linux-kernel - Re: loading firmware while usermodehelper disabled.

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Date:	Sun, 1 Jan 2012 17:32:22 +0100
From:	Marek Vasut <marek.vasut@...il.com>
To:	Oliver Neukum <oliver@...kum.org>
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Dave Jones <davej@...hat.com>,
	Linux Kernel <linux-kernel@...r.kernel.org>,
	Larry Finger <Larry.Finger@...inger.net>,
	Chaoming Li <chaoming_li@...lsil.com.cn>,
	"John W. Linville" <linville@...driver.com>,
	Matthew Garrett <mjg@...hat.com>,
	"Greg Kroah-Hartman" <gregkh@...e.de>,
	USB list <linux-usb@...r.kernel.org>,
	Linux Wireless List <linux-wireless@...r.kernel.org>
Subject: Re: loading firmware while usermodehelper disabled.

> Am Sonntag, 1. Januar 2012, 10:54:47 schrieb Marek Vasut:
> > > Am Samstag, 31. Dezember 2011, 19:39:18 schrieb Marek Vasut:
> > > > maybe we should implement such thing into the firmware loader itself?
> > > > Allow it -- for example via some node in /dev -- to force loading
> > > > firmware into some buffer in kernel just before suspend so it'll
> > > > certainly be readily available at resume time?
> > > 
> > > This is difficult. We don't know at suspend time which firmware we will
> > > need at resume time.
> > 
> > That's not actually true ... you can ask the drivers if they need to load
> > firmware after resume ... that can be implemented and udev can handle it.
> > The driver should know if the hardware it's controlling is stupid or
> > not.
> 
> Device IDs can morph due to a power loss. After resumption another driver
> would bind.

What do you mean? I don't think I quite follow.

M

> 
> 	Regards
> 		Oliver
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