unsigned long flags;
spin_lock_irqsave(&port->lock, flags);
- port->ops->stop_tx(port, 1);
+ port->ops->stop_tx(port);
spin_unlock_irqrestore(&port->lock, flags);
}
if (!uart_circ_empty(&state->info->xmit) && state->info->xmit.buf &&
!tty->stopped && !tty->hw_stopped)
- port->ops->start_tx(port, 1);
+ port->ops->start_tx(port);
}
static void uart_start(struct tty_struct *tty)
* once we have successfully opened the port. Also set
* up the tty->alt_speed kludge
*/
- if (info->tty)
- set_bit(TTY_IO_ERROR, &info->tty->flags);
+ set_bit(TTY_IO_ERROR, &info->tty->flags);
if (port->type == PORT_UNKNOWN)
return 0;
port->x_char = ch;
if (ch) {
spin_lock_irqsave(&port->lock, flags);
- port->ops->start_tx(port, 0);
+ port->ops->start_tx(port);
spin_unlock_irqrestore(&port->lock, flags);
}
}
spin_lock_irqsave(&state->port->lock, flags);
if (!(state->port->ops->get_mctrl(state->port) & TIOCM_CTS)) {
tty->hw_stopped = 1;
- state->port->ops->stop_tx(state->port, 0);
+ state->port->ops->stop_tx(state->port);
}
spin_unlock_irqrestore(&state->port->lock, flags);
}
struct uart_ops *ops = port->ops;
spin_lock_irq(&port->lock);
- ops->stop_tx(port, 0);
+ ops->stop_tx(port);
ops->set_mctrl(port, 0);
ops->stop_rx(port);
spin_unlock_irq(&port->lock);
uart_change_speed(state, NULL);
spin_lock_irq(&port->lock);
ops->set_mctrl(port, port->mctrl);
- ops->start_tx(port, 0);
+ ops->start_tx(port);
spin_unlock_irq(&port->lock);
}
static inline void
uart_report_port(struct uart_driver *drv, struct uart_port *port)
{
- printk("%s%d", drv->dev_name, port->line);
- printk(" at ");
+ char address[64];
+
switch (port->iotype) {
case UPIO_PORT:
- printk("I/O 0x%x", port->iobase);
+ snprintf(address, sizeof(address),
+ "I/O 0x%x", port->iobase);
break;
case UPIO_HUB6:
- printk("I/O 0x%x offset 0x%x", port->iobase, port->hub6);
+ snprintf(address, sizeof(address),
+ "I/O 0x%x offset 0x%x", port->iobase, port->hub6);
break;
case UPIO_MEM:
case UPIO_MEM32:
- printk("MMIO 0x%lx", port->mapbase);
+ snprintf(address, sizeof(address),
+ "MMIO 0x%lx", port->mapbase);
+ break;
+ default:
+ strlcpy(address, "*unknown*", sizeof(address));
break;
}
- printk(" (irq = %d) is a %s\n", port->irq, uart_type(port));
+
+ printk(KERN_INFO "%s%d at %s (irq = %d) is a %s\n",
+ drv->dev_name, port->line, address, port->irq, uart_type(port));
}
static void
}
EXPORT_SYMBOL(uart_match_port);
-/*
- * Try to find an unused uart_state slot for a port.
- */
-static struct uart_state *
-uart_find_match_or_unused(struct uart_driver *drv, struct uart_port *port)
-{
- int i;
-
- /*
- * First, find a port entry which matches. Note: if we do
- * find a matching entry, and it has a non-zero use count,
- * then we can't register the port.
- */
- for (i = 0; i < drv->nr; i++)
- if (uart_match_port(drv->state[i].port, port))
- return &drv->state[i];
-
- /*
- * We didn't find a matching entry, so look for the first
- * free entry. We look for one which hasn't been previously
- * used (indicated by zero iobase).
- */
- for (i = 0; i < drv->nr; i++)
- if (drv->state[i].port->type == PORT_UNKNOWN &&
- drv->state[i].port->iobase == 0 &&
- drv->state[i].count == 0)
- return &drv->state[i];
-
- /*
- * That also failed. Last resort is to find any currently
- * entry which doesn't have a real port associated with it.
- */
- for (i = 0; i < drv->nr; i++)
- if (drv->state[i].port->type == PORT_UNKNOWN &&
- drv->state[i].count == 0)
- return &drv->state[i];
-
- return NULL;
-}
-
-/**
- * uart_register_port: register uart settings with a port
- * @drv: pointer to the uart low level driver structure for this port
- * @port: uart port structure describing the port
- *
- * Register UART settings with the specified low level driver. Detect
- * the type of the port if UPF_BOOT_AUTOCONF is set, and detect the
- * IRQ if UPF_AUTO_IRQ is set.
- *
- * We try to pick the same port for the same IO base address, so that
- * when a modem is plugged in, unplugged and plugged back in, it gets
- * allocated the same port.
- *
- * Returns negative error, or positive line number.
- */
-int uart_register_port(struct uart_driver *drv, struct uart_port *port)
-{
- struct uart_state *state;
- int ret;
-
- down(&port_sem);
-
- state = uart_find_match_or_unused(drv, port);
-
- if (state) {
- /*
- * Ok, we've found a line that we can use.
- *
- * If we find a port that matches this one, and it appears
- * to be in-use (even if it doesn't have a type) we shouldn't
- * alter it underneath itself - the port may be open and
- * trying to do useful work.
- */
- if (uart_users(state) != 0) {
- ret = -EBUSY;
- goto out;
- }
-
- /*
- * If the port is already initialised, don't touch it.
- */
- if (state->port->type == PORT_UNKNOWN) {
- state->port->iobase = port->iobase;
- state->port->membase = port->membase;
- state->port->irq = port->irq;
- state->port->uartclk = port->uartclk;
- state->port->fifosize = port->fifosize;
- state->port->regshift = port->regshift;
- state->port->iotype = port->iotype;
- state->port->flags = port->flags;
- state->port->line = state - drv->state;
- state->port->mapbase = port->mapbase;
-
- uart_configure_port(drv, state, state->port);
- }
-
- ret = state->port->line;
- } else
- ret = -ENOSPC;
- out:
- up(&port_sem);
- return ret;
-}
-
-/**
- * uart_unregister_port - de-allocate a port
- * @drv: pointer to the uart low level driver structure for this port
- * @line: line index previously returned from uart_register_port()
- *
- * Hang up the specified line associated with the low level driver,
- * and mark the port as unused.
- */
-void uart_unregister_port(struct uart_driver *drv, int line)
-{
- struct uart_state *state;
-
- if (line < 0 || line >= drv->nr) {
- printk(KERN_ERR "Attempt to unregister ");
- printk("%s%d", drv->dev_name, line);
- printk("\n");
- return;
- }
-
- state = drv->state + line;
-
- down(&port_sem);
- uart_unconfigure_port(drv, state);
- up(&port_sem);
-}
-
EXPORT_SYMBOL(uart_write_wakeup);
EXPORT_SYMBOL(uart_register_driver);
EXPORT_SYMBOL(uart_unregister_driver);
EXPORT_SYMBOL(uart_suspend_port);
EXPORT_SYMBOL(uart_resume_port);
-EXPORT_SYMBOL(uart_register_port);
-EXPORT_SYMBOL(uart_unregister_port);
EXPORT_SYMBOL(uart_add_one_port);
EXPORT_SYMBOL(uart_remove_one_port);
projects / deliverable / linux.git / blobdiff