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When 7c7f9bc986e6 ("serial: Deassert Transmit Enable on probe in
driver-specific way") got backported to 5.10.y, there known as
26a2b9c468de, some hunks were accidentally left out.
In serial_core.c, it is possible that the omission in
uart_suspend_port() is harmless, but the backport did have the
corresponding hunk in uart_resume_port(), it runs counter to the
original commit's intention of
Skip any invocation of ->set_mctrl() if RS485 is enabled.
and it's certainly better to be aligned with upstream.
Link: https://lkml.kernel.org/r/20221222114414.1886632-1-linux@rasmusvillemoes.dk
Fixes: 26a2b9c468de ("serial: Deassert Transmit Enable on probe in driver-specific way")
Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
[the fsl_lpuart part of the 5.15 patch is not required on 5.10,
because the code before 26a2b9c468de was incorrectly not calling
uart_remove_one_port on failed_get_rs485]
Signed-off-by: Dominique Martinet <dominique.martinet@atmark-techno.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
f5ef26276b