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This patch (as1102) clarifies two points in the USB Gadget kerneldoc: Request completion callbacks are always made with interrupts disabled; Device controllers may not support STALLing the status stage of a control transfer after the data stage is over. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Acked-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>