usb: pci-quirks: Prevent Sony VAIO t-series from switching usb ports
authorMathias Nyman <mathias.nyman@linux.intel.com>
Wed, 28 May 2014 20:18:35 +0000 (23:18 +0300)
committerJiri Slaby <jslaby@suse.cz>
Fri, 20 Jun 2014 15:34:10 +0000 (17:34 +0200)
commited7a0e4033fce15bec2424f3c6a7a5531e8b3203
treeb32808fb0d82c6d4fbf8513c114d74236659049c
parent130f4c5a1899ca488a2c501311d9f5a746330f32
usb: pci-quirks: Prevent Sony VAIO t-series from switching usb ports

commit b38f09ccc3fd453180e96273bf3f34083c30809a upstream.

Sony VAIO t-series machines are not capable of switching usb2 ports over
from Intel EHCI to xHCI controller. If tried the USB2 port will be left
unconnected and unusable.

This patch should be backported to stable kernels as old as 3.12,
that contain the commit 26b76798e0507429506b93cd49f8c4cfdab06896
"Intel xhci: refactor EHCI/xHCI port switching"

Reported-by: Jorge <xxopxe@gmail.com>
Tested-by: Jorge <xxopxe@gmail.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
drivers/usb/host/pci-quirks.c