USART_CR3_TXFTCFG_MASK  610 drivers/tty/serial/stm32-usart.c 		val &= ~(USART_CR3_TXFTCFG_MASK | USART_CR3_RXFTCFG_MASK);
USART_CR3_TXFTCFG_MASK  715 drivers/tty/serial/stm32-usart.c 		| USART_CR3_TXFTCFG_MASK;