[PATCH] drm/amdgpu: Skip put_reset_domain if it doesnt exist

[Christian König]

Am 28.09.22 um 20:22 schrieb Vignesh Chander:
> For xgmi sriov, the reset is handled by host driver and hive->reset_domain
> is not initialized so need to check if it exists before doing a put.

Once more: General practice is to make the *_put_*() functions NULL 
tolerant.

So rather make this than this patch here.

Regards,
Christian.

> Signed-off-by: Vignesh Chander <Vignesh.Chander at amd.com>
> ---
>   drivers/gpu/drm/amd/amdgpu/amdgpu_xgmi.c | 3 ++-
>   1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_xgmi.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_xgmi.c
> index 47159e9a0884..80fb6ef929e5 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_xgmi.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_xgmi.c
> @@ -217,7 +217,8 @@ static void amdgpu_xgmi_hive_release(struct kobject *kobj)
>   	struct amdgpu_hive_info *hive = container_of(
>   		kobj, struct amdgpu_hive_info, kobj);
>   
> -	amdgpu_reset_put_reset_domain(hive->reset_domain);
> +	if (hive->reset_domain)
> +		amdgpu_reset_put_reset_domain(hive->reset_domain);
>   	hive->reset_domain = NULL;
>   
>   	mutex_destroy(&hive->hive_lock);