Re: [PATCH v2 2/2] dmaengine: tegra210-adma: update system sleep callbacks

[Jon Hunter <jonathanh@nvidia.com>]

On 13/03/2019 05:43, Sameer Pujar wrote:
> If the driver is active till late suspend, where runtime PM cannot run,
> force suspend is essential in such case to put the device in low power
> state. Thus pm_runtime_force_suspend and pm_runtime_force_resume are
> used as system sleep callbacks during system wide PM transitions.
> 
> Signed-off-by: Sameer Pujar <spujar@nvidia.com>
> ---
>  drivers/dma/tegra210-adma.c | 10 ++--------
>  1 file changed, 2 insertions(+), 8 deletions(-)
> 
> diff --git a/drivers/dma/tegra210-adma.c b/drivers/dma/tegra210-adma.c
> index 650cd9c..be29171 100644
> --- a/drivers/dma/tegra210-adma.c
> +++ b/drivers/dma/tegra210-adma.c
> @@ -796,17 +796,11 @@ static int tegra_adma_remove(struct platform_device *pdev)
>  	return 0;
>  }
>  
> -#ifdef CONFIG_PM_SLEEP
> -static int tegra_adma_pm_suspend(struct device *dev)
> -{
> -	return pm_runtime_suspended(dev) == false;
> -}
> -#endif
> -
>  static const struct dev_pm_ops tegra_adma_dev_pm_ops = {
>  	SET_RUNTIME_PM_OPS(tegra_adma_runtime_suspend,
>  			   tegra_adma_runtime_resume, NULL)
> -	SET_SYSTEM_SLEEP_PM_OPS(tegra_adma_pm_suspend, NULL)
> +	SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
> +				pm_runtime_force_resume)
>  };

Looking at our downstream kernel we use LATE_SYSTEM_SLEEP for these. Any
reason why you changed this?

Cheers
Jon

-- 
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