• Alan Stern's avatar
    USB: move bus_suspend and bus_resume method calls · b6f6436d
    Alan Stern authored
    This patch (as885) moves the root-hub bus_suspend() and bus_resume()
    method calls from the hub driver's suspend and resume methods into the
    usb_generic driver methods, where they make just as much sense.
    Their old locations were not fully correct.  For example, in a kernel
    compiled without CONFIG_USB_SUSPEND, if one were to do:
    	echo -n 1-0:1.0 >/sys/bus/usb/drivers/hub/unbind
    to unbind the hub driver from a root hub, there would then be no way
    to suspend that root hub.  Attempts to put the system to sleep would
    fail; the USB controller driver would refuse to suspend because the
    root hub was still active.
    The patch also makes a very slight change in the way devices with no
    driver are handled during suspend.  Rather than doing a standard USB
    port-suspend directly, now the suspend routine in usb_generic is
    called.  In practice this should never affect anyone.
    Signed-off-by: default avatarAlan Stern <stern@rowland.harvard.edu>
    Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
hub.c 83.1 KB