serial: 8250_of: fix return code when probe function fails to get reset

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commit b9820a3169 upstream.

The error pointer from devm_reset_control_get_optional_shared() is
not propagated.

One of the most common problem scenarios is it returns -EPROBE_DEFER
when the reset controller has not probed yet.  In this case, the
probe of the reset consumer should be deferred.

Fixes: e2860e1f62 ("serial: 8250_of: Add reset support")
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

...

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Masahiro Yamada 2017-12-27 14:21:05 +09:00 • committed by Greg Kroah-Hartman

parent 4e45815fcd

commit 970aeba3f3

1 changed files with 4 additions and 1 deletions

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drivers/tty/serial/8250/8250_of.c

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