On 2019-10-01 1:16 p.m., Gustavo A. R. Silva wrote:
> Notice that there is a *continue* statement in the middle of the
> for loop and that prevents the code below from ever being reached:
>
> r = amdgpu_ring_test_ring(ring);
> if (r) {
> ring->sched.ready = false;
> goto done;
> }
>
> Fix this by removing the continue statement and updating ring->sched.ready
> to true before calling amdgpu_ring_test_ring(ring).
>
> Notice that this fix is based on
> commit 1b61de45dfaf ("drm/amdgpu: add initial VCN2.0 support (v2)")
>
> Addresses-Coverity-ID 1485608 ("Structurally dead code")
> Fixes: 28c17d72072b ("drm/amdgpu: add VCN2.5 basic supports")
> Signed-off-by: Gustavo A. R. Silva <gustavo@xxxxxxxxxxxxxx>
> ---
>
> Any feedback is greatly appreciated.
>
> drivers/gpu/drm/amd/amdgpu/vcn_v2_5.c | 5 +++--
> 1 file changed, 3 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/vcn_v2_5.c b/drivers/gpu/drm/amd/amdgpu/vcn_v2_5.c
> index 395c2259f979..47b0dcd59e13 100644
> --- a/drivers/gpu/drm/amd/amdgpu/vcn_v2_5.c
> +++ b/drivers/gpu/drm/amd/amdgpu/vcn_v2_5.c
> @@ -258,6 +258,7 @@ static int vcn_v2_5_hw_init(void *handle)
> adev->nbio_funcs->vcn_doorbell_range(adev, ring->use_doorbell,
> ring->doorbell_index, j);
>
> + ring->sched.ready = true;
This is redundant. all the sched->ready is initialized as true, please
refer to drm_sched_init()
> r = amdgpu_ring_test_ring(ring);
> if (r) {
> ring->sched.ready = false;
> @@ -266,8 +267,7 @@ static int vcn_v2_5_hw_init(void *handle)
>
> for (i = 0; i < adev->vcn.num_enc_rings; ++i) {
> ring = &adev->vcn.inst[j].ring_enc[i];
> - ring->sched.ready = false;
> - continue;
> + ring->sched.ready = true;
Because the VCN 2.5 FW still has issue for encode, so we have it
disabled here.
Regards,
Leo
> r = amdgpu_ring_test_ring(ring);
> if (r) {
> ring->sched.ready = false;
> @@ -276,6 +276,7 @@ static int vcn_v2_5_hw_init(void *handle)
> }
>
> ring = &adev->vcn.inst[j].ring_jpeg;
> + ring->sched.ready = true;
> r = amdgpu_ring_test_ring(ring);
> if (r) {
> ring->sched.ready = false;
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