if (up->port.info == NULL)
goto ack_tx_int;
xmit = &up->port.info->xmit;
- if (uart_circ_empty(xmit)) {
- uart_write_wakeup(&up->port);
+ if (uart_circ_empty(xmit))
goto ack_tx_int;
- }
+
if (uart_tx_stopped(&up->port))
goto ack_tx_int;
static __inline__ unsigned char sunzilog_read_channel_status(struct uart_port *port)
{
struct zilog_channel __iomem *channel;
- unsigned long flags;
unsigned char status;
- spin_lock_irqsave(&port->lock, flags);
-
channel = ZILOG_CHANNEL_FROM_PORT(port);
status = sbus_readb(&channel->control);
ZSDELAY();
- spin_unlock_irqrestore(&port->lock, flags);
-
return status;
}
/* The port lock is not held. */
static unsigned int sunzilog_tx_empty(struct uart_port *port)
{
+ unsigned long flags;
unsigned char status;
unsigned int ret;
+ spin_lock_irqsave(&port->lock, flags);
+
status = sunzilog_read_channel_status(port);
+
+ spin_unlock_irqrestore(&port->lock, flags);
+
if (status & Tx_BUF_EMP)
ret = TIOCSER_TEMT;
else
return ret;
}
-/* The port lock is not held. */
+/* The port lock is held and interrupts are disabled. */
static unsigned int sunzilog_get_mctrl(struct uart_port *port)
{
unsigned char status;
}
/* The port lock is held and interrupts are disabled. */
-static void sunzilog_stop_tx(struct uart_port *port, unsigned int tty_stop)
+static void sunzilog_stop_tx(struct uart_port *port)
{
struct uart_sunzilog_port *up = (struct uart_sunzilog_port *) port;
}
/* The port lock is held and interrupts are disabled. */
-static void sunzilog_start_tx(struct uart_port *port, unsigned int tty_start)
+static void sunzilog_start_tx(struct uart_port *port)
{
struct uart_sunzilog_port *up = (struct uart_sunzilog_port *) port;
struct zilog_channel __iomem *channel = ZILOG_CHANNEL_FROM_PORT(port);