USART_CR3_DMAR    820 drivers/tty/serial/stm32-usart.c 		cr3 |= USART_CR3_DMAR;
USART_CR3_DMAR   1210 drivers/tty/serial/stm32-usart.c 	stm32_clr_bits(port, ofs->cr3, USART_CR3_DMAR);