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

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Message-ID: <20160119090736.GF7192@pali>
Date:	Tue, 19 Jan 2016 10:07:36 +0100
From:	Pali Rohár <pali.rohar@...il.com>
To:	Jean Delvare <jdelvare@...e.de>
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

On Tuesday 19 January 2016 10:03:03 Jean Delvare wrote:
> 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.

https://lkml.org/lkml/2014/8/22/492

-- 
Pali Rohár
pali.rohar@...il.com