Symbol: USART_RQR_SBKRQ
drivers/tty/serial/stm32-usart.c
1055
stm32_usart_set_bits(port, ofs->rqr, USART_RQR_SBKRQ);
drivers/tty/serial/stm32-usart.c
1057
stm32_usart_clr_bits(port, ofs->rqr, USART_RQR_SBKRQ);