---

yaml
---
r: 187299
b: refs/heads/master
c: b3e63af
h: refs/heads/master
i:
  187297: b221a6e
  187295: 67c4e2e
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 697fb85fcf21b5229a3072440222d14b05ef2abe
+refs/heads/master: b3e63afe8a74c0134d05a551cc74facc3b3ec0d7

trunk/Documentation/serial/tty.txt

@@ -105,6 +105,10 @@ write_wakeup()	-	May be called at any point between open and close.
 			is permitted to call the driver write method from
 			this function. In such a situation defer it.
 
+dcd_change()	-	Report to the tty line the current DCD pin status
+			changes and the relative timestamp. The timestamp
+			can be NULL.
+
 
 Driver Access
 

trunk/include/linux/tty_ldisc.h

@@ -99,6 +99,12 @@
  *	cease I/O to the tty driver. Can sleep. The driver should
  *	seek to perform this action quickly but should wait until
  *	any pending driver I/O is completed.
+ *
+ * void (*dcd_change)(struct tty_struct *tty, unsigned int status,
+ * 			struct timespec *ts)
+ *
+ *	Tells the discipline that the DCD pin has changed its status and
+ *	the relative timestamp. Pointer ts can be NULL.
  */
 
 #include <linux/fs.h>
@@ -136,6 +142,8 @@ struct tty_ldisc_ops {
 	void	(*receive_buf)(struct tty_struct *, const unsigned char *cp,
 			       char *fp, int count);
 	void	(*write_wakeup)(struct tty_struct *);
+	void	(*dcd_change)(struct tty_struct *, unsigned int,
+				struct timespec *);
 
 	struct  module *owner;