831  * uart_xmit_advance - Advance xmit buffer and account Tx'ed chars
833  * @chars: number of characters sent
836  * @chars transmitted and handles accounting of transmitted bytes (into
839 static inline void uart_xmit_advance(struct uart_port *up, unsigned int chars)  in uart_xmit_advance()  argument
843 	kfifo_skip_count(&tport->xmit_fifo, chars);  in uart_xmit_advance()
844 	up->icount.tx += chars;  in uart_xmit_advance()
848 		unsigned char *buf, unsigned int chars)  in uart_fifo_out()  argument
852 	chars = kfifo_out(&tport->xmit_fifo, buf, chars);  in uart_fifo_out()
853 	up->icount.tx += chars;  in uart_fifo_out()
855 	return chars;  in uart_fifo_out()
862 	unsigned int chars;  in uart_fifo_get()  local
864 	chars = kfifo_get(&tport->xmit_fifo, ch);  in uart_fifo_get()
865 	up->icount.tx += chars;  in uart_fifo_get()
867 	return chars;  in uart_fifo_get()