linux-kernel - Re: [GIT PATCH] USB patches for 3.9-rc1

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Date:	Sat, 23 Feb 2013 01:02:11 +0800
From:	Lan Tianyu <tianyu.lan@...el.com>
To:	Dave Jones <davej@...hat.com>,
	Greg KH <gregkh@...uxfoundation.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, linux-usb@...r.kernel.org,
	Lan Tianyu <lantianyu1986@...il.com>
Subject: Re: [GIT PATCH] USB patches for 3.9-rc1

On 2013/2/23 0:43, Dave Jones wrote:
> On Fri, Feb 22, 2013 at 05:51:10PM +0800, Lan Tianyu wrote:
>
>   > >   > Nothing major, lots of gadget fixes, and of course, xhci stuff.
>   > >
>   > > I get no USB devices recognised when I insert them any more, which
>   > > I think is pretty major.  I suspect it has something to do with this ?
>   > >
>   > >   > Lan Tianyu (12):
>   > >   >       usb: add runtime pm support for usb port device
>   > >   >       usb: add usb port auto power off mechanism
>   > >
>   > > It looks like every port on my laptop is powered down, as I can't
>   > > even charge devices with it.
>   >
>   > 	Do you enable the port/power/pm_qos_no_power_off?
>   > 	cat /sys/bus/usb/devices/(dev)/port/power/pm_qos_no_power_off to show.
>
> /sys/bus/usb/devices/1-1.4/port/power/pm_qos_no_power_off:1
> /sys/bus/usb/devices/1-1.6/port/power/pm_qos_no_power_off:1
> /sys/bus/usb/devices/1-1/port/power/pm_qos_no_power_off:1
> /sys/bus/usb/devices/2-1/port/power/pm_qos_no_power_off:1
>
At last, this mean usb port power off mechanism should not work.

> I changed them to 0, made no difference.
>
>   > > What can I do to debug this ?
>   > 	Can you attach the output of dmesg with CONFIG_USB_DEBUG?
>
> http://paste.fedoraproject.org/3620
How about"sudo lsusb -s 1:1 -v" or "2:1"?
>
> 	Dave
>

-- 
Best Regards
Tianyu Lan
linux kernel enabling team
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