[coreboot-gerrit] Patch merged into coreboot/master: 32d2e2b intel/lynxpoint: Work around XHCI resume issues

[gerrit at coreboot.org]

the following patch was just integrated into master:
commit 32d2e2b3608006b615521eb68f011aa72f44171e
Author: Duncan Laurie <dlaurie at chromium.org>
Date:   Wed Sep 25 14:08:32 2013 -0700

    intel/lynxpoint: Work around XHCI resume issues
    
    When USB3 devices are attached while in suspend, or two USB3 devices
    that are both plugged in are switched to the other port while in
    suspend the kernel does not seem to notice this -- despite the cold
    attach status bit.  This results in the devices showing up in the USB
    list at the old enumerated device numbers and higher layers continuing
    to think they are present but not reseponding.
    
    With the kernel workaround to deal with devices that are logically
    disconnected it is possible for firmware to send a warm port reset to
    devices that are in this state and then the kernel will see them disappear
    and handle it properly.
    
    This same issue exists in the EFI firmware on the Whitetip Mountain 2
    reference board so it is not specifically a coreboot bug.  If this
    behavior is fixed in the kernel then this workaround could be removed
    since it is in RW firmware.
    
    BUG=chrome-os-partner:22818
    BRANCH=falco,peppy,wolf,leon
    TEST=manual:
    
    1) attach two USB3 devices
    2) suspend system
    3) switch the ports that the USB3 devices are attatched to
    4) resume system
    5) confirm that the devices are re-enumerated and come up properly
    
    Original-Change-Id: Ifba3ffc94a06dc0b2436d7d7d464d824657362af
    Signed-off-by: Duncan Laurie <dlaurie at chromium.org>
    Reviewed-on: https://chromium-review.googlesource.com/170335
    Reviewed-by: Aaron Durbin <adurbin at chromium.org>
    (cherry picked from commit 203d200268f4af6445224962190cbc66ad2a83e4)
    
    Change-Id: I54fd2847ee25a60f25c2cefebdc1a3c18455464a
    Signed-off-by: Duncan Laurie <dlaurie at chromium.org>
    Reviewed-on: https://chromium-review.googlesource.com/170579
    [pm: rebase to master branch of coreboot upstream]
    Signed-off-by: Paul Menzel <paulepanter at users.sourceforge.net>
    Reviewed-on: http://review.coreboot.org/6017
    Tested-by: build bot (Jenkins)
    Reviewed-by: Patrick Georgi <patrick at georgi-clan.de>


See http://review.coreboot.org/6017 for details.

-gerrit