On 9/23/26 21:33, Shahyan Soltani wrote:
> From: Pierre-Eric Pelloux-Prayer <[email protected]>
> 
> Submitting a cs ioctl will now wake up the GPU. The guard will
> automatically drop the rpm ref when the cs ioctl goes out of scope.
> 
> Signed-off-by: Pierre-Eric Pelloux-Prayer <[email protected]>
> Co-developed-by: Shahyan Soltani <[email protected]>
> Signed-off-by: Shahyan Soltani <[email protected]>

Reviewed-by: Christian König <[email protected]>

> ---
>  drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c | 7 +++++++
>  1 file changed, 7 insertions(+)
> 
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c 
> b/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
> index 87ccef153073..e2a715c04208 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
> @@ -29,6 +29,7 @@
>  #include <linux/pagemap.h>
>  #include <linux/sync_file.h>
>  #include <linux/dma-buf.h>
> +#include <linux/pm_runtime.h>
>  
>  #include <drm/amdgpu_drm.h>
>  #include <drm/drm_syncobj.h>
> @@ -1445,6 +1446,12 @@ int amdgpu_cs_ioctl(struct drm_device *dev, void 
> *data, struct drm_file *filp)
>       if (!adev->accel_working)
>               return -EBUSY;
>  
> +     PM_RUNTIME_ACQUIRE_IF_ENABLED_AUTOSUSPEND(dev->dev, lock);
> +
> +     r = PM_RUNTIME_ACQUIRE_ERR(&lock);
> +     if (r)
> +             return r;
> +
>       r = amdgpu_cs_parser_init(&parser, adev, filp, data);
>       if (r) {
>               drm_err_ratelimited(dev, "Failed to initialize parser %d!\n", 
> r);

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