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

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Date:	Fri, 22 Feb 2013 11:43:18 -0500
From:	Dave Jones <davej@...hat.com>
To:	Lan Tianyu <tianyu.lan@...el.com>
Cc:	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
Subject: Re: [GIT PATCH] USB patches for 3.9-rc1

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

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

	Dave

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