linux-kernel - Re: linux-next: suspend tree build warnings

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Date:	Wed, 19 Aug 2009 23:38:03 +0200
From:	"Rafael J. Wysocki" <rjw@...k.pl>
To:	Stephen Rothwell <sfr@...b.auug.org.au>
Cc:	linux-next@...r.kernel.org, linux-kernel@...r.kernel.org,
	pm list <linux-pm@...ts.linux-foundation.org>,
	Alan Stern <stern@...land.harvard.edu>,
	Mauro Carvalho Chehab <mchehab@...radead.org>,
	linux-media@...r.kernel.org
Subject: Re: linux-next: suspend tree build warnings

On Wednesday 19 August 2009, Stephen Rothwell wrote:
> Hi Rafael,

Hi,

> Today's linux-next build (x86_64 allmodconfig) produced these warnings:
> 
> drivers/media/dvb/frontends/dib7000p.c: In function ‘dib7000p_i2c_enumeration’:
> drivers/media/dvb/frontends/dib7000p.c:1315: warning: the frame size of 2256 bytes is larger than 2048 bytes
> drivers/media/dvb/frontends/dib3000mc.c: In function ‘dib3000mc_i2c_enumeration’:
> drivers/media/dvb/frontends/dib3000mc.c:853: warning: the frame size of 2160 bytes is larger than 2048 bytes
> 
> Introduced by commit 99307958cc9c1b0b2e0dad4bbefdafaf9ac5a681 ("PM:
> Introduce core framework for run-time PM of I/O devices (rev. 17)").

Well.

This commit increases the size of struct device quite a bit and both of the
drivers above create a "state" object on the stack that contains struct device
among other things.

I think they should allocate these objects using kmalloc() and I don't know
what I can do about this, really.  Maybe except for modifying the drivers to
use kmalloc().

Thanks,
Rafael
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