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

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Message-ID: <20120103001356.GA17183@srcf.ucam.org>
Date:	Tue, 3 Jan 2012 00:13:56 +0000
From:	Matthew Garrett <mjg@...hat.com>
To:	Jack Stone <jwjstone@...tmail.fm>
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Alan Stern <stern@...land.harvard.edu>,
	Oliver Neukum <oliver@...kum.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>,
	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.

On Mon, Jan 02, 2012 at 11:31:55PM +0000, Jack Stone wrote:

> Rather than merging the drivers we could make the uvcvideo (or any other
> generic driver) driver expose a "subdriver" interface that allows
> another module to bind to the specific ID and add extra handling to
> certain events. We could then use that interface to provide a firmware
> driver for each device that needs it. The firmware driver could bind to
> the bootstrap device and to the uvcvideo subdriver interface and it
> would then have all the lifetime info we need. [Credit to Linus for
> suggesting this idea]

No, the uvcvideo driver would need to call out to load the firmware 
loader driver, otherwise you'll never know to load the firmware loader 
driver.

-- 
Matthew Garrett | mjg59@...f.ucam.org
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