linux-kernel - Re: [RFC PATCH 08/13] driver core: firmware loader: fix device lifetime

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Message-ID: <20120727103241.GB14445@aftab.osrc.amd.com>
Date:	Fri, 27 Jul 2012 12:32:41 +0200
From:	Borislav Petkov <bp@...64.org>
To:	Ming Lei <ming.lei@...onical.com>
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	"Rafael J. Wysocki" <rjw@...k.pl>, linux-kernel@...r.kernel.org
Subject: Re: [RFC PATCH 08/13] driver core: firmware loader: fix device
 lifetime

On Fri, Jul 27, 2012 at 09:30:57AM +0800, Ming Lei wrote:
> No, the comment above is misleading and not useless, and I think the below
> is good:
> 
>  *      Asynchronous variant of request_firmware() for user contexts where
>  *      it is not possible to sleep for long time or can't sleep at all, depends

									depending

>  *      on the @gfp flag passed.
> 
> Anyway, the original part of 'It can't be called in atomic contexts.' is wrong
> and should be removed.

I still don't like too much the "not possible to sleep for long time"
expression.

Maybe change it to "should sleep for as small periods as possible since
it increases boot time of device drivers requesting firmware in their
->probe() methods."

This way you explain exactly why - this way people who don't know the
code will know exactly what the comments mean and what the intention
was.

Thanks.

-- 
Regards/Gruss,
Boris.

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