linux-kernel - Re: [PATCH v2] mmc/sdhci-acpi: enable sdhci-acpi device to suspend/resume asynchronously

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Date:	Mon, 21 Sep 2015 12:32:09 +0300
From:	Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To:	"Fu, Zhonghui" <zhonghui.fu@...ux.intel.com>,
	Ulf Hansson <ulf.hansson@...aro.org>,
	Adrian Hunter <adrian.hunter@...el.com>, yunpeng.gao@...el.com,
	peter.griffin@...aro.org
Cc:	linux-mmc <linux-mmc@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2] mmc/sdhci-acpi: enable sdhci-acpi device to
 suspend/resume asynchronously

On Mon, 2015-09-21 at 14:51 +0800, Fu, Zhonghui wrote:
> Now, PM core supports asynchronous suspend/resume mode for devices
> during system suspend/resume, and the power state transition of one
> device may be completed in separate kernel thread. PM core ensures
> all power state transition timing dependency between devices. This
> patch enables sdhci-acpi device to suspend/resume asynchronously.
> This will take advantage of multicore and improve system
> suspend/resume speed.
> 

It would be nice I think to put here statistics you collected as well.


> Signed-off-by: Zhonghui Fu <zhonghui.fu@...ux.intel.com>
> ---
> Changes in v2:
> - Amend commit message.
> 
>  drivers/mmc/host/sdhci-acpi.c |    2 ++
>  1 files changed, 2 insertions(+), 0 deletions(-)
> 
> diff --git a/drivers/mmc/host/sdhci-acpi.c b/drivers/mmc/host/sdhci
> -acpi.c
> index 22d929f..67e6263 100644
> --- a/drivers/mmc/host/sdhci-acpi.c
> +++ b/drivers/mmc/host/sdhci-acpi.c
> @@ -379,6 +379,8 @@ static int sdhci_acpi_probe(struct 
> platform_device *pdev)
>  		pm_runtime_enable(dev);
>  	}
>  
> +	device_enable_async_suspend(dev);
> +
>  	return 0;
>  
>  err_free:
> -- 1.7.1
> 

-- 
Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Intel Finland Oy
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