linux-kernel - Re: [linux-pm][PATCH] base: Change power/wakeup output from "" to "unsupported" if wakeup feature isn't supported by a device

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Message-Id: <1199670779.3551.7.camel@yangyi-dev.bj.intel.com>
Date:	Mon, 07 Jan 2008 09:52:59 +0800
From:	Yi Yang <yi.y.yang@...el.com>
To:	Alan Stern <stern@...land.harvard.edu>
Cc:	David Brownell <david-b@...bell.net>, pavel@....cz,
	linux-pm@...ts.linux-foundation.org, linux-kernel@...r.kernel.org
Subject: Re: [linux-pm][PATCH] base: Change power/wakeup output from "" to 
	"unsupported" if wakeup feature isn't supported by a device

On Fri, 2008-01-04 at 11:38 -0500, Alan Stern wrote:
> On Fri, 4 Jan 2008, David Brownell wrote:
> 
> > > > This patch changes empty output to "unsupported" in order that a user knows
> > > > wakeup feature isn't supported by this device when he/she
> > > > 'cat /sys/devices/.../power/wakeup', please consider to apply,
> > > > thanks.
> > >
> > > What about simply removing "wakuep" file if wakeup is not supported?
> > 
> > It may not *stay* unsupported, so I think changing it in either
> > of those permanent ways would be confusing/misleading.
> 
> How about changing it to say "unavailable"?  That doesn't imply 
> permanence.
This should be an option.
> 
> Alan Stern
> 

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