linux-kernel - Re: [PATCH] Firmware loader driver for USB Apple iSight camera

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Date:	Tue, 3 Jun 2008 22:38:05 -0700
From:	Greg KH <greg@...ah.com>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	Matthew Garrett <mjg59@...f.ucam.org>, linux-usb@...r.kernel.org,
	linux-kernel@...r.kernel.org, gregkh@...e.de,
	bersace03@...oste.net, johannes@...solutions.de
Subject: Re: [PATCH] Firmware loader driver for USB Apple iSight camera

On Mon, Jun 02, 2008 at 09:21:03PM +0200, Ingo Molnar wrote:
> 
> * Matthew Garrett <mjg59@...f.ucam.org> wrote:
> 
> > Uninitialised Apple iSight drivers present with a distinctive USB ID. 
> > Once firmware has been uploaded, they disconnect and reconnect with a 
> > new ID. At this point they can be driven by the uvcvideo driver. As 
> > this is unique to the Apple cameras and not functionality shared by 
> > any other UVC devices, it makes sense to provide the firmware loading 
> > functionality in a separate driver. This driver will read an isight.fw 
> > file extracted from the Apple driver using the tools at 
> > http://bersace03.free.fr/ift/ and upload it to the camera. It will 
> > also handle the case where the device loses its firmware during 
> > hibernation and must have it reloaded.
> 
> this caused a build failure - find the fix below. (fix can also be 
> pulled/cherry-picked from -tip's tip/out-of-tree topic branch)
> 
> 	Ingo
> 
> -------------------->
> commit 1f910d33b2084d03267db20359472891f95b45b4
> Author: Ingo Molnar <mingo@...e.hu>
> Date:   Mon Jun 2 21:07:27 2008 +0200
> 
>     USB: fix build bug in USB_ISIGHTFW
>     
>     -tip tree testing found this build bug:
>     
>       drivers/built-in.o: In function `isight_firmware_load':
>       isight_firmware.c:(.text+0x1ade08): undefined reference to `request_firmware'
>       isight_firmware.c:(.text+0x1adf9c): undefined reference to `release_firmware'
>     
>     select FW_LOADER in USB_ISIGHTFW.

Thanks, I'll add this to my queue.

greg k-h
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