On 10/15/2014 6:07 PM, Dmitry Nezhevenko wrote:
On Sat, Oct 11, 2014 at 03:51:47PM +0800, Lu, Baolu wrote:
Hi Dmitry,
Can you please try to disable wakeup of root hub instead of host controller?
Hi,
Sorry for delay. Can you please suggest how to do this?
I always do this with below steps. "lsusb -t" on my machine prints
allen@allen-ivb:/sys/bus/pci/devices/0000:00:14.0/usb3$ lsusb -t
/: Bus 04.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/4p, 5000M
/: Bus 03.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/4p, 480M
|__ Port 3: Dev 2, If 0, Class=Hub, Driver=hub/3p, 12M
|__ Port 1: Dev 3, If 0, Class=Human Interface Device,
Driver=usbhid, 12M
|__ Port 1: Dev 3, If 1, Class=Human Interface Device,
Driver=usbhid, 12M
/: Bus 02.Port 1: Dev 1, Class=root_hub, Driver=ehci-pci/3p, 480M
|__ Port 1: Dev 2, If 0, Class=Hub, Driver=hub/8p, 480M
|__ Port 5: Dev 3, If 0, Class=Human Interface Device,
Driver=usbhid, 1.5M
|__ Port 6: Dev 4, If 0, Class=Human Interface Device,
Driver=usbhid, 1.5M
|__ Port 6: Dev 4, If 1, Class=Human Interface Device,
Driver=usbhid, 1.5M
/: Bus 01.Port 1: Dev 1, Class=root_hub, Driver=ehci-pci/3p, 480M
|__ Port 1: Dev 2, If 0, Class=Hub, Driver=hub/6p, 480M
I want to disable remote wake up of xHC USB2 root hub (/: Bus 03.Port
1: Dev 1, Class=root_hub, Driver=xhci_hcd/4p, 480M).
Find the sys device path of the host controller. (You might need to use
lspci to get the bus/dev/fun of your xHC).
On my machine, it's /sys/bus/pci/devices/0000:00:14.0.
root@allen-ivb:/sys/devices/pci0000:00/0000:00:14.0# echo disabled >
usb3/power/wakeup
Thanks,
-baolu
And should I use mainline 3.17 kernel or one with attached patches?
Please try the latest kernel without extra patches.
I'll back with results tomorrow.
Thanks!
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