diff options
| author | Lang Yu <Lang.Yu@amd.com> | 2024-03-25 08:24:31 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-04-17 12:23:38 +0300 |
| commit | de20c0d88b9513b43035a135711ab017fd1408e2 (patch) | |
| tree | 80f7c62254f364c8a40442fdda1e38cef9eb24b8 | |
| parent | 2ce20f2d430c053fcdd7a0761d758819bd15cdcd (diff) | |
| download | linux-de20c0d88b9513b43035a135711ab017fd1408e2.tar.xz | |
drm/amdgpu/umsch: reinitialize write pointer in hw init
commit 0f1bbcc2bab25d5fb2dfb1ee3e08131437690d3d upstream.
Otherwise the old one will be used during GPU reset.
That's not expected.
Signed-off-by: Lang Yu <Lang.Yu@amd.com>
Reviewed-by: Feifei Xu <Feifei.Xu@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/umsch_mm_v4_0.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/umsch_mm_v4_0.c b/drivers/gpu/drm/amd/amdgpu/umsch_mm_v4_0.c index 8e7b763cfdb7..fd23cd348552 100644 --- a/drivers/gpu/drm/amd/amdgpu/umsch_mm_v4_0.c +++ b/drivers/gpu/drm/amd/amdgpu/umsch_mm_v4_0.c @@ -225,6 +225,8 @@ static int umsch_mm_v4_0_ring_start(struct amdgpu_umsch_mm *umsch) WREG32_SOC15(VCN, 0, regVCN_UMSCH_RB_SIZE, ring->ring_size); + ring->wptr = 0; + data = RREG32_SOC15(VCN, 0, regVCN_RB_ENABLE); data &= ~(VCN_RB_ENABLE__AUDIO_RB_EN_MASK); WREG32_SOC15(VCN, 0, regVCN_RB_ENABLE, data); |