -0500 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2015-03-03 17:28:28 -0500 |
| commit | c320bb5f6dc0cb88a811cbaf839303e0a3916a92 (patch) | |
| tree | f4d2e8f05a3ead0a3aec7fa5808ab19260ae746c | |
| parent | 9d1393f23d5656cdd5f368efd60694d4aeed81d3 (diff) | |
| download | linux-qcom-c320bb5f6dc0cb88a811cbaf839303e0a3916a92.tar.gz | |
drm/radeon: do a posting read in evergreen_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
| -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 4c0e24b3bb902..973df064c14fe 100644 --- a/drivers/gpu/drm/radeon/evergreen.c +++ b/drivers/gpu/drm/radeon/evergreen.c @@ -4593,6 +4593,9 @@ 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; } |