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

commit cb4b02d7cac56a69d8137d8d843507cca9182aed upstream.

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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/gpu/drm/amd/amdgpu/uvd_v6_0.c b/drivers/gpu/drm/amd/amdgpu/uvd_v6_0.c
index ab3df6d..3f445df 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/uvd_v6_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/uvd_v6_0.c
@@ -89,6 +89,10 @@ 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);