linux-kernel - Re: [PATCH] w1-gpio: Add GPIO w1 bus master driver

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Date:	Thu, 3 Jan 2008 14:58:58 +0100
From:	Haavard Skinnemoen <hskinnemoen@...el.com>
To:	Ville Syrjälä <syrjala@....fi>
Cc:	Evgeniy Polyakov <johnpol@....mipt.ru>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] w1-gpio: Add GPIO w1 bus master driver

On Thu, 3 Jan 2008 15:48:35 +0200
Ville Syrjälä <syrjala@....fi> wrote:

> On Wed, Dec 26, 2007 at 11:24:54PM +0100, Haavard Skinnemoen wrote:
> > On Fri, 21 Dec 2007 09:34:01 +0200
> > Ville Syrjala <syrjala@....fi> wrote:
> > 
> > > +static struct platform_device foo_w1_device = {
> > > +	.name			= "w1-gpio",
> > > +	.id			= -1,
> > 
> > Assigning -1 to a u32 member isn't a very nice example. What does it
> > mean anyway?
> 
> id is 'int'. The bus_name won't include the id when -1 is used.

Ah, indeed. I was looking at 2.6.23, where it is u32.

> > ...call platform_driver_probe(&w1_gpio_driver, w1_gpio_probe) here.
> 
> I was wondering what platform_driver_probe() was for but never bothered
> to read the code. I'll change the code to use it.
> 
> I already sent an updated patch but forgot to send this reply.

I saw it. Thanks :)

Haavard
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