1 files changed, 5 insertions, 2 deletions

diff --git a/include/linux/clocksource.h b/include/linux/clocksource.h
index 7279b94c01da..2f39a4911668 100644
--- a/include/linux/clocksource.h
+++ b/include/linux/clocksource.h
@@ -21,6 +21,7 @@
 /* clocksource cycle base type */
 typedef u64 cycle_t;
 struct clocksource;
+struct module;
 
 #ifdef CONFIG_ARCH_CLOCKSOURCE_DATA
 #include <asm/clocksource.h>
@@ -162,6 +163,7 @@ extern u64 timecounter_cyc2time(struct timecounter *tc,
  * @suspend:            suspend function for the clocksource, if necessary
  * @resume:             resume function for the clocksource, if necessary
  * @cycle_last:         most recent cycle counter value seen by ::read()
+ * @owner:              module reference, must be set by clocksource in modules
  */
 struct clocksource {
         /*
@@ -195,6 +197,7 @@ struct clocksource {
         cycle_t cs_last;
         cycle_t wd_last;
 #endif
+        struct module *owner;
 } ____cacheline_aligned;
 
 /*
@@ -279,7 +282,7 @@ static inline s64 clocksource_cyc2ns(cycle_t cycles, u32 mult, u32 shift)
 
 
 extern int clocksource_register(struct clocksource*);
-extern void clocksource_unregister(struct clocksource*);
+extern int clocksource_unregister(struct clocksource*);
 extern void clocksource_touch_watchdog(void);
 extern struct clocksource* clocksource_get_next(void);
 extern void clocksource_change_rating(struct clocksource *cs, int rating);
@@ -321,7 +324,7 @@ static inline void __clocksource_updatefreq_khz(struct clocksource *cs, u32 khz)
 }
 
 
-extern void timekeeping_notify(struct clocksource *clock);
+extern int timekeeping_notify(struct clocksource *clock);
 
 extern cycle_t clocksource_mmio_readl_up(struct clocksource *);
 extern cycle_t clocksource_mmio_readl_down(struct clocksource *);