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| author | Alex Deucher <alexander.deucher@amd.com> | 2015-03-02 20:41:31 -0500 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-03-26 15:00:57 +0100 |
| commit | 96e612822a99f6a19f2a5a9e3405da7123a762d6 (patch) | |
| tree | 0bec6b897a712e8aa60d83978fa84a45392c6dca /drivers | |
| parent | a02db0f24cda0f97d9c101df3eafa7ccfc88452e (diff) | |
| download | lwn-96e612822a99f6a19f2a5a9e3405da7123a762d6.tar.gz lwn-96e612822a99f6a19f2a5a9e3405da7123a762d6.zip | |
drm/radeon: do a posting read in r600_set_irq
commit 9d1393f23d5656cdd5f368efd60694d4aeed81d3 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/r600.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/gpu/drm/radeon/r600.c b/drivers/gpu/drm/radeon/r600.c index 4cf21ec1abe3..90b007594e32 100644 --- a/drivers/gpu/drm/radeon/r600.c +++ b/drivers/gpu/drm/radeon/r600.c @@ -3459,6 +3459,9 @@ int r600_init(struct radeon_device *rdev) rdev->accel_working = false; } + /* posting read */ + RREG32(R_000E50_SRBM_STATUS); + return 0; } |