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| author | Alex Deucher <alexander.deucher@amd.com> | 2024-11-22 11:24:38 -0500 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-12-14 20:03:29 +0100 |
| commit | e55d088edfcf4cbd7d40efd988edeeebd5023c57 (patch) | |
| tree | abf0e2a3d32be96a83f4e51377a732b31b63dc18 | |
| parent | 2e7bea50a9b78f66267eb7c4e0d11c6aaf3406a6 (diff) | |
| download | linux-e55d088edfcf4cbd7d40efd988edeeebd5023c57.tar.gz linux-e55d088edfcf4cbd7d40efd988edeeebd5023c57.tar.bz2 linux-e55d088edfcf4cbd7d40efd988edeeebd5023c57.zip | |
drm/amdgpu/hdp6.0: do a posting read when flushing HDP
commit abe1cbaec6cfe9fde609a15cd6a12c812282ce77 upstream.
Need to read back to make sure the write goes through.
Cc: David Belanger <david.belanger@amd.com>
Reviewed-by: Frank Min <frank.min@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/hdp_v6_0.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/hdp_v6_0.c b/drivers/gpu/drm/amd/amdgpu/hdp_v6_0.c index 33736d361dd0..6948fe9956ce 100644 --- a/drivers/gpu/drm/amd/amdgpu/hdp_v6_0.c +++ b/drivers/gpu/drm/amd/amdgpu/hdp_v6_0.c @@ -34,10 +34,12 @@ static void hdp_v6_0_flush_hdp(struct amdgpu_device *adev, struct amdgpu_ring *ring) { - if (!ring || !ring->funcs->emit_wreg) + if (!ring || !ring->funcs->emit_wreg) { WREG32((adev->rmmio_remap.reg_offset + KFD_MMIO_REMAP_HDP_MEM_FLUSH_CNTL) >> 2, 0); - else + RREG32((adev->rmmio_remap.reg_offset + KFD_MMIO_REMAP_HDP_MEM_FLUSH_CNTL) >> 2); + } else { amdgpu_ring_emit_wreg(ring, (adev->rmmio_remap.reg_offset + KFD_MMIO_REMAP_HDP_MEM_FLUSH_CNTL) >> 2, 0); + } } static void hdp_v6_0_update_clock_gating(struct amdgpu_device *adev, |