[PATCH] drm/amdgpu: limit the number of enabled gfx queues

[Lang Yu]

ping.

On 07/14/ , Lang Yu wrote:
> The driver can only support AMDGPU_MAX_GFX_RINGS gfx queues
> at the moment. Once enabled gfx queues exceed the limit,
> we will run into problems when setting up gfx rings in
> gfx_xxx_sw_init().
> 
> Signed-off-by: Lang Yu <Lang.Yu at amd.com>
> ---
>  drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c | 5 +++--
>  1 file changed, 3 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c
> index 222d3d7ea076..ae3fe1d0df04 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c
> @@ -229,8 +229,9 @@ void amdgpu_gfx_graphics_queue_acquire(struct amdgpu_device *adev)
>  {
>  	int i, queue, pipe;
>  	bool multipipe_policy = amdgpu_gfx_is_graphics_multipipe_capable(adev);
> -	int max_queues_per_me = adev->gfx.me.num_pipe_per_me *
> -					adev->gfx.me.num_queue_per_pipe;
> +	int max_queues_per_me = min(adev->gfx.me.num_pipe_per_me *
> +				    adev->gfx.me.num_queue_per_pipe,
> +				    adev->gfx.num_gfx_rings);
>  
>  	if (multipipe_policy) {
>  		/* policy: amdgpu owns the first queue per pipe at this stage
> -- 
> 2.25.1
>