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

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Message-ID: <20090819233601.GA2875@kroah.com>
Date:	Wed, 19 Aug 2009 16:36:01 -0700
From:	Greg KH <greg@...ah.com>
To:	"Rafael J. Wysocki" <rjw@...k.pl>
Cc:	Stephen Rothwell <sfr@...b.auug.org.au>,
	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 Wed, Aug 19, 2009 at 11:38:03PM +0200, Rafael J. Wysocki wrote:
> 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.

Ick.  struct device should _never_ be on the stack, why would this code
want to do such a thing?

thanks,

greg k-h
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