#define NEW_WRITE_LOCKING 1
#if NEW_WRITE_LOCKING
#define DECL /* Nothing */
-#define LOCKIT down (& port->port_write_sem);
-#define RELEASEIT up (&port->port_write_sem);
+#define LOCKIT mutex_lock(& port->port_write_mutex);
+#define RELEASEIT mutex_unlock(&port->port_write_mutex);
#else
#define DECL unsigned long flags;
#define LOCKIT save_flags (flags);cli ()
/* get exclusive "write" access to this port (problem 3) */
/* This is not a spinlock because we can have a disk access (page
fault) in copy_from_user */
- down (& port->port_write_sem);
+ mutex_lock(& port->port_write_mutex);
while (1) {
c = count;
/* This is safe because we "OWN" the "head". Noone else can
- change the "head": we own the port_write_sem. */
+ change the "head": we own the port_write_mutex. */
/* Don't overrun the end of the buffer */
t = SERIAL_XMIT_SIZE - port->xmit_head;
if (t < c) c = t;
count -= c;
total += c;
}
- up (& port->port_write_sem);
+ mutex_unlock(& port->port_write_mutex);
gs_dprintk (GS_DEBUG_WRITE, "write: interrupts are %s\n",
(port->flags & GS_TX_INTEN)?"enabled": "disabled");
c = count;
/* This is safe because we "OWN" the "head". Noone else can
- change the "head": we own the port_write_sem. */
+ change the "head": we own the port_write_mutex. */
/* Don't overrun the end of the buffer */
t = SERIAL_XMIT_SIZE - port->xmit_head;
if (t < c) c = t;
spin_lock_irqsave (&port->driver_lock, flags);
if (port->tty)
clear_bit(TTY_IO_ERROR, &port->tty->flags);
- init_MUTEX(&port->port_write_sem);
+ mutex_init(&port->port_write_mutex);
port->xmit_cnt = port->xmit_head = port->xmit_tail = 0;
spin_unlock_irqrestore(&port->driver_lock, flags);
gs_set_termios(port->tty, NULL);