linux-kernel - Re: [PATCH] drivers/base/power: be more verbose in device_pm

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Date:	Fri, 4 Jun 2010 09:45:27 -0700
From:	Greg KH <gregkh@...e.de>
To:	Daniel Mack <daniel@...aq.de>
Cc:	linux-kernel@...r.kernel.org, "Rafael J. Wysocki" <rjw@...k.pl>,
	Len Brown <len.brown@...el.com>, Magnus Damm <damm@...l.co.jp>,
	Alan Stern <stern@...land.harvard.edu>,
	Randy Dunlap <randy.dunlap@...cle.com>,
	linux-pm@...ts.linux-foundation.org
Subject: Re: [PATCH] drivers/base/power: be more verbose in device_pm_add()

On Fri, Jun 04, 2010 at 02:17:14PM +0200, Daniel Mack wrote:
> If a parentless device was added during a PM transaction, developers
> might want to know which device caused the troube. Hence, output the
> kobject's name in this case.
> 
> Signed-off-by: Daniel Mack <daniel@...aq.de>
> Cc: Rafael J. Wysocki <rjw@...k.pl>
> Cc: Len Brown <len.brown@...el.com>
> Cc: Greg Kroah-Hartman <gregkh@...e.de>
> Cc: Magnus Damm <damm@...l.co.jp>
> Cc: Alan Stern <stern@...land.harvard.edu>
> Cc: Randy Dunlap <randy.dunlap@...cle.com>
> Cc: linux-pm@...ts.linux-foundation.org
> ---
>  drivers/base/power/main.c |    2 +-
>  1 files changed, 1 insertions(+), 1 deletions(-)
> 
> diff --git a/drivers/base/power/main.c b/drivers/base/power/main.c
> index 941fcb8..9e9fe6a 100644
> --- a/drivers/base/power/main.c
> +++ b/drivers/base/power/main.c
> @@ -98,7 +98,7 @@ void device_pm_add(struct device *dev)
>  		 * transition is in progress in order to avoid leaving them
>  		 * unhandled down the road
>  		 */
> -		dev_WARN(dev, "Parentless device registered during a PM transaction\n");
> +		dev_WARN(dev, "Parentless device registered during a PM transaction: %s\n", kobject_name(&dev->kobj));

Doesn'tthe dev_WARN call already print the name of the device?  Why
print it twice?

thanks,

greg k-h
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