linux-kernel - Re: [PATCH v4 6/6] ata: add ata port runtime PM callbacks

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Message-ID: <4ED35EBF.6030602@mvista.com>
Date:	Mon, 28 Nov 2011 14:13:19 +0400
From:	Sergei Shtylyov <sshtylyov@...sta.com>
To:	Lin Ming <ming.m.lin@...el.com>
CC:	Jeff Garzik <jgarzik@...ox.com>,
	James Bottomley <JBottomley@...allels.com>,
	Alan Stern <stern@...land.harvard.edu>,
	Tejun Heo <tj@...nel.org>, linux-kernel@...r.kernel.org,
	linux-ide@...r.kernel.org, linux-scsi@...r.kernel.org,
	linux-pm@...r.kernel.org, "Rafael J. Wysocki" <rjw@...k.pl>,
	Huang Ying <ying.huang@...el.com>,
	Zhang Rui <rui.zhang@...el.com>
Subject: Re: [PATCH v4 6/6] ata: add ata port runtime PM callbacks

Hello.

On 28-11-2011 5:15, Lin Ming wrote:

> Add ata port runtime suspend/resume/idle callbacks.
> Set ->eh_noresume to skip the runtime PM calls on scsi host
> in the error handler to avoid dead lock.

> Signed-off-by: Lin Ming<ming.m.lin@...el.com>
> ---
>   drivers/ata/libata-core.c      |   10 ++++++++++
>   drivers/ata/libata-scsi.c      |    1 +
>   drivers/ata/libata-transport.c |    4 ++++
>   3 files changed, 15 insertions(+), 0 deletions(-)

> diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c
> index 04c208e..15a3d4d 100644
> --- a/drivers/ata/libata-core.c
> +++ b/drivers/ata/libata-core.c
[...]
> @@ -5307,9 +5308,18 @@ static int ata_port_resume(struct device *dev)
>   	return rc;
>   }
>
> +static int ata_port_runtime_idle(struct device *dev)
> +{
> +	return pm_runtime_suspend(dev);
> +}
> +
>   static const struct dev_pm_ops ata_port_pm_ops = {
>   	.suspend = ata_port_suspend,
>   	.resume = ata_port_resume,
> +
> +	.runtime_suspend = ata_port_suspend_common,
> +	.runtime_resume = ata_port_resume,
> +	.runtime_idle = ata_port_runtime_idle,

    Can't use set this to pm_runtime_suspend directly?

MBR, Sergei
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