linux-kernel - Re: [PATCH 3/3] firmware/dmi

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Date:	Tue, 09 Jul 2013 18:23:32 +0200
From:	Jean Delvare <jdelvare@...e.de>
To:	Joe Perches <joe@...ches.com>
Cc:	linux-kernel@...r.kernel.org, Ben Hutchings <ben@...adent.org.uk>,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [PATCH 3/3] firmware/dmi_scan: Constify strings

Hi Joe,

Le Tuesday 09 July 2013 à 08:58 -0700, Joe Perches a écrit :
> On Tue, 2013-07-09 at 17:43 +0200, Jean Delvare wrote:
> > Add const to all DMI string pointers where this is possible. This
> > fixes a checkpatch warning.
> 
> That's a nice little improvement.

Thanks.

> > +++ linux-3.10-rc0/drivers/firmware/dmi_scan.c	2013-05-04 11:20:52.808187924 +0200
> []
> > @@ -252,7 +252,7 @@ static void __init dmi_save_oem_strings_
> >  	struct dmi_device *dev;
> >  
> >  	for (i = 1; i <= count; i++) {
> > -		char *devname = dmi_string(dm, i);
> > +		const char *devname = dmi_string(dm, i);
> >  
> >  		if (devname == dmi_empty_string)
> 
> btw: that last test sure looks like it would be
>      better written as
> 		if (strcmp(devname, dmi_empty_string) == 0)
> 

No, it does not. If you look at the rest of the code, the comparison
makes sense as is.

-- 
Jean Delvare
Suse L3

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