Fedora kernel-2.6.17-1.2142_FC4 patched with stable patch-2.6.17.4-vs2.0.2-rc26.diff

[linux-2.6.git] / drivers / char / generic_serial.c

diff --git a/drivers/char/generic_serial.c b/drivers/char/generic_serial.c
index 204a730..5e59c0b 100644 (file)
--- a/drivers/char/generic_serial.c
+++ b/drivers/char/generic_serial.c
@@ -34,7 +34,6 @@
 #define DEBUG 
 
 static char *                  tmp_buf; 
-static DECLARE_MUTEX(tmp_buf_sem);
 
 static int gs_debug;
 
@@ -49,8 +48,8 @@ static int gs_debug;
 #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 ()
@@ -125,14 +124,14 @@ int gs_write(struct tty_struct * tty,
        /* 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;
@@ -154,7 +153,7 @@ int gs_write(struct tty_struct * tty,
                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"); 
@@ -215,7 +214,7 @@ int gs_write(struct tty_struct * tty,
                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;
@@ -889,7 +888,7 @@ int gs_init_port(struct gs_port *port)
        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);