5 files changed, 14 insertions, 12 deletions

diff --git a/drivers/char/generic_serial.c b/drivers/char/generic_serial.c
index e38a5f0e07bb..5e59c0b42731 100644
--- a/drivers/char/generic_serial.c
+++ b/drivers/char/generic_serial.c
@@ -48,8 +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 ()
@@ -124,14 +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;
@@ -153,7 +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"); 
@@ -214,7 +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;
@@ -888,7 +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);
diff --git a/drivers/char/ser_a2232.c b/drivers/char/ser_a2232.c
index fee68cc895f8..510bd3e0e88b 100644
--- a/drivers/char/ser_a2232.c
+++ b/drivers/char/ser_a2232.c
@@ -97,7 +97,7 @@
 #include <asm/amigahw.h>
 #include <linux/zorro.h>
 #include <asm/irq.h>
-#include <asm/semaphore.h>
+#include <linux/mutex.h>
 
 #include <linux/delay.h>
 
@@ -654,7 +654,7 @@ static void a2232_init_portstructs(void)
                 port->gs.closing_wait = 30 * HZ;
                 port->gs.rd = &a2232_real_driver;
 #ifdef NEW_WRITE_LOCKING
-                init_MUTEX(&(port->gs.port_write_sem));
+                init_MUTEX(&(port->gs.port_write_mutex));
 #endif
                 init_waitqueue_head(&port->gs.open_wait);
                 init_waitqueue_head(&port->gs.close_wait);
diff --git a/drivers/char/sx.c b/drivers/char/sx.c
index a6b4f02bdceb..3b4747230270 100644
--- a/drivers/char/sx.c
+++ b/drivers/char/sx.c
@@ -2318,7 +2318,7 @@ static int sx_init_portstructs (int nboards, int nports)
                         port->board = board;
                         port->gs.rd = &sx_real_driver;
 #ifdef NEW_WRITE_LOCKING
-                        port->gs.port_write_sem = MUTEX;
+                        port->gs.port_write_mutex = MUTEX;
 #endif
                         port->gs.driver_lock = SPIN_LOCK_UNLOCKED;
                         /*
diff --git a/drivers/char/vme_scc.c b/drivers/char/vme_scc.c
index d9325281e482..fd00822ac145 100644
--- a/drivers/char/vme_scc.c
+++ b/drivers/char/vme_scc.c
@@ -184,7 +184,7 @@ static void scc_init_portstructs(void)
                 port->gs.closing_wait = 30 * HZ;
                 port->gs.rd = &scc_real_driver;
 #ifdef NEW_WRITE_LOCKING
-                port->gs.port_write_sem = MUTEX;
+                port->gs.port_write_mutex = MUTEX;
 #endif
                 init_waitqueue_head(&port->gs.open_wait);
                 init_waitqueue_head(&port->gs.close_wait);
diff --git a/include/linux/generic_serial.h b/include/linux/generic_serial.h
index 0abe9d9a0069..652611a4bdcd 100644
--- a/include/linux/generic_serial.h
+++ b/include/linux/generic_serial.h
@@ -12,6 +12,8 @@
 #ifndef GENERIC_SERIAL_H
 #define GENERIC_SERIAL_H
 
+#include <linux/mutex.h>
+
 struct real_driver {
   void                    (*disable_tx_interrupts) (void *);
   void                    (*enable_tx_interrupts) (void *);
@@ -34,7 +36,7 @@ struct gs_port {
   int                     xmit_head;
   int                     xmit_tail;
   int                     xmit_cnt;
-  struct semaphore        port_write_sem;
+  struct mutex            port_write_mutex;
   int                     flags;
   wait_queue_head_t       open_wait;
   wait_queue_head_t       close_wait;