xhci: Fix resume issues on Renesas chips in Samsung laptops
authorSarah Sharp <sarah.a.sharp@linux.intel.com>
Fri, 17 Jan 2014 23:38:12 +0000 (15:38 -0800)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Mon, 31 Mar 2014 16:58:14 +0000 (09:58 -0700)
commitd04ff9c036a8481b8a1534b8b4b65757f3bfa53e
treec3a34d42bcfa2815138c356e1a15da13e9588315
parentc16d2409ed27ae4fabcf608e48725e1618e76064
xhci: Fix resume issues on Renesas chips in Samsung laptops

commit 1aa9578c1a9450fb21501c4f549f5b1edb557e6d upstream.

Don Zickus <dzickus@redhat.com> writes:

Some co-workers of mine bought Samsung laptops that had mostly usb3 ports.
Those ports did not resume correctly (the driver would timeout communicating
and fail).  This led to frustration as suspend/resume is a common use for
laptops.

Poking around, I applied the reset on resume quirk to this chipset and the
resume started working.  Reloading the xhci_hcd module had been the temporary
workaround.

Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Reported-by: Don Zickus <dzickus@redhat.com>
Tested-by: Prarit Bhargava <prarit@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/usb/host/xhci-pci.c