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serial: atmel: fix error handling when mctrl_gpio_init fails
authorUwe Kleine-König <u.kleine-koenig@pengutronix.de>
Thu, 12 Feb 2015 14:24:38 +0000 (15:24 +0100)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Sat, 7 Mar 2015 02:15:03 +0000 (03:15 +0100)
mctrl_gpio_init at present doesn't return NULL. (It might be used in the
future when no gpios are to be used indicating success.) Properly pass
error returned and also make driver probing fail on error.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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