[PATCH 3/5] drm/amdgpu: correct the audio function initial Dstate

[Lazar, Lijo]

On 6/3/2021 10:26 AM, Evan Quan wrote:
> On driver loading, the ASIC is in D0 state. The bundled
> audio function should be in the same state also.
> 
> Change-Id: I136e196be7633e95883a7f6c33963f7583e9bad1
> Signed-off-by: Evan Quan <evan.quan at amd.com>
> ---
>   drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c | 14 ++++++++++++++
>   1 file changed, 14 insertions(+)
> 
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
> index c354ffa62483..9d497b4f8e34 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
> @@ -137,6 +137,7 @@ int amdgpu_driver_load_kms(struct amdgpu_device *adev, unsigned long flags)
>   	struct drm_device *dev;
>   	struct pci_dev *parent;
>   	int r, acpi_status;
> +	struct pci_dev *p = NULL;
>   
>   	dev = adev_to_drm(adev);
>   
> @@ -212,9 +213,22 @@ int amdgpu_driver_load_kms(struct amdgpu_device *adev, unsigned long flags)
>   						DPM_FLAG_MAY_SKIP_RESUME);
>   		pm_runtime_use_autosuspend(dev->dev);
>   		pm_runtime_set_autosuspend_delay(dev->dev, 5000);
> +
>   		pm_runtime_allow(dev->dev);
> +
>   		pm_runtime_mark_last_busy(dev->dev);
>   		pm_runtime_put_autosuspend(dev->dev);
> +
> +		p = pci_get_domain_bus_and_slot(pci_domain_nr(adev->pdev->bus),
> +				adev->pdev->bus->number, 1);

For the sake of readability, it's better to wrap this as get_audio_dev 
or similar.

Thanks,
Lijo

> +		if (p) {
> +			pm_runtime_get_sync(&p->dev);
> +
> +			pm_runtime_mark_last_busy(&p->dev);
> +			pm_runtime_put_autosuspend(&p->dev);
> +
> +			pci_dev_put(p);
> +		}
>   	}
>   
>   	if (amdgpu_acpi_smart_shift_update(dev, AMDGPU_SS_DRV_LOAD))
>