[PATCH] drm/amdgpu: use first uvd instance to avoid clang build error

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On 2018-06-17 04:52 AM, Stefan Agner wrote:
> Explicitly use the first uvd instance to avoid a build error when
> using clang 6:
> drivers/gpu/drm/amd/amdgpu/amdgpu_uvd.c:1148:52: error: expected ')'
>                  container_of(work, struct amdgpu_device, uvd.inst->idle_work.work);
>                                                                   ^
> drivers/gpu/drm/amd/amdgpu/amdgpu_uvd.c:1148:3: note: to match this '('
>                  container_of(work, struct amdgpu_device, uvd.inst->idle_work.work);
>                  ^
> ./include/linux/kernel.h:967:21: note: expanded from macro 'container_of'
>          ((type *)(__mptr - offsetof(type, member))); })
>                             ^
> ./include/linux/stddef.h:17:32: note: expanded from macro 'offsetof'
>                                  ^
> ./include/linux/compiler-gcc.h:170:20: note: expanded from macro
>        '__compiler_offsetof'
>          __builtin_offsetof(a, b)
>                            ^
> drivers/gpu/drm/amd/amdgpu/amdgpu_uvd.c:1147:24: error: initializing
>        'struct amdgpu_device *' with an expression of incompatible type 'void'
>          struct amdgpu_device *adev =
>                                ^
> 2 errors generated.
>
> Fixes: 10dd74eac4db ("drm/amdgpu/vg20:Restruct uvd.inst to support multiple instances")
> Cc: James Zhu <James.Zhu at amd.com>
> Signed-off-by: Stefan Agner <stefan at agner.ch>
> ---
>   drivers/gpu/drm/amd/amdgpu/amdgpu_uvd.c | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_uvd.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_uvd.c
> index bcf68f80bbf0..6666a5888c44 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_uvd.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_uvd.c
> @@ -1145,7 +1145,7 @@ int amdgpu_uvd_get_destroy_msg(struct amdgpu_ring *ring, uint32_t handle,
>   static void amdgpu_uvd_idle_work_handler(struct work_struct *work)
>   {
>   	struct amdgpu_device *adev =
> -		container_of(work, struct amdgpu_device, uvd.inst->idle_work.work);
> +		container_of(work, struct amdgpu_device, uvd.inst[0].idle_work.work);
Hi Alex,
If all instances share one idle work from hardware view currently and in 
the future ,
should we move struct delayed_work idle_work from struct amdgpu_uvd_inst 
to struct amdgpu_uvd?
James
>   	unsigned fences = 0, i, j;
>   
>   	for (i = 0; i < adev->uvd.num_uvd_inst; ++i) {



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