linux-kernel - Re: [PATCH 3.18 105/183] [media] af9005: fix kernel panic on init if compiled without IR

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Date:	Sun, 25 Jan 2015 23:56:22 +0100
From:	Luca Olivetti <luca@...toso.org>
To:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
CC:	linux-kernel@...r.kernel.org, stable@...r.kernel.org,
	Fengguag Wu <fengguang.wu@...el.com>,
	Frank Schäfer <fschaefer.oss@...glemail.com>,
	Mauro Carvalho Chehab <mchehab@....samsung.com>
Subject: Re: [PATCH 3.18 105/183] [media] af9005: fix kernel panic on init
 if compiled without IR

El 25/01/15 a les 23:01, Greg Kroah-Hartman ha escrit:
> On Sun, Jan 25, 2015 at 08:32:59PM +0100, Luca Olivetti wrote:
>> El 25/01/15 a les 19:07, Greg Kroah-Hartman ha escrit:
>>> 3.18-stable review patch.  If anyone has any objections, please let me know.
>>
>> I don't have any objection apart from the description: IIRC the bug is
>> triggered only if the kernel is compiled without module support.
>> In any case I think that symbol_request should return NULL if the
>> requested symbol is not available, either because the kernel has been
>> compiled without module support or the required symbol is not provided
>> by any module (though I think in the latter case it already works this
>> way, at least it did at the time I wrote the driver).
>> Or, as I said here
>> https://lkml.org/lkml/2009/2/4/350
>> maybe symbol_request isn't the correct approach to provide multiple,
>> alternative, implementations.
> 
> The description is identical to what is in Linus's tree, so there's not
> much I can do about it at this late point in time, sorry.

I'm OK with that, but will somebody look at/clarify the behavior of
symbol_request when modules are disabled?

Bye
-- 
Luca

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