static void mvebu_uart_start_tx(struct uart_port *port)
{
unsigned int ctl;
- struct circ_buf *xmit = &port->state->xmit;
+ unsigned char c;
- if (IS_EXTENDED(port) && !uart_circ_empty(xmit)) {
- writel(xmit->buf[xmit->tail], port->membase + UART_TSH(port));
- uart_xmit_advance(port, 1);
- }
+ if (IS_EXTENDED(port) && uart_fifo_get(port, &c))
+ writel(c, port->membase + UART_TSH(port));
ctl = readl(port->membase + UART_INTR(port));
ctl |= CTRL_TX_RDY_INT(port);