linux-kernel - Re: [PATCH v2 2/2] bus: tegra-aconnect: add system sleep callbacks

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Message-ID: <c7b1e930-238b-5943-9732-64246b9ffb7b@nvidia.com>
Date:   Wed, 13 Mar 2019 10:30:42 +0000
From:   Jon Hunter <jonathanh@...dia.com>
To:     Sameer Pujar <spujar@...dia.com>, <treding@...dia.com>
CC:     <linux-tegra@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2 2/2] bus: tegra-aconnect: add system sleep callbacks


On 13/03/2019 04:41, Sameer Pujar wrote:
> pm_runtime_force_suspend() and pm_runtime_force_resume() are used as system
> sleep noirq suspend and resume callbacks. If the driver is active till late
> suspend, where runtime PM cannot run, force suspend is essential for the
> device. This makes sure that the device is put into low power state during
> system wide PM transitions to sleep states.
> 
> Signed-off-by: Sameer Pujar <spujar@...dia.com>
> ---
>  drivers/bus/tegra-aconnect.c | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/drivers/bus/tegra-aconnect.c b/drivers/bus/tegra-aconnect.c
> index 9349157..ac58142 100644
> --- a/drivers/bus/tegra-aconnect.c
> +++ b/drivers/bus/tegra-aconnect.c
> @@ -94,6 +94,8 @@ static int tegra_aconnect_runtime_suspend(struct device *dev)
>  static const struct dev_pm_ops tegra_aconnect_pm_ops = {
>  	SET_RUNTIME_PM_OPS(tegra_aconnect_runtime_suspend,
>  			   tegra_aconnect_runtime_resume, NULL)
> +	SET_NOIRQ_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
> +				      pm_runtime_force_resume)
>  };
>  
>  static const struct of_device_id tegra_aconnect_of_match[] = {

Acked-by: Jon Hunter <jonathanh@...dia.com>

Cheers
Jon

-- 
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