Re: [PATCH v5 2/2] media: hantro: use DEFINE_RUNTIME_DEV_PM_OPS

On Wed, Jul 29, 2026 at 06:04:40AM +0000, Tharit Tangkijwanichakul wrote:
> The runtime suspend and resume callbacks are currently guarded by
> CONFIG_PM. Removing the guard directly would leave the callbacks unused
> when CONFIG_PM is disabled.
>
> Define the PM operations with DEFINE_RUNTIME_DEV_PM_OPS() and use
> pm_ptr() when assigning them to the platform driver. This keeps the PM
> callbacks available when needed while avoiding unused-function warnings
> for CONFIG_PM=n builds.
>
> Signed-off-by: Tharit Tangkijwanichakul <[email protected]>
> ---

Reviewed-by: Frank Li <[email protected]>

>  drivers/media/platform/verisilicon/hantro_drv.c | 11 +++--------
>  1 file changed, 3 insertions(+), 8 deletions(-)
>
> diff --git a/drivers/media/platform/verisilicon/hantro_drv.c b/drivers/media/platform/verisilicon/hantro_drv.c
> index d6fcd4f7f9da..35302cf9f233 100644
> --- a/drivers/media/platform/verisilicon/hantro_drv.c
> +++ b/drivers/media/platform/verisilicon/hantro_drv.c
> @@ -1284,7 +1284,6 @@ static void hantro_remove(struct platform_device *pdev)
>  	pm_runtime_disable(vpu->dev);
>  }
>
> -#ifdef CONFIG_PM
>  static int hantro_runtime_resume(struct device *dev)
>  {
>  	struct hantro_dev *vpu = dev_get_drvdata(dev);
> @@ -1314,13 +1313,9 @@ static int hantro_runtime_suspend(struct device *dev)
>  	clk_bulk_disable(vpu->variant->num_clocks, vpu->clocks);
>  	return 0;
>  }
> -#endif
>
> -static const struct dev_pm_ops hantro_pm_ops = {
> -	SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
> -				pm_runtime_force_resume)
> -	SET_RUNTIME_PM_OPS(hantro_runtime_suspend, hantro_runtime_resume, NULL)
> -};
> +static DEFINE_RUNTIME_DEV_PM_OPS(hantro_pm_ops, hantro_runtime_suspend,
> +				hantro_runtime_resume, NULL);
>
>  static struct platform_driver hantro_driver = {
>  	.probe = hantro_probe,
> @@ -1328,7 +1323,7 @@ static struct platform_driver hantro_driver = {
>  	.driver = {
>  		   .name = DRIVER_NAME,
>  		   .of_match_table = of_hantro_match,
> -		   .pm = &hantro_pm_ops,
> +		   .pm = pm_ptr(&hantro_pm_ops),
>  	},
>  };
>  module_platform_driver(hantro_driver);
> --
> 2.47.3
>