linux-kernel - Re: [PATCH][next] phy: core: make NULL a valid phy reference if !CONFIG_GENERIC

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Message-ID: <533C542F.4020608@ti.com>
Date:	Wed, 2 Apr 2014 14:17:19 -0400
From:	Santosh Shilimkar <santosh.shilimkar@...com>
To:	Greg KH <gregkh@...uxfoundation.org>
CC:	<balbi@...com>, Grygorii Strashko <grygorii.strashko@...com>,
	Kishon Vijay Abraham I <kishon@...com>,
	<linux-kernel@...r.kernel.org>, <linux-usb@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH][next] phy: core: make NULL a valid phy reference if !CONFIG_GENERIC_PHY

On Wednesday 02 April 2014 02:16 PM, Greg KH wrote:
> On Wed, Apr 02, 2014 at 01:53:19PM -0400, Santosh Shilimkar wrote:
>> On Thursday 13 March 2014 05:44 PM, Felipe Balbi wrote:
>>> Hi,
>>>
>>> On Thu, Mar 13, 2014 at 10:20:24AM -0500, Felipe Balbi wrote:
>>>> On Thu, Mar 13, 2014 at 01:11:13PM +0200, Grygorii Strashko wrote:
>>>>> This fixes a regression on Keystone 2 platforms caused by patch
>>>>> 57303488cd37da58263e842de134dc65f7c626d5
>>>>> "usb: dwc3: adapt dwc3 core to use Generic PHY Framework" which adds
>>>>> optional support of generic phy in DWC3 core.
>>>>>
>>>>> On Keystone 2 platforms the USB is not working now because
>>>>> CONFIG_GENERIC_PHY isn't set and, as result, Generic PHY APIs stubs
>>>>> return -ENOSYS always. The log shows:
>>>>>  dwc3 2690000.dwc3: failed to initialize core
>>>>>  dwc3: probe of 2690000.dwc3 failed with error -38
>>>>>
>>>>> Hence, fix it by making NULL a valid phy reference in Generic PHY
>>>>> APIs stubs in the same way as it was done by the patch
>>>>> 04c2facad8fee66c981a51852806d8923336f362 "drivers: phy: Make NULL
>>>>> a valid phy reference".
>>>>>
>>>>> CC: Kishon Vijay Abraham I <kishon@...com>
>>>>> CC: Felipe Balbi <balbi@...com>
>>>>> CC: Santosh Shilimkar <santosh.shilimkar@...com>
>>>>> Signed-off-by: Grygorii Strashko <grygorii.strashko@...com>
>>>>
>>>> nice :-)
>>>>
>>>> Acked-by: Felipe Balbi <balbi@...com>
>>>
>>> Greg, if your tree isn't closed yet, could you consider this patch still
>>> for v3.15 merge window ? Grygorii found a regression on Keystone
>>> platforms which this patch fixes. Let me know if you need the original
>>> patch and myself or Kishon can send it to you.
>>>
>> Just checking whether the fix was picked up for the 3.14 merge window ?
> 
> 3.14 is long released, the merge window for that was months ago.
> 
Sorry for the typo. I mean for upcoming v3.15 merge window.


regards,
Santosh


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