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H A Dserial_mctrl_gpio.cdiff d11df61853f1d45035b7f5a6702c9b48d5f09a49 Fri Apr 29 10:45:07 CEST 2016 Yegor Yefremov <yegorslists@googlemail.com> serial: mctrl_gpio: add IRQ locking

uart_handle_cts_change should be called with port->lock held. And for
this to be save you must also disable irqs.

Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Yegor Yefremov <yegorslists@googlemail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>