Re: [PATCH] drm/amdgpu: Add missing pm_runtime_put_autosuspend

["Lazar, Lijo" <lijo.lazar@xxxxxxx>]

On 1/18/2022 5:31 PM, Yongzhi Liu wrote:
> pm_runtime_get_sync() increments the runtime PM usage counter even
> when it returns an error code, thus a matching decrement is needed
> on the error handling path to keep the counter balanced.
>
> Signed-off-by: Yongzhi Liu <lyz_cs@xxxxxxxxxx>

Thanks!

Reviewed-by: Lijo Lazar <lijo.lazar@xxxxxxx>

> ---
>   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c | 4 +++-
>   1 file changed, 3 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c
> index 9aea1cc..4b950de 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c
> @@ -1120,8 +1120,10 @@ static ssize_t amdgpu_debugfs_gfxoff_read(struct file *f, char __user *buf,
>   		return -EINVAL;
>   
>   	r = pm_runtime_get_sync(adev_to_drm(adev)->dev);
> -	if (r < 0)
> +	if (r < 0) {
> +		pm_runtime_put_autosuspend(adev_to_drm(adev)->dev);
>   		return r;
> +	}
>   
>   	while (size) {
>   		uint32_t value;