linux-kernel - linux-next: pcmcia tree build warning

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Date:	Mon, 9 Nov 2009 14:54:51 +1100
From:	Stephen Rothwell <sfr@...b.auug.org.au>
To:	Dominik Brodowski <linux@...inikbrodowski.net>
Cc:	linux-next@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: linux-next: pcmcia tree build warning

Hi Dominik,

Today's linux-next build (x86_64 allmodconfig) produced this warning:

drivers/char/pcmcia/cm4000_cs.c: In function 'cmm_ioctl':
/scratch/sfr/next/drivers/char/pcmcia/cm4000_cs.c:1630: warning: the frame size of 2176 bytes is larger than 2048 bytes

Introduced by commit 7194198b163c83725f52ce8e34b24cca053deea7 ("pcmcia:
use dynamic debug infrastructure, deprecate CS_CHECK (char)") which
unconditionalised "char *ioctl_names[CM_IOC_MAXNR + 1]" on the stack.
CM_IOC_MAXNR is 255, so this adds 2k to the stack frame just to allow the
printing of one of five ioctl names in a debug message.  It could be made
static ...

-- 
Cheers,
Stephen Rothwell                    sfr@...b.auug.org.au
http://www.canb.auug.org.au/~sfr/

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