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serial: Add common rs485 device tree parsing function
authorUwe Kleine-König <u.kleine-koenig@pengutronix.de>
Wed, 13 Sep 2017 08:18:27 +0000 (10:18 +0200)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Mon, 18 Sep 2017 16:36:25 +0000 (18:36 +0200)
commitef838a81dd4de1e08454406812e42d7b9b417c4d
treef4b6199f8e7add38f65e5dd62a0c425db7c9fec2
parentc45e2d2547cb2ba0ee8391d8cb2fd2f7cdc016f5
serial: Add common rs485 device tree parsing function

Several drivers have the same device tree parsing code. Create
a common helper function for it.

This patch bases on work done by Sascha Hauer.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/tty/serial/serial_core.c
include/linux/serial_core.h