Commit f798634d authored by David S. Miller's avatar David S. Miller
Browse files

[SERIAL] SUNHV: Fix jerky console on LDOM guests. 



Mixing putchar() and write() hvcalls does not work %100
correctly.  But we should be using write() all the time
if we can, even from ->start_tx(), anyways.

Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 778feeb4

drivers/serial/sunhv.c

+1 −11
Original line number Diff line number Diff line
@@ -258,17 +258,7 @@ static void sunhv_stop_tx(struct uart_port *port) 
/* port->lock held by caller.  */

static void sunhv_start_tx(struct uart_port *port)

{

	struct circ_buf *xmit = &port->info->xmit;



	while (!uart_circ_empty(xmit)) {

		long status = sun4v_con_putchar(xmit->buf[xmit->tail]);



		if (status != HV_EOK)

			break;



		xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1);

		port->icount.tx++;

	}

	transmit_chars(port);

}



/* port->lock is not held.  */