serial: core: set missing supported flag for RX during TX GPIO

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commit 1a33e33ca0 upstream.

If the RS485 feature RX-during-TX is supported by means of a GPIO set the
according supported flag. Otherwise setting this feature from userspace may
not be possible, since in uart_sanitize_serial_rs485() the passed RS485
configuration is matched against the supported features and unsupported
settings are thereby removed and thus take no effect.

Cc:  <stable@vger.kernel.org>
Fixes: 163f080eb7 ("serial: core: Add option to output RS485 RX_DURING_TX state via GPIO")
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Lino Sanfilippo <l.sanfilippo@kunbus.com>
Link: https://lore.kernel.org/r/20240103061818.564-3-l.sanfilippo@kunbus.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Lino Sanfilippo 2024-01-03 07:18:13 +01:00 • committed by Greg Kroah-Hartman

parent c294a899dc

commit cecfbbde2b

1 changed files with 2 additions and 0 deletions

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drivers/tty/serial/serial_core.c

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