xhci: free xhci virtual devices with leaf nodes first
authorMathias Nyman <mathias.nyman@linux.intel.com>
Tue, 3 Jan 2017 16:28:43 +0000 (18:28 +0200)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Tue, 3 Jan 2017 16:37:32 +0000 (17:37 +0100)
commitee8665e28e8d90ce69d4abe5a469c14a8707ae0e
treebfbcdd5a93b2a1d1f2d3425535fe74aa448ea30d
parent8d6bbff67796262b5296b745989e4c9d9f2b4894
xhci: free xhci virtual devices with leaf nodes first

the tt_info provided by a HS hub might be in use to by a child device
Make sure we free the devices in the correct order.

This is needed in special cases such as when xhci controller is
reset when resuming from hibernate, and all virt_devices are freed.

Also free the virt_devices starting from max slot_id as children
more commonly have higher slot_id than parent.

CC: <stable@vger.kernel.org>
Reported-by: Guenter Roeck <groeck@chromium.org>
Tested-by: Guenter Roeck <groeck@chromium.org>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/usb/host/xhci-mem.c