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path: root/drivers/tty/serial/sunhv.c
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Diffstat (limited to 'drivers/tty/serial/sunhv.c')
-rw-r--r--drivers/tty/serial/sunhv.c35
1 files changed, 20 insertions, 15 deletions
diff --git a/drivers/tty/serial/sunhv.c b/drivers/tty/serial/sunhv.c
index 8d612ab806..7f60679fdd 100644
--- a/drivers/tty/serial/sunhv.c
+++ b/drivers/tty/serial/sunhv.c
@@ -39,10 +39,13 @@ static char *con_read_page;
static int hung_up = 0;
-static void transmit_chars_putchar(struct uart_port *port, struct circ_buf *xmit)
+static void transmit_chars_putchar(struct uart_port *port,
+ struct tty_port *tport)
{
- while (!uart_circ_empty(xmit)) {
- long status = sun4v_con_putchar(xmit->buf[xmit->tail]);
+ unsigned char ch;
+
+ while (kfifo_peek(&tport->xmit_fifo, &ch)) {
+ long status = sun4v_con_putchar(ch);
if (status != HV_EOK)
break;
@@ -51,14 +54,16 @@ static void transmit_chars_putchar(struct uart_port *port, struct circ_buf *xmit
}
}
-static void transmit_chars_write(struct uart_port *port, struct circ_buf *xmit)
+static void transmit_chars_write(struct uart_port *port, struct tty_port *tport)
{
- while (!uart_circ_empty(xmit)) {
- unsigned long ra = __pa(xmit->buf + xmit->tail);
- unsigned long len, status, sent;
+ while (!kfifo_is_empty(&tport->xmit_fifo)) {
+ unsigned long len, ra, status, sent;
+ unsigned char *tail;
+
+ len = kfifo_out_linear_ptr(&tport->xmit_fifo, &tail,
+ UART_XMIT_SIZE);
+ ra = __pa(tail);
- len = CIRC_CNT_TO_END(xmit->head, xmit->tail,
- UART_XMIT_SIZE);
status = sun4v_con_write(ra, len, &sent);
if (status != HV_EOK)
break;
@@ -165,7 +170,7 @@ static int receive_chars_read(struct uart_port *port)
}
struct sunhv_ops {
- void (*transmit_chars)(struct uart_port *port, struct circ_buf *xmit);
+ void (*transmit_chars)(struct uart_port *port, struct tty_port *tport);
int (*receive_chars)(struct uart_port *port);
};
@@ -196,18 +201,18 @@ static struct tty_port *receive_chars(struct uart_port *port)
static void transmit_chars(struct uart_port *port)
{
- struct circ_buf *xmit;
+ struct tty_port *tport;
if (!port->state)
return;
- xmit = &port->state->xmit;
- if (uart_circ_empty(xmit) || uart_tx_stopped(port))
+ tport = &port->state->port;
+ if (kfifo_is_empty(&tport->xmit_fifo) || uart_tx_stopped(port))
return;
- sunhv_ops->transmit_chars(port, xmit);
+ sunhv_ops->transmit_chars(port, tport);
- if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)
+ if (kfifo_len(&tport->xmit_fifo) < WAKEUP_CHARS)
uart_write_wakeup(port);
}