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

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Message-ID: <51C02EC7.7060908@ti.com>
Date:	Tue, 18 Jun 2013 15:26:23 +0530
From:	Kishon Vijay Abraham I <kishon@...com>
To:	<balbi@...com>
CC:	<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 Tuesday 18 June 2013 03:20 PM, Felipe Balbi wrote:
> Hi,
>
> On Tue, Jun 18, 2013 at 03:19:03PM +0530, Kishon Vijay Abraham I wrote:
>> Hi,
>>
>> On Tuesday 18 June 2013 03:10 PM, Felipe Balbi wrote:
>>> Hi,
>>>
>>> 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.

Thanks
Kishon
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