linux-kernel - Re: [PATCH v4] usb: ohci-at91: Forcibly suspend ports while USB suspend

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Message-ID: <Pine.LNX.4.44L0.1606211151380.2250-100000@iolanthe.rowland.org>
Date:	Tue, 21 Jun 2016 11:53:06 -0400 (EDT)
From:	Alan Stern <stern@...land.harvard.edu>
To:	Nicolas Ferre <nicolas.ferre@...el.com>
cc:	Wenyou Yang <wenyou.yang@...el.com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Alexandre Belloni <alexandre.belloni@...e-electrons.com>,
	<linux-kernel@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>, <linux-usb@...r.kernel.org>
Subject: Re: [PATCH v4] usb: ohci-at91: Forcibly suspend ports while USB
 suspend

On Tue, 21 Jun 2016, Nicolas Ferre wrote:

> Le 21/06/2016 03:32, Wenyou Yang a écrit :
> > In order to save power consumption, as a workaround, forcibly suspend
> > the USB PORTA/B/C via setting the SUSPEND_A/B/C bits of OHCI Interrupt
> > Configuration Register in the SFR while OHCI USB suspend.
> > 
> > This suspend operation must be done before the USB clock is disabled,
> > resume after the USB clock is enabled.
> > 
> > Signed-off-by: Wenyou Yang <wenyou.yang@...el.com>
> 
> Acked-by: Nicolas Ferre <nicolas.ferre@...el.com>
> 
> Alan, can you take it as it doesn't have dependency on the at91 material
> anymore.

Sorry, I will not accept this patch until Wenyou Yang answers the 
questions I raised in

	http://marc.info/?l=linux-usb&m=146307669102601&w=2

and

	http://marc.info/?l=linux-usb&m=146541324027407&w=2

Alan Stern