[PATCH] drm/amdgpu: fix some uninitialized variables

[Christian König]

Am 24.04.24 um 03:19 schrieb Jesse Zhang:
> Fix some variables not initialized before use.
> Scan them out using Synopsys tools.
>
> Signed-off-by: Jesse Zhang <Jesse.Zhang at amd.com>
> ---
>   drivers/gpu/drm/amd/amdgpu/amdgpu_vce.c | 2 +-
>   drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c | 5 +++++
>   drivers/gpu/drm/amd/amdgpu/atom.c       | 1 +
>   drivers/gpu/drm/amd/amdgpu/sdma_v5_0.c  | 3 ++-
>   drivers/gpu/drm/amd/amdgpu/sdma_v5_2.c  | 3 ++-
>   drivers/gpu/drm/amd/amdgpu/sdma_v6_0.c  | 3 ++-
>   6 files changed, 13 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vce.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vce.c
> index 59acf424a078..60d97cd14855 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vce.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vce.c
> @@ -742,7 +742,7 @@ int amdgpu_vce_ring_parse_cs(struct amdgpu_cs_parser *p,
>   	uint32_t destroyed = 0;
>   	uint32_t created = 0;
>   	uint32_t allocated = 0;
> -	uint32_t tmp, handle = 0;
> +	uint32_t tmp = 0, handle = 0;

As far as I can see that isn't correct. tmp isn't used before it is written.

Is the tool maybe broken?

Regards,
Christian.

>   	uint32_t *size = &tmp;
>   	unsigned int idx;
>   	int i, r = 0;
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c
> index 677eb141554e..13125ddd5e86 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c
> @@ -410,6 +410,11 @@ static void amdgpu_vcn_idle_work_handler(struct work_struct *work)
>   			else
>   				new_state.fw_based = VCN_DPG_STATE__UNPAUSE;
>   
> +			if (amdgpu_fence_count_emitted(adev->jpeg.inst->ring_dec))
> +				new_state.jpeg = VCN_DPG_STATE__PAUSE;
> +			else
> +				new_state.jpeg = VCN_DPG_STATE__UNPAUSE;
> +
>   			adev->vcn.pause_dpg_mode(adev, j, &new_state);
>   		}
>   
> diff --git a/drivers/gpu/drm/amd/amdgpu/atom.c b/drivers/gpu/drm/amd/amdgpu/atom.c
> index 72362df352f6..d552e013354c 100644
> --- a/drivers/gpu/drm/amd/amdgpu/atom.c
> +++ b/drivers/gpu/drm/amd/amdgpu/atom.c
> @@ -1243,6 +1243,7 @@ static int amdgpu_atom_execute_table_locked(struct atom_context *ctx, int index,
>   	ectx.ps_size = params_size;
>   	ectx.abort = false;
>   	ectx.last_jump = 0;
> +	ectx.last_jump_jiffies = 0;
>   	if (ws) {
>   		ectx.ws = kcalloc(4, ws, GFP_KERNEL);
>   		ectx.ws_size = ws;
> diff --git a/drivers/gpu/drm/amd/amdgpu/sdma_v5_0.c b/drivers/gpu/drm/amd/amdgpu/sdma_v5_0.c
> index 45a2d0a5a2d7..b7d33d78bce0 100644
> --- a/drivers/gpu/drm/amd/amdgpu/sdma_v5_0.c
> +++ b/drivers/gpu/drm/amd/amdgpu/sdma_v5_0.c
> @@ -999,7 +999,8 @@ static int sdma_v5_0_ring_test_ring(struct amdgpu_ring *ring)
>   	r = amdgpu_ring_alloc(ring, 20);
>   	if (r) {
>   		DRM_ERROR("amdgpu: dma failed to lock ring %d (%d).\n", ring->idx, r);
> -		amdgpu_device_wb_free(adev, index);
> +		if (!ring->is_mes_queue)
> +			amdgpu_device_wb_free(adev, index);
>   		return r;
>   	}
>   
> diff --git a/drivers/gpu/drm/amd/amdgpu/sdma_v5_2.c b/drivers/gpu/drm/amd/amdgpu/sdma_v5_2.c
> index 43e64b2da575..cc9e961f0078 100644
> --- a/drivers/gpu/drm/amd/amdgpu/sdma_v5_2.c
> +++ b/drivers/gpu/drm/amd/amdgpu/sdma_v5_2.c
> @@ -839,7 +839,8 @@ static int sdma_v5_2_ring_test_ring(struct amdgpu_ring *ring)
>   	r = amdgpu_ring_alloc(ring, 20);
>   	if (r) {
>   		DRM_ERROR("amdgpu: dma failed to lock ring %d (%d).\n", ring->idx, r);
> -		amdgpu_device_wb_free(adev, index);
> +		if (!ring->is_mes_queue)
> +			amdgpu_device_wb_free(adev, index);
>   		return r;
>   	}
>   
> diff --git a/drivers/gpu/drm/amd/amdgpu/sdma_v6_0.c b/drivers/gpu/drm/amd/amdgpu/sdma_v6_0.c
> index 1f4877195213..c833b6b8373b 100644
> --- a/drivers/gpu/drm/amd/amdgpu/sdma_v6_0.c
> +++ b/drivers/gpu/drm/amd/amdgpu/sdma_v6_0.c
> @@ -861,7 +861,8 @@ static int sdma_v6_0_ring_test_ring(struct amdgpu_ring *ring)
>   	r = amdgpu_ring_alloc(ring, 5);
>   	if (r) {
>   		DRM_ERROR("amdgpu: dma failed to lock ring %d (%d).\n", ring->idx, r);
> -		amdgpu_device_wb_free(adev, index);
> +		if (!ring->is_mes_queue)
> +			amdgpu_device_wb_free(adev, index);
>   		return r;
>   	}
>