USART_CR3_RXFTCFG_MASK  610 drivers/tty/serial/stm32-usart.c 		val &= ~(USART_CR3_TXFTCFG_MASK | USART_CR3_RXFTCFG_MASK);
USART_CR3_RXFTCFG_MASK  714 drivers/tty/serial/stm32-usart.c 	cr3 &= USART_CR3_TXFTIE | USART_CR3_RXFTCFG_MASK | USART_CR3_RXFTIE