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| H A D | stm32-usart.c | diff 037b91ec7729524107982e36ec4b40f9b174f7a2 Tue Jan 11 10:44:41 CST 2022 Valentin Caron <valentin.caron@foss.st.com> serial: stm32: fix software flow control transfer
x_char is ignored by stm32_usart_start_tx() when xmit buffer is empty.
Fix start_tx condition to allow x_char to be sent.
Fixes: 48a6092fb41f ("serial: stm32-usart: Add STM32 USART Driver")
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Erwan Le Ray <erwan.leray@foss.st.com>
Signed-off-by: Valentin Caron <valentin.caron@foss.st.com>
Link: https://lore.kernel.org/r/20220111164441.6178-3-valentin.caron@foss.st.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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