diff options
| author | Alex Deucher <alexander.deucher@amd.com> | 2015-03-02 20:45:24 -0500 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-03-26 13:59:37 +0100 |
| commit | 0691e0b58b653027ce2580ef4c4f7a42929333dc (patch) | |
| tree | 30e83ffcbd426f49349ed3fbb42291db4d5dcdb6 /drivers | |
| parent | 9a50805b75a288d22bf9830491c724909a700039 (diff) | |
drm/radeon: do a posting read in cik_set_irq
commit cffefd9bb31cd35ab745d3b49005d10616d25bdc 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/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 de9a56205f0a..53b9ac3f8121 100644 --- a/drivers/gpu/drm/radeon/cik.c +++ b/drivers/gpu/drm/radeon/cik.c @@ -7526,6 +7526,9 @@ 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; } |