linux-kernel - Re: randconfig build errors with next-20130620, in several drivers/media

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Date:	Sat, 22 Jun 2013 02:27:20 +0200
From:	Laurent Pinchart <laurent.pinchart@...asonboard.com>
To:	Jim Davis <jim.epost@...il.com>
Cc:	sfr@...b.auug.org.au, linux-next@...r.kernel.org,
	linux-kernel@...r.kernel.org, pawel@...iak.com,
	m.szyprowski@...sung.com, kyungmin.park@...sung.com
Subject: Re: randconfig build errors with next-20130620, in several drivers/media

Hi,

On Thursday 20 June 2013 11:52:44 Jim Davis wrote:
> Building with the attached random configuration file generates errors in
> both
> 
> drivers/media/v4l2-core
> drivers/media/usb/uvc
> 
>   LD      init/built-in.o
> /home/jim/linux-next/linux/drivers/media/v4l2-core/videobuf2-core.c:2577:
> undefi ned reference to `video_devdata'

[snip]

> /home/jim/linux-next/linux/drivers/media/v4l2-core/videobuf2-core.c:2591:
> undefi ned reference to `v4l2_fh_release'

[snip]

> /home/jim/linux-next/linux/drivers/media/v4l2-core/videobuf2-core.c:1980:
> undefi ned reference to `v4l2_event_pending'

[snip]

> drivers/built-in.o: In function `uvc_delete':
> /home/jim/linux-next/linux/drivers/media/usb/uvc/uvc_driver.c:1606:
> undefined re ference to `usb_put_intf'

[snip]

The issue seem to be caused by USB_VIDEO_CLASS=y and VIDEO_V4L2=m && USB=m. 
I'm not sure what made that combination possible, but I haven't been able to 
reproduce it locally on next-20130620. Running make with the attached config 
turns USB_VIDEO_CLASS=y into USB_VIDEO_CLASS=m.

-- 
Regards,

Laurent Pinchart

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