linux-kernel - Re: [PATCH v4 1/1] usb: ulpi: ulpi_init should be executed in subsys

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Date:	Thu, 04 Jun 2015 20:31:05 +0800
From:	"Lu, Baolu" <baolu.lu@...ux.intel.com>
To:	Heikki Krogerus <heikki.krogerus@...ux.intel.com>
CC:	David Cohen <david.a.cohen@...ux.intel.com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>, balbi@...com,
	linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org,
	qiuxu.zhuo@...el.com
Subject: Re: [PATCH v4 1/1] usb: ulpi: ulpi_init should be executed in subsys_initcall


On 06/04/2015 08:17 PM, Heikki Krogerus wrote:
> Hi Baolu,
>
> On Thu, May 28, 2015 at 08:50:12AM +0800, Lu, Baolu wrote:
>> On 05/28/2015 12:53 AM, David Cohen wrote:
>>> Hi,
>>>
>>> On Tue, May 26, 2015 at 07:37:02PM -0700, Greg Kroah-Hartman wrote:
>>>> On Wed, May 27, 2015 at 09:45:37AM +0800, Lu Baolu wrote:
>>>>> Phy drivers and the ulpi interface providers depend on the
>>>>> registration of the ulpi bus.  Ulpi registers the bus in
>>>>> module_init(). This could cause unnecessary probe delays.
>>>> What do you mean by "probe delays"?
>>> I believe he meant the bus users' probe delays. i.e. unnecessary
>>> -EPROBE_DEFER happening on ulpi_drivers in case they're registered
>>> before ulpi bus itself.
>>>
>>> Is that correct, Baolu?
>> Yes.
> Could you prepare one more version of this patche with the change log
> included.

Sure. I will resent it soon.

>
>
> Thanks,
>

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