1 files changed, 5 insertions, 1 deletions

diff --git a/include/linux/serial_core.h b/include/linux/serial_core.h
index e3710d7e260a..ec351005bf9d 100644
--- a/include/linux/serial_core.h
+++ b/include/linux/serial_core.h
@@ -67,6 +67,9 @@
 /* Parisc type numbers. */
 #define PORT_MUX        48
 
+/* Atmel AT91RM9200 SoC */
+#define PORT_AT91RM9200 49
+
 /* Macintosh Zilog type numbers */
 #define PORT_MAC_ZILOG  50      /* m68k : not yet implemented */
 #define PORT_PMAC_ZILOG 51
@@ -133,6 +136,7 @@
 #include <linux/spinlock.h>
 #include <linux/sched.h>
 #include <linux/tty.h>
+#include <linux/mutex.h>
 
 struct uart_port;
 struct uart_info;
@@ -281,7 +285,7 @@ struct uart_state {
         struct uart_info        *info;
         struct uart_port        *port;
 
-        struct semaphore        sem;
+        struct mutex            mutex;
 };
 
 #define UART_XMIT_SIZE  PAGE_SIZE