drm/amdgpu: return -ENOENT from uvd 6.0 early init for harvesting

Fixes init failures on polaris cards with harvested UVD.

Signed-off-by: Leo Liu <leo.liu@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org

1 files changed, 4 insertions, 0 deletions

diff --git a/drivers/gpu/drm/amd/amdgpu/uvd_v6_0.c b/drivers/gpu/drm/amd/amdgpu/uvd_v6_0.c
index 430a6b4dfac9..62cd16a23921 100644
--- a/drivers/gpu/drm/amd/amdgpu/uvd_v6_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/uvd_v6_0.c
@@ -93,6 +93,10 @@ static int uvd_v6_0_early_init(void *handle)
 {
         struct amdgpu_device *adev = (struct amdgpu_device *)handle;
 
+        if (!(adev->flags & AMD_IS_APU) &&
+            (RREG32_SMC(ixCC_HARVEST_FUSES) & CC_HARVEST_FUSES__UVD_DISABLE_MASK))
+                return -ENOENT;
+
         uvd_v6_0_set_ring_funcs(adev);
         uvd_v6_0_set_irq_funcs(adev);