linux-kernel - Re: [PATCH v2 3/3] dmi: Make dmi_walk and dmi_walk

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Date:	Tue, 19 Jan 2016 10:03:03 +0100
From:	Jean Delvare <jdelvare@...e.de>
To:	Pali Rohár <pali.rohar@...il.com>
Cc:	Andy Lutomirski <luto@...nel.org>,
	platform-driver-x86@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 3/3] dmi: Make dmi_walk and dmi_walk_early return
 real error codes

Hi Pali,

On Tue, 19 Jan 2016 09:36:33 +0100, Pali Rohár wrote:
> On Tuesday 19 January 2016 08:54:26 Jean Delvare wrote:
> > > @@ -978,11 +978,11 @@ int dmi_walk(void (*decode)(const struct dmi_header *, void *),
> > >  	u8 *buf;
> > >  
> > >  	if (!dmi_available)
> > > -		return -1;
> > > +		return -ENOENT;
> > 
> > -ENOSYS would seem more appropriate?
> 
> IIRC -ENOSYS is for non implemented syscalls.

I can see a lot of -ENOSYS in include/linux/*.h returned by stubs when
a specific subsystem is not included. Not related to syscalls at all.
This is what lead to my suggestion.

-- 
Jean Delvare
SUSE L3 Support