linux-kernel - Re: [PATCH v1 01/11] drivers: usb: otg: add a new driver for omap usb2 phy

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Message-ID: <CAAe_U6Kx8o6sHgpev3UEAou7tuNDt9iL0+hcyOVDb0WsCsSwKg@mail.gmail.com>
Date:	Tue, 10 Jul 2012 12:18:24 +0530
From:	"ABRAHAM, KISHON VIJAY" <kishon@...com>
To:	Venu Byravarasu <vbyravarasu@...dia.com>
Cc:	Rajendra Nayak <rnayak@...com>,
	"grant.likely@...retlab.ca" <grant.likely@...retlab.ca>,
	"rob.herring@...xeda.com" <rob.herring@...xeda.com>,
	"rob@...dley.net" <rob@...dley.net>,
	"linux@....linux.org.uk" <linux@....linux.org.uk>,
	"gregkh@...uxfoundation.org" <gregkh@...uxfoundation.org>,
	"b-cousson@...com" <b-cousson@...com>,
	"tony@...mide.com" <tony@...mide.com>,
	"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>,
	"balbi@...com" <balbi@...com>,
	"linux-omap@...r.kernel.org" <linux-omap@...r.kernel.org>,
	"linux-usb@...r.kernel.org" <linux-usb@...r.kernel.org>,
	"hvaibhav@...com" <hvaibhav@...com>
Subject: Re: [PATCH v1 01/11] drivers: usb: otg: add a new driver for omap
 usb2 phy

Hi,

On Tue, Jul 10, 2012 at 11:33 AM, Venu Byravarasu
<vbyravarasu@...dia.com> wrote:
>> > +
>> > +#ifdef CONFIG_PM
>
> Should it not be CONFIG_PM_SLEEP instead of just CONFIG_PM?

Why? I think we should have CONFIG_PM_SLEEP only when we have
*suspend*, *resume* hooks. But this driver has only *runtime_suspend*
and *runtime_resume* hooks.
>
>> > +
>> > +static int omap_usb2_runtime_suspend(struct device *dev)
>> > +{
>> > +   struct platform_device  *pdev = to_platform_device(dev);
>> > +   struct omap_usb *phy = platform_get_drvdata(pdev);
>> > +
>
>
>> > +static int __init usb2_omap_init(void)
>> > +{
>> > +   return platform_driver_register(&omap_usb2_driver);
>> > +}
>> > +arch_initcall(usb2_omap_init);
>> > +
>> > +static void __exit usb2_omap_exit(void)
>> > +{
>> > +   platform_driver_unregister(&omap_usb2_driver);
>> > +}
>> > +module_exit(usb2_omap_exit);
>> > +
>
> Do you really need arch_initcall here?
> If not, then you can replace above two function calls with module_platform_driver().

I indeed want it to be arch_initcall. When the module is built-in, I
want this module to loaded before twl6030-usb.c

Thanks
Kishon
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