linux-kernel - Re: [RFC] firmware loader: retry _nowait requests when userhelper is not yet available

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Message-Id: <201203181321.38852.rjw@sisk.pl>
Date:	Sun, 18 Mar 2012 13:21:38 +0100
From:	"Rafael J. Wysocki" <rjw@...k.pl>
To:	Linus Torvalds <torvalds@...ux-foundation.org>
Cc:	Christian Lamparter <chunkeey@...glemail.com>,
	"Srivatsa S. Bhat" <srivatsa.bhat@...ux.vnet.ibm.com>,
	linux-kernel@...r.kernel.org, gregkh@...uxfoundation.org,
	alan@...rguk.ukuu.org.uk,
	Linux PM mailing list <linux-pm@...r.kernel.org>
Subject: Re: [RFC] firmware loader: retry _nowait requests when userhelper is not yet available

On Sunday, March 18, 2012, Linus Torvalds wrote:
> On Sat, Mar 17, 2012 at 5:29 PM, Rafael J. Wysocki <rjw@...k.pl> wrote:
> >
> > The patch below (untested) goes slightly into that direction, although not as
> > far as to modify fw_create_instance().  It does, however, split
> > _request_firmware() into "prepare", "load" and "cleanup" parts and moves
> > the usermodehelper check along with the read-locking of umhelper_sem down
> > to the callers, ie. request_firmware() and request_firmware_work_func().
> 
> Looks fairly reasonable to me from a quick read-through, and the code
> seems to make sense.

Thanks!

I'll split it into a series of patches, then, and post for testing.

Rafael
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