Ilpo Järvinen cd74c5e355 serial: cpm_uart: Use uart_circ_empty()
Use uart_circ_empty() instead of open coding it.

Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Link: https://lore.kernel.org/r/20230320135009.47170-2-ilpo.jarvinen@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-03-29 10:53:57 +02:00
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