linux-kernel - Re: [PATCH] [media] dib0700: get rid of on-stack dma buffers

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Message-Id: <201103061306.10045.oliver@neukum.org>
Date:	Sun, 6 Mar 2011 13:06:09 +0100
From:	Oliver Neukum <oliver@...kum.org>
To:	Florian Mickler <florian@...kler.org>
Cc:	mchehab@...radead.org, linux-media@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	"Greg Kroah-Hartman" <greg@...ah.com>,
	"Rafael J. Wysocki" <rjw@...k.pl>,
	Maciej Rutecki <maciej.rutecki@...il.com>
Subject: Re: [PATCH] [media] dib0700: get rid of on-stack dma buffers

Am Sonntag, 6. März 2011, 12:16:52 schrieb Florian Mickler:
> This should fix warnings seen by some:
> 	WARNING: at lib/dma-debug.c:866 check_for_stack
> 
> Fixes: https://bugzilla.kernel.org/show_bug.cgi?id=15977.
> Reported-by: Zdenek Kabelac <zdenek.kabelac@...il.com>
> Signed-off-by: Florian Mickler <florian@...kler.org>
> CC: Mauro Carvalho Chehab <mchehab@...radead.org>
> CC: linux-media@...r.kernel.org
> CC: linux-kernel@...r.kernel.org
> CC: Greg Kroah-Hartman <greg@...ah.com>
> CC: Rafael J. Wysocki <rjw@...k.pl>
> CC: Maciej Rutecki <maciej.rutecki@...il.com>
> ---
> 
> Please take a look at it, as I do not do that much kernel hacking
> and don't wanna brake anybodys computer... :)
> 
> From my point of view this should _not_ go to stable even though it would
> be applicable. But if someone feels strongly about that and can
> take responsibility for that change...

The patch looks good and is needed in stable.
It could be improved by using a buffer allocated once in the places
you hold a mutex anyway.

	Regards
		Oliver
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