linux-kernel - Re: [PATCH 1/1] usb,uhci: add a new tag for virtual uhci devices

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Date:	Mon, 01 Jul 2013 09:11:27 +0800
From:	ZhenHua <zhen-hual@...com>
To:	Alan Stern <stern@...land.harvard.edu>
CC:	gregkh@...uxfoundation.org, linux-usb@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/1] usb,uhci: add a new tag for virtual uhci devices

On 06/28/2013 10:22 PM, Alan Stern wrote:
> On Fri, 28 Jun 2013, Li, Zhen-Hua (USL-China) wrote:
>
>> There was a problem, the warning "Controller not stopped yet".
>> And your last patch for this problem does a wrong thing:
>> It prevents all HP uhci devices from auto-stop, which make HP uhci
>> devices waste more
>> power.
> Do they really waste more power?  Have you measured this?
>
> Is CONFIG_PM enabled in the kernel configuration?
>
>> This is another new problem.
>>
>> I think this should be corrected, so I want to apply it.
> In the last email, you said that your patch did not make the machine
> act different.  Now you say that your patch makes the machine use less
> power.  Which statement is correct?
>
> Alan Stern
>
Let's make it clear:
I said "I don't have a machine that this makes action different",
it does not mean my patch "did not make the machine act different ".

There are many kinds of machines, I have never said "my patch does
not make ALL of them act different".




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