Am 05.03.2014 23:03, schrieb Alex Deucher:
When selecting the engine, return an error if the GPU doesn't have UVD.
Why exactly is that needed? If UVD isn't present the ring should be active, so we should fail the same way just a little bit later. Additional to that userspace should check before submitting a job if UVD is available or not.
Christian.
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx> Cc: stable@xxxxxxxxxxxxxxx --- drivers/gpu/drm/radeon/radeon_cs.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/radeon/radeon_cs.c b/drivers/gpu/drm/radeon/radeon_cs.c index dfb5a1d..fa7839b 100644 --- a/drivers/gpu/drm/radeon/radeon_cs.c +++ b/drivers/gpu/drm/radeon/radeon_cs.c @@ -145,7 +145,10 @@ static int radeon_cs_get_ring(struct radeon_cs_parser *p, u32 ring, s32 priority } break; case RADEON_CS_RING_UVD: - p->ring = R600_RING_TYPE_UVD_INDEX; + if (p->rdev->has_uvd) + p->ring = R600_RING_TYPE_UVD_INDEX; + else + return -EINVAL; break; } return 0;
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