linux-kernel - Re: [PATCH v2] MMC/SDIO: enable SDIO device to suspend/resume asynchronously

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Date:	Sun, 15 Nov 2015 21:58:31 +0800
From:	"Fu, Zhonghui" <zhonghui.fu@...ux.intel.com>
To:	Ulf Hansson <ulf.hansson@...aro.org>,
	Adrian Hunter <adrian.hunter@...el.com>, neilb@...e.de,
	Jaehoon Chung <jh80.chung@...sung.com>, afenkart@...il.com,
	joe@...ches.com
CC:	linux-mmc <linux-mmc@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2] MMC/SDIO: enable SDIO device to suspend/resume asynchronously



Please see the latest version: "[PATCH v3] MMC/SDIO: enable SDIO device to suspend/resume asynchronously".


Thanks,
Zhonghui

On 9/21/2015 12:30 PM, 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 SDIO card and function devices to suspend/resume
> asynchronously. This will take advantage of multicore and improve
> system suspend/resume speed.
>
> Signed-off-by: Zhonghui Fu <zhonghui.fu@...ux.intel.com>
> ---
> Changes in v2:
> - Amend commit message.
>
>  drivers/mmc/core/sdio.c |    4 ++++
>  1 files changed, 4 insertions(+), 0 deletions(-)
>
> diff --git a/drivers/mmc/core/sdio.c b/drivers/mmc/core/sdio.c
> index b91abed..6719b77 100644
> --- a/drivers/mmc/core/sdio.c
> +++ b/drivers/mmc/core/sdio.c
> @@ -1106,6 +1106,8 @@ int mmc_attach_sdio(struct mmc_host *host)
>  		pm_runtime_enable(&card->dev);
>  	}
>  
> +	device_enable_async_suspend(&card->dev);
> +
>  	/*
>  	 * The number of functions on the card is encoded inside
>  	 * the ocr.
> @@ -1126,6 +1128,8 @@ int mmc_attach_sdio(struct mmc_host *host)
>  		 */
>  		if (host->caps & MMC_CAP_POWER_OFF_CARD)
>  			pm_runtime_enable(&card->sdio_func[i]->dev);
> +
> +		device_enable_async_suspend(&card->sdio_func[i]->dev);
>  	}
>  
>  	/*
> -- 1.7.1
>

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