linux-kernel - Re: [PATCH v7 2/9] usb: phy: omap-usb2: use the new generic PHY framework

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Date:	Tue, 18 Jun 2013 13:00:14 +0300
From:	Felipe Balbi <balbi@...com>
To:	Kishon Vijay Abraham I <kishon@...com>
CC:	<balbi@...com>, <grant.likely@...aro.org>, <tony@...mide.com>,
	<arnd@...db.de>, <swarren@...dia.com>,
	<sylvester.nawrocki@...il.com>, <linux-kernel@...r.kernel.org>,
	<linux-omap@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>,
	<linux-usb@...r.kernel.org>, <gregkh@...uxfoundation.org>,
	<akpm@...ux-foundation.org>, <rob.herring@...xeda.com>,
	<rob@...dley.net>, <b-cousson@...com>, <linux@....linux.org.uk>,
	<benoit.cousson@...aro.org>, <mchehab@...hat.com>,
	<cesarb@...arb.net>, <davem@...emloft.net>, <rnayak@...com>,
	<shawn.guo@...aro.org>, <santosh.shilimkar@...com>,
	<devicetree-discuss@...ts.ozlabs.org>, <linux-doc@...r.kernel.org>,
	<nsekhar@...com>
Subject: Re: [PATCH v7 2/9] usb: phy: omap-usb2: use the new generic PHY
 framework

Hi,

On Tue, Jun 18, 2013 at 03:26:23PM +0530, Kishon Vijay Abraham I wrote:
> >>>On Thu, Jun 13, 2013 at 02:13:52PM +0530, Kishon Vijay Abraham I wrote:
> >>>>@@ -159,6 +191,12 @@ static int omap_usb2_probe(struct platform_device *pdev)
> >>>>  	otg->start_srp		= omap_usb_start_srp;
> >>>>  	otg->phy		= &phy->phy;
> >>>>
> >>>>+	pm_runtime_enable(phy->dev);
> >>>
> >>>enabling pm_runtime here has the potential to cause a real big problem.
> >>>How have you tested this patch ?
> >>
> >>performed boot and enumeration testing. What issue do you expect here?
> >
> >hint: look at drvdata usage around the driver. Where is it initialized ?
> >Where is it used ?
> 
> hmm.. since runtime_get calls weren't made very early, I think I dint
> see any issues. Thanks for pointing this.

right, no problem. BTW, you don't get to_platform_device() ->
platform_get_drvdata(). A simple dev_get_drvdata() is sufficient :-)

-- 
balbi

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