linux-kernel - Re: [PATCH] usb: dwc3: keystone: switch to use runtime pm

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Date:	Fri, 31 Jan 2014 10:50:40 -0500
From:	Santosh Shilimkar <santosh.shilimkar@...com>
To:	<balbi@...com>
CC:	Grygorii Strashko <grygorii.strashko@...com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	<ivan.khoronzhuk@...com>, <linux-usb@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>,
	<linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] usb: dwc3: keystone: switch to use runtime pm

On Friday 31 January 2014 10:47 AM, Felipe Balbi wrote:
> On Fri, Jan 31, 2014 at 10:43:21AM -0500, Santosh Shilimkar wrote:
>> On Friday 31 January 2014 10:19 AM, Felipe Balbi wrote:
>>> Hi,
>>>
>>> On Fri, Jan 31, 2014 at 03:20:26PM +0200, Grygorii Strashko wrote:
>>>> The Keystone PM management layer has been implemented using PM bus for
>>>> power management clocks. As result, most of Keystone drivers don't need
>>>> to manage clocks directly. They just need to enable runtime PM and use it
>>>> to handle their PM state and clocks.
>>>>
>>>> Hence, remove clock management code and switch to use runtime PM.
>>>>
>>>> Signed-off-by: Grygorii Strashko <grygorii.strashko@...com>
>>>
>>> quite a few weeks back I sent a series enabling runtime pm for all glue
>>> layers. I'll use that version instead, sorry.
>>>
>> That should be fine but you need to drop clk_*() related code
>> from that patch. I assume you will send refresh version of it then.
> 
> why ? it makes no difference if you enable twice and disable twice.
> 
Sure but why do you want to have the clock node handling code in drivers
if it is not needed. Isn't that better ?
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