linux-kernel - Re: [PATCH] sh: maple: add support for Maple controller as a joystick

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Message-Id: <1229994455.22856.61.camel@brick>
Date:	Mon, 22 Dec 2008 17:07:35 -0800
From:	Harvey Harrison <harvey.harrison@...il.com>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	Adrian McMenamin <adrian@...golddream.dyndns.info>,
	linux-kernel@...r.kernel.org, dmitry.torokhov@...il.com,
	linux-sh@...r.kernel.org, lethal@...ux-sh.org
Subject: Re: [PATCH] sh: maple: add support for Maple controller as a
 joystick

On Mon, 2008-12-22 at 15:06 -0800, Andrew Morton wrote:
> On Fri, 19 Dec 2008 23:15:42 +0000
> Adrian McMenamin <adrian@...golddream.dyndns.info> wrote:
> 
> > Not sure what happened with earlier submissions, so here is an up-to-date
> > patch for the Dreamcast Maple controlled.
> > 
> > 
> > Add support for the SEGA Dreamcast Maple controller as a joystick
> > 
> > ...
> >
> > +static void dc_pad_callback(struct mapleq *mq)
> > +{
> > +	unsigned short buttons;
> > +	struct maple_device *mapledev = mq->dev;
> > +	struct dc_pad *pad = maple_get_drvdata(mapledev);
> > +	struct input_dev *dev = pad->dev;
> > +	unsigned char *res = mq->recvbuf;
> > +
> > +	buttons = ~cpu_to_le16(*(unsigned short *)(res + 8));
> 
> hm, could that be simplified?

And as a bonus fix the obvious sparse warning:

	buttons = ~le16_to_cpup((__le16 *)(res + 8));

Cheers,

Harvey

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