tree 8c0c23e9d2ccf6aa8d422e1a217f1600d5c5a0de
parent b0c8c265f5615099f8ff044fe63bbf06b729d5cf
author Manoj Iyer <manoj.iyer@canonical.com> 1345654398 -0500
committer Matthias Kaehlcke <mka@google.com> 1433366096 -0700

xhci: Recognize USB 3.0 devices as superspeed at powerup

commit 29d214576f936db627ff62afb9ef438eea18bcd2 upstream.

On Intel Panther Point chipset USB 3.0 devices show up as
high-speed devices on powerup, but after an s3 cycle they are
correctly recognized as SuperSpeed. At powerup switch the port
to xHCI so that USB 3.0 devices are correctly recognized.

BugLink: http://bugs.launchpad.net/bugs/1000424

This patch should be backported to kernels as old as 3.0, that contain
commit ID 69e848c2090aebba5698a1620604c7dccb448684 "Intel xhci: Support
EHCI/xHCI port switching."

Signed-off-by: Manoj Iyer <manoj.iyer@canonical.com>
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>