linux-kernel - Re: Deprecate suspend/resume in device

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Date:	Thu, 14 Jun 2012 21:11:39 +0200
From:	"Rafael J. Wysocki" <rjw@...k.pl>
To:	Greg KH <gregkh@...uxfoundation.org>
Cc:	Ning Jiang <ning.n.jiang@...il.com>, linux-kernel@...r.kernel.org,
	Linux PM mailing list <linux-pm@...r.kernel.org>
Subject: Re: Deprecate suspend/resume in device_driver

On Wednesday, June 13, 2012, Ning Jiang wrote:
> The suspend/resume will not be called if they are defined in
> device_driver directly,
> PM core will only use suspend/resume function in dev_pm_ops. Thus we shall
> mark the old suspend/resume deprecated and make them scheduled for removal.
> 
> 
> From efee1b349a8abcb4702d93c1c12e7f27c96fbcfc Mon Sep 17 00:00:00 2001
> From: Ning Jiang <ning.n.jiang@...il.com>
> Date: Wed, 13 Jun 2012 15:00:33 +0800
> Subject: [PATCH] PM: Deprecate suspend/resume in device_driver
> 
> Make suspend/resume callbacks in device_driver deprecated and scheduled
> for removal since they are not used in PM core anymore.
> 
> Legacy drivers who still use them need to move suspend/resume callbacks
> to dev_pm_ops.
> 
> Signed-off-by: Ning Jiang <ning.n.jiang@...il.com>

Greg, do you have any objections here?

Rafael


> ---
>  include/linux/device.h |    4 ++--
>  1 files changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/include/linux/device.h b/include/linux/device.h
> index e04f577..884d9a6 100644
> --- a/include/linux/device.h
> +++ b/include/linux/device.h
> @@ -226,8 +226,8 @@ struct device_driver {
>  	int (*probe) (struct device *dev);
>  	int (*remove) (struct device *dev);
>  	void (*shutdown) (struct device *dev);
> -	int (*suspend) (struct device *dev, pm_message_t state);
> -	int (*resume) (struct device *dev);
> +	int (*suspend) (struct device *dev, pm_message_t state) __deprecated;
> +	int (*resume) (struct device *dev) __deprecated;
>  	const struct attribute_group **groups;
> 
>  	const struct dev_pm_ops *pm;
> 

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