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

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Message-ID: <564977C9.8010207@linux.intel.com>
Date:	Mon, 16 Nov 2015 14:29:29 +0800
From:	"Fu, Zhonghui" <zhonghui.fu@...ux.intel.com>
To:	Andy Shevchenko <andriy.shevchenko@...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: Re: [PATCH v2] mmc/sdhci-acpi: enable sdhci-acpi device to suspend/resume
 asynchronously



On 9/21/2015 5:32 PM, Andy Shevchenko wrote:
> 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.

Sorry for replying this mail after long leave.

I have added the test result into commit message and sent the latest version of this patch:"[PATCH v3] mmc/sdhci-acpi: enable sdhci-acpi device to suspend/resume asynchronously".


Thanks,
Zhonghui

>
>> 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
>>

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