USB: simplify hub_restart() logic
This patch (as1081) straightens out the logic of the hub_restart() routine. Each port of the hub is scanned and the driver makes sure that ports which are supposed to be disabled really _are_ disabled. Any ports with a significant change in status are flagged in hub->change_bits, so that khubd can focus on them without the need to scan all the ports a second time -- which means the hub->activating flag is no longer needed. Also, it is now recognized explicitly that the only reason for resuming a port which was not suspended is to carry out a reset-resume operation, which happens only in a non-CONFIG_USB_SUSPEND setting. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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