linux-kernel - Re: [media/dvb_usb_af9005] BUG: unable to handle kernel paging request (WAS: [media/em28xx] BUG: unable to handle kernel)

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Date:	Thu, 25 Sep 2014 15:54:05 +0200
From:	Frank Schäfer <fschaefer.oss@...glemail.com>
To:	Luca Olivetti <luca@...toso.org>,
	Fengguang Wu <fengguang.wu@...el.com>
CC:	Mauro Carvalho Chehab <m.chehab@...sung.com>,
	linux-media@...r.kernel.org, Jet Chen <jet.chen@...el.com>,
	Su Tao <tao.su@...el.com>, Yuanhan Liu <yuanhan.liu@...el.com>,
	LKP <lkp@...org>, linux-kernel@...r.kernel.org, crope@....fi
Subject: Re: [media/dvb_usb_af9005] BUG: unable to handle kernel paging request
 (WAS: [media/em28xx] BUG: unable to handle kernel)


Am 23.09.2014 um 23:03 schrieb Luca Olivetti:
> El 23/09/14 20:52, Frank Schäfer ha escrit:
>
>>>> This seems to be an ancient bug, which is known at least since 5 1/2 years:
>>>> https://lkml.org/lkml/2009/2/4/350
> [...]
>>> #if defined(CONFIG_MODULE) || defined(CONFIG_DVB_USB_AF9005_REMOTE)
>> What happens, if CONFIG_MODULES is enabled, but neither module
>> af9005-remote nor any other IR module is available ?
>> Has this ever been tested ?
> I think I tested at the time and symbol_request returned NULL in that
> case, however I'm not sure and I cannot find any documentation on how
> symbol_request is supposed to work in that case.

Ok, thanks.
I assume noone wants to invest some time into this old driver and covert
it to todays kernel IR infrastructure as suggested by Antti ? :-)
Then I'm going to send a patch with the 

#if defined(CONFIG_MODULE) || defined(CONFIG_DVB_USB_AF9005_REMOTE)

approach.
That's at least better than leaving the bug unfixed.

Regards,
Frank

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