linux-kernel - RE: [PATCH V2 1/6] pinctrl: pinctrl-single: use arch_initcall and module

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Date:	Tue, 29 Jan 2013 12:02:54 +0000
From:	"Vishwanathrao Badarkhe, Manish" <manishv.b@...com>
To:	Linus Walleij <linus.walleij@...aro.org>
CC:	"devicetree-discuss@...ts.ozlabs.org" 
	<devicetree-discuss@...ts.ozlabs.org>,
	"linux-doc@...r.kernel.org" <linux-doc@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	"davinci-linux-open-source@...ux.davincidsp.com" 
	<davinci-linux-open-source@...ux.davincidsp.com>,
	"AnilKumar, Chimata" <anilkumar@...com>,
	"tony@...mide.com" <tony@...mide.com>, "hs@...x.de" <hs@...x.de>,
	"broonie@...nsource.wolfsonmicro.com" 
	<broonie@...nsource.wolfsonmicro.com>,
	"sameo@...ux.intel.com" <sameo@...ux.intel.com>,
	"khilman@...prootsystems.com" <khilman@...prootsystems.com>,
	"Nori, Sekhar" <nsekhar@...com>,
	"linux@....linux.org.uk" <linux@....linux.org.uk>,
	"rob@...dley.net" <rob@...dley.net>,
	"rob.herring@...xeda.com" <rob.herring@...xeda.com>,
	"grant.likely@...retlab.ca" <grant.likely@...retlab.ca>
Subject: RE: [PATCH V2 1/6] pinctrl: pinctrl-single: use arch_initcall and
 module_exit

Hi Linus,

On Tue, Jan 29, 2013 at 16:29:54, Linus Walleij wrote:
> On Tue, Jan 29, 2013 at 8:38 AM, Vishwanathrao Badarkhe, Manish <manishv.b@...com> wrote:
> 
> > Currently, I2C driver gets probed before pinctrl driver.
> > To achieve I2C pin muxing via pinctrl driver before I2C probe get 
> > called, register pinctrl driver in arch_initcall.
> > Also, add module_exit to unregister pinctrl driver.
> >
> > Signed-off-by: Vishwanathrao Badarkhe, Manish <manishv.b@...com>
> 
> So your I2C driver is not returning -EPROBE_DEFER if it cannot find its pins?
Yes. In Davinci I2C driver, it's not implemented to return -EPROBE_DEFER if it 
can't find its pins.

Please see below discussion for more details: 
https://patchwork2.kernel.org/patch/2031321/
 
> 
> Hm, well I can live with this, if Tony ACKs it.
> 
> Yours,
> Linus Walleij
> 


Regards, 
Manish
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