• Alan Stern's avatar
    USB: add power/persist device attribute · b41a60ec
    Alan Stern authored
    
    
    This patch (as920) adds an extra level of protection to the
    USB-Persist facility.  Now it will apply by default only to hubs; for
    all other devices the user must enable it explicitly by setting the
    power/persist device attribute.
    
    The disconnect_all_children() routine in hub.c has been removed and
    its code placed inline.  This is the way it was originally as part of
    hub_pre_reset(); the revised usage in hub_reset_resume() is
    sufficiently different that the code can no longer be shared.
    Likewise, mark_children_for_reset() is now inline as part of
    hub_reset_resume().  The end result looks much cleaner than before.
    
    The sysfs interface is updated to add the new attribute file, and
    there are corresponding documentation updates.
    Signed-off-by: default avatarAlan Stern <stern@rowland.harvard.edu>
    Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
    b41a60ec
hub.c 84 KB