3 files changed, 25 insertions, 5 deletions

diff --git a/include/linux/pps_kernel.h b/include/linux/pps_kernel.h
index 65194fe498b..32aa6763ca1 100644
--- a/include/linux/pps_kernel.h
+++ b/include/linux/pps_kernel.h
@@ -43,6 +43,10 @@ struct pps_source_info {
         struct device *dev;
 };
 
+struct pps_event_time {
+        struct timespec ts_real;
+};
+
 /* The main struct */
 struct pps_device {
         struct pps_source_info info;            /* PSS source info */
@@ -88,6 +92,20 @@ extern int pps_register_source(struct pps_source_info *info,
 extern void pps_unregister_source(int source);
 extern int pps_register_cdev(struct pps_device *pps);
 extern void pps_unregister_cdev(struct pps_device *pps);
-extern void pps_event(int source, struct pps_ktime *ts, int event, void *data);
+extern void pps_event(int source, struct pps_event_time *ts, int event,
+                void *data);
+
+static inline void timespec_to_pps_ktime(struct pps_ktime *kt,
+                struct timespec ts)
+{
+        kt->sec = ts.tv_sec;
+        kt->nsec = ts.tv_nsec;
+}
+
+static inline void pps_get_ts(struct pps_event_time *ts)
+{
+        getnstimeofday(&ts->ts_real);
+}
 
 #endif /* LINUX_PPS_KERNEL_H */
+
diff --git a/include/linux/serial_core.h b/include/linux/serial_core.h
index a23fa29d4eb..758c5b0c6fd 100644
--- a/include/linux/serial_core.h
+++ b/include/linux/serial_core.h
@@ -212,6 +212,7 @@
 #include <linux/tty.h>
 #include <linux/mutex.h>
 #include <linux/sysrq.h>
+#include <linux/pps_kernel.h>
 
 struct uart_port;
 struct serial_struct;
@@ -528,10 +529,10 @@ uart_handle_dcd_change(struct uart_port *uport, unsigned int status)
         struct uart_state *state = uport->state;
         struct tty_port *port = &state->port;
         struct tty_ldisc *ld = tty_ldisc_ref(port->tty);
-        struct timespec ts;
+        struct pps_event_time ts;
 
         if (ld && ld->ops->dcd_change)
-                getnstimeofday(&ts);
+                pps_get_ts(&ts);
 
         uport->icount.dcd++;
 #ifdef CONFIG_HARD_PPS
diff --git a/include/linux/tty_ldisc.h b/include/linux/tty_ldisc.h
index 526d66f066a..763e061e19f 100644
--- a/include/linux/tty_ldisc.h
+++ b/include/linux/tty_ldisc.h
@@ -101,7 +101,7 @@
  *      any pending driver I/O is completed.
  *
  * void (*dcd_change)(struct tty_struct *tty, unsigned int status,
- *                      struct timespec *ts)
+ *                      struct pps_event_time *ts)
  *
  *      Tells the discipline that the DCD pin has changed its status and
  *      the relative timestamp. Pointer ts can be NULL.
@@ -109,6 +109,7 @@
 
 #include <linux/fs.h>
 #include <linux/wait.h>
+#include <linux/pps_kernel.h>
 
 struct tty_ldisc_ops {
         int     magic;
@@ -143,7 +144,7 @@ struct tty_ldisc_ops {
                                char *fp, int count);
         void    (*write_wakeup)(struct tty_struct *);
         void    (*dcd_change)(struct tty_struct *, unsigned int,
-                                struct timespec *);
+                                struct pps_event_time *);
 
         struct  module *owner;