• Mathias Nyman's avatar
    xhci: fix 10 second timeout on removal of PCI hotpluggable xhci controllers · 98d74f9c
    Mathias Nyman authored
    PCI hotpluggable xhci controllers such as some Alpine Ridge solutions will
    remove the xhci controller from the PCI bus when the last USB device is
    disconnected.
    
    Add a flag to indicate that the host is being removed to avoid queueing
    configure_endpoint commands for the dropped endpoints.
    For PCI hotplugged controllers this will prevent 5 second command timeouts
    For static xhci controllers the configure_endpoint command is not needed
    in the removal case as everything will be returned, freed, and the
    controller is reset.
    
    For now the flag is only set for PCI connected host controllers.
    
    Cc: <stable@vger.kernel.org>
    Signed-off-by: default avatarMathias Nyman <mathias.nyman@linux.intel.com>
    Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
    98d74f9c
xhci-ring.c 129 KB