linux-kernel - Re: [PATCH] driver core: Add deferred_probe attribute to devices in sysfs

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Message-ID: <1472655864.28694.6.camel@codethink.co.uk>
Date:   Wed, 31 Aug 2016 16:04:24 +0100
From:   Ben Hutchings <ben.hutchings@...ethink.co.uk>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     linux-kernel@...r.kernel.org,
        CT kernel <linux-kernel@...ts.codethink.co.uk>
Subject: Re: [PATCH] driver core: Add deferred_probe attribute to devices in
 sysfs

On Wed, 2016-08-31 at 15:10 +0200, Greg Kroah-Hartman wrote:
> On Tue, Aug 16, 2016 at 02:34:18PM +0100, Ben Hutchings wrote:
> > It is sometimes useful to know that a device is on the deferred probe
> > list rather than, say, not having a driver available.  Expose this
> > information to user-space.
> 
> What can someone use this for?  It's an attribute that for 99.9% of the
> time will always be the same value.
> 
> I can see when debugging it might be nice, but what can a user do with
> this?

Yes this is mostly for debugging.  (Like many of the attributes in
sysfs.)

Ben.

-- 
Ben Hutchings
Software Developer, Codethink Ltd.