linux-kernel - Re: [PATCH 1/3] platform: x86: dell-rbtn: Dell Airplane Mode Switch driver

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Message-ID: <20141128115457.GT1304@lahna.fi.intel.com>
Date:	Fri, 28 Nov 2014 13:54:57 +0200
From:	Mika Westerberg <mika.westerberg@...ux.intel.com>
To:	Pali Rohár <pali.rohar@...il.com>
Cc:	Matthew Garrett <mjg59@...f.ucam.org>,
	Darren Hart <dvhart@...radead.org>,
	platform-driver-x86@...r.kernel.org, linux-kernel@...r.kernel.org,
	Gabriele Mazzotta <gabriele.mzt@...il.com>,
	Alex Hung <alex.hung@...onical.com>
Subject: Re: [PATCH 1/3] platform: x86: dell-rbtn: Dell Airplane Mode Switch
 driver

On Fri, Nov 28, 2014 at 12:45:55PM +0100, Pali Rohár wrote:
> Hello,
> 
> I will fix all those style problems and add some comments.
> 
> On Friday 28 November 2014 12:33:28 Mika Westerberg wrote:
> > > +	if (ACPI_FAILURE(status))
> > > +		return;
> > > +
> > > +	rfkill_set_states(rfkill, !output, !output);
> > 
> > You can also write it like:
> > 
> > 	if (ACPI_SUCCESS(status))
> > 		rfkill_set_states(rfkill, !output, !output);
> > 
> > which looks better to me at least.
> > 
> 
> In whole module I'm using this style:
> 
> f1();
> if (f1_failed)
> 	return;
> f2()
> if (f2_failed)
> 	return;
> 
> So I would like not to change it for one function.

Fair enough.

> > > +}
> > > +
> > > +static int rbtn_set_block(void *data, bool blocked)
> > > +{
> > > +	/* FIXME: setting soft rfkill cause problems, so disable
> > > it for now */ +	return -EINVAL;
> > > +}
> > > +
> > > +struct rfkill_ops rbtn_ops = {
> > 
> > static? const?
> > 
> 
> Yes, static const should be used.
> 
> > 
> > > +/*** module functions ***/
> > > +
> > > +static int __init rbtn_init(void)
> > > +{
> > > +	return acpi_bus_register_driver(&rbtn_driver);
> > > +}
> > > +
> > > +static void __exit rbtn_exit(void)
> > > +{
> > > +	acpi_bus_unregister_driver(&rbtn_driver);
> > > +}
> > > +
> > > +module_init(rbtn_init);
> > > +module_exit(rbtn_exit);
> > 
> > module_acpi_driver()?
> > 
> 
> No, see PATCH 2/3.

Yeah, I noticed it after I wrote the comment.
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