diff options
| author | Alex Deucher <alexander.deucher@amd.com> | 2015-03-02 20:45:24 -0500 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2015-03-03 17:28:29 -0500 |
| commit | cffefd9bb31cd35ab745d3b49005d10616d25bdc (patch) | |
| tree | d8bd408ffae38efc7dfa958ecd802f87e573cf25 | |
| parent | 0586915ec10d0ae60de5cd3381ad25a704760402 (diff) | |
drm/radeon: do a posting read in cik_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/cik.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/gpu/drm/radeon/cik.c b/drivers/gpu/drm/radeon/cik.c index 0c993da9c8f..3e670d344a2 100644 --- a/drivers/gpu/drm/radeon/cik.c +++ b/drivers/gpu/drm/radeon/cik.c @@ -7555,6 +7555,9 @@ int cik_irq_set(struct radeon_device *rdev) WREG32(DC_HPD5_INT_CONTROL, hpd5); WREG32(DC_HPD6_INT_CONTROL, hpd6); + /* posting read */ + RREG32(SRBM_STATUS); + return 0; } |