#include <asm/uaccess.h>
#include <linux/smp_lock.h>
#include <linux/delay.h>
+#include <linux/mutex.h>
#include <net/irda/irda.h>
#include <net/irda/irda_device.h>
sirdev_receive(dev, cp, count);
}
-/*
- * Function irtty_receive_room (tty)
- *
- * Used by the TTY to find out how much data we can receive at a time
- *
-*/
-static int irtty_receive_room(struct tty_struct *tty)
-{
- struct sirtty_cb *priv = tty->disc_data;
-
- IRDA_ASSERT(priv != NULL, return 0;);
- IRDA_ASSERT(priv->magic == IRTTY_MAGIC, return 0;);
-
- return 65536; /* We can handle an infinite amount of data. :-) */
-}
-
/*
* Function irtty_write_wakeup (tty)
*
/*****************************************************************/
/* serialize ldisc open/close with sir_dev */
-static DECLARE_MUTEX(irtty_sem);
+static DEFINE_MUTEX(irtty_mutex);
/* notifier from sir_dev when irda% device gets opened (ifup) */
struct tty_struct *tty;
/* serialize with ldisc open/close */
- down(&irtty_sem);
+ mutex_lock(&irtty_mutex);
priv = dev->priv;
if (unlikely(!priv || priv->magic!=IRTTY_MAGIC)) {
- up(&irtty_sem);
+ mutex_unlock(&irtty_mutex);
return -ESTALE;
}
/* Make sure we can receive more data */
irtty_stop_receiver(tty, FALSE);
- up(&irtty_sem);
+ mutex_unlock(&irtty_mutex);
return 0;
}
struct tty_struct *tty;
/* serialize with ldisc open/close */
- down(&irtty_sem);
+ mutex_lock(&irtty_mutex);
priv = dev->priv;
if (unlikely(!priv || priv->magic!=IRTTY_MAGIC)) {
- up(&irtty_sem);
+ mutex_unlock(&irtty_mutex);
return -ESTALE;
}
if (tty->driver->stop)
tty->driver->stop(tty);
- up(&irtty_sem);
+ mutex_unlock(&irtty_mutex);
return 0;
}
priv->dev = dev;
/* serialize with start_dev - in case we were racing with ifup */
- down(&irtty_sem);
+ mutex_lock(&irtty_mutex);
dev->priv = priv;
tty->disc_data = priv;
+ tty->receive_room = 65536;
- up(&irtty_sem);
+ mutex_unlock(&irtty_mutex);
IRDA_DEBUG(0, "%s - %s: irda line discipline opened\n", __FUNCTION__, tty->name);
.ioctl = irtty_ioctl,
.poll = NULL,
.receive_buf = irtty_receive_buf,
- .receive_room = irtty_receive_room,
.write_wakeup = irtty_write_wakeup,
.owner = THIS_MODULE,
};