linux-kernel - Re: [RFC PATCH 1/6] Introduce acpi_match_device

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Message-ID: <20121002061005.GN15548@intel.com>
Date:	Tue, 2 Oct 2012 09:10:05 +0300
From:	Mika Westerberg <mika.westerberg@...ux.intel.com>
To:	"Zhang, Rui" <rui.zhang@...el.com>
Cc:	LKML <linux-kernel@...r.kernel.org>,
	linux-pm <linux-pm@...ts.linux-foundation.org>,
	linux-i2c <linux-i2c@...r.kernel.org>,
	"linux-acpi@...r.kernel.org" <linux-acpi@...r.kernel.org>,
	"Len, Brown" <lenb@...nel.org>, "Rafael J. Wysocki" <rjw@...k.pl>,
	Grant Likely <grant.likely@...retlab.ca>,
	Dirk Brandewie <dirk.brandewie@...il.com>
Subject: Re: [RFC PATCH 1/6] Introduce acpi_match_device_id().

On Mon, Oct 01, 2012 at 01:56:17PM +0000, Zhang, Rui wrote:
> 
> 
> > -----Original Message-----
> > From: Mika Westerberg [mailto:mika.westerberg@...ux.intel.com]
> > Sent: Monday, October 01, 2012 2:38 PM
> > To: Zhang, Rui
> > Cc: LKML; linux-pm; linux-i2c; linux-acpi@...r.kernel.org; Len, Brown;
> > Rafael J. Wysocki; Grant Likely; Dirk Brandewie
> > Subject: Re: [RFC PATCH 1/6] Introduce acpi_match_device_id().
> > Importance: High
> > 
> > On Sat, Sep 29, 2012 at 01:31:52PM +0000, Zhang, Rui wrote:
> > >
> > > > > +{
> > > > > +	acpi_handle handle = DEVICE_ACPI_HANDLE(dev);
> > > >
> > > > If the device is not bound to an ACPI handle this will return NULL.
> > > > And I don't see you doing that in this series meaning that..
> > > >
> > >
> > >
> > > You're right, I should set pdev->archdata.acpi_handle to the I2C
> > > controller in i2c_root.c.
> > 
> > There already is an API for that - check drivers/acpi/glue.c.
> 
> Do you mean acpi_bind?

No, I mean register_acpi_bus_type(). You can see an example of this looking
PCI, USB, .., drivers.
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