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-rw-r--r--drivers/rtc/interface.c6
-rw-r--r--drivers/rtc/rtc-m41t80.c9
-rw-r--r--include/linux/clocksource.h11
-rw-r--r--kernel/time/clocksource.c12
4 files changed, 32 insertions, 6 deletions
diff --git a/drivers/rtc/interface.c b/drivers/rtc/interface.c
index fa4d9f324189..3bcc7cfcaba7 100644
--- a/drivers/rtc/interface.c
+++ b/drivers/rtc/interface.c
@@ -73,6 +73,8 @@ int rtc_set_time(struct rtc_device *rtc, struct rtc_time *tm)
73 err = -EINVAL; 73 err = -EINVAL;
74 74
75 mutex_unlock(&rtc->ops_lock); 75 mutex_unlock(&rtc->ops_lock);
76 /* A timer might have just expired */
77 schedule_work(&rtc->irqwork);
76 return err; 78 return err;
77} 79}
78EXPORT_SYMBOL_GPL(rtc_set_time); 80EXPORT_SYMBOL_GPL(rtc_set_time);
@@ -112,6 +114,8 @@ int rtc_set_mmss(struct rtc_device *rtc, unsigned long secs)
112 err = -EINVAL; 114 err = -EINVAL;
113 115
114 mutex_unlock(&rtc->ops_lock); 116 mutex_unlock(&rtc->ops_lock);
117 /* A timer might have just expired */
118 schedule_work(&rtc->irqwork);
115 119
116 return err; 120 return err;
117} 121}
@@ -403,6 +407,8 @@ int rtc_initialize_alarm(struct rtc_device *rtc, struct rtc_wkalrm *alarm)
403 timerqueue_add(&rtc->timerqueue, &rtc->aie_timer.node); 407 timerqueue_add(&rtc->timerqueue, &rtc->aie_timer.node);
404 } 408 }
405 mutex_unlock(&rtc->ops_lock); 409 mutex_unlock(&rtc->ops_lock);
410 /* maybe that was in the past.*/
411 schedule_work(&rtc->irqwork);
406 return err; 412 return err;
407} 413}
408EXPORT_SYMBOL_GPL(rtc_initialize_alarm); 414EXPORT_SYMBOL_GPL(rtc_initialize_alarm);
diff --git a/drivers/rtc/rtc-m41t80.c b/drivers/rtc/rtc-m41t80.c
index eda128fc1d38..64aedd8cc095 100644
--- a/drivers/rtc/rtc-m41t80.c
+++ b/drivers/rtc/rtc-m41t80.c
@@ -357,10 +357,19 @@ static int m41t80_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *t)
357static struct rtc_class_ops m41t80_rtc_ops = { 357static struct rtc_class_ops m41t80_rtc_ops = {
358 .read_time = m41t80_rtc_read_time, 358 .read_time = m41t80_rtc_read_time,
359 .set_time = m41t80_rtc_set_time, 359 .set_time = m41t80_rtc_set_time,
360 /*
361 * XXX - m41t80 alarm functionality is reported broken.
362 * until it is fixed, don't register alarm functions.
363 *
360 .read_alarm = m41t80_rtc_read_alarm, 364 .read_alarm = m41t80_rtc_read_alarm,
361 .set_alarm = m41t80_rtc_set_alarm, 365 .set_alarm = m41t80_rtc_set_alarm,
366 */
362 .proc = m41t80_rtc_proc, 367 .proc = m41t80_rtc_proc,
368 /*
369 * See above comment on broken alarm
370 *
363 .alarm_irq_enable = m41t80_rtc_alarm_irq_enable, 371 .alarm_irq_enable = m41t80_rtc_alarm_irq_enable,
372 */
364}; 373};
365 374
366#if defined(CONFIG_RTC_INTF_SYSFS) || defined(CONFIG_RTC_INTF_SYSFS_MODULE) 375#if defined(CONFIG_RTC_INTF_SYSFS) || defined(CONFIG_RTC_INTF_SYSFS_MODULE)
diff --git a/include/linux/clocksource.h b/include/linux/clocksource.h
index c86c940d1de3..081147da0564 100644
--- a/include/linux/clocksource.h
+++ b/include/linux/clocksource.h
@@ -71,7 +71,7 @@ struct timecounter {
71 71
72/** 72/**
73 * cyclecounter_cyc2ns - converts cycle counter cycles to nanoseconds 73 * cyclecounter_cyc2ns - converts cycle counter cycles to nanoseconds
74 * @tc: Pointer to cycle counter. 74 * @cc: Pointer to cycle counter.
75 * @cycles: Cycles 75 * @cycles: Cycles
76 * 76 *
77 * XXX - This could use some mult_lxl_ll() asm optimization. Same code 77 * XXX - This could use some mult_lxl_ll() asm optimization. Same code
@@ -114,7 +114,7 @@ extern u64 timecounter_read(struct timecounter *tc);
114 * time base as values returned by 114 * time base as values returned by
115 * timecounter_read() 115 * timecounter_read()
116 * @tc: Pointer to time counter. 116 * @tc: Pointer to time counter.
117 * @cycle: a value returned by tc->cc->read() 117 * @cycle_tstamp: a value returned by tc->cc->read()
118 * 118 *
119 * Cycle counts that are converted correctly as long as they 119 * Cycle counts that are converted correctly as long as they
120 * fall into the interval [-1/2 max cycle count, +1/2 max cycle count], 120 * fall into the interval [-1/2 max cycle count, +1/2 max cycle count],
@@ -156,11 +156,12 @@ extern u64 timecounter_cyc2time(struct timecounter *tc,
156 * @mult: cycle to nanosecond multiplier 156 * @mult: cycle to nanosecond multiplier
157 * @shift: cycle to nanosecond divisor (power of two) 157 * @shift: cycle to nanosecond divisor (power of two)
158 * @max_idle_ns: max idle time permitted by the clocksource (nsecs) 158 * @max_idle_ns: max idle time permitted by the clocksource (nsecs)
159 * @maxadj maximum adjustment value to mult (~11%) 159 * @maxadj: maximum adjustment value to mult (~11%)
160 * @flags: flags describing special properties 160 * @flags: flags describing special properties
161 * @archdata: arch-specific data 161 * @archdata: arch-specific data
162 * @suspend: suspend function for the clocksource, if necessary 162 * @suspend: suspend function for the clocksource, if necessary
163 * @resume: resume function for the clocksource, if necessary 163 * @resume: resume function for the clocksource, if necessary
164 * @cycle_last: most recent cycle counter value seen by ::read()
164 */ 165 */
165struct clocksource { 166struct clocksource {
166 /* 167 /*
@@ -187,6 +188,7 @@ struct clocksource {
187 void (*suspend)(struct clocksource *cs); 188 void (*suspend)(struct clocksource *cs);
188 void (*resume)(struct clocksource *cs); 189 void (*resume)(struct clocksource *cs);
189 190
191 /* private: */
190#ifdef CONFIG_CLOCKSOURCE_WATCHDOG 192#ifdef CONFIG_CLOCKSOURCE_WATCHDOG
191 /* Watchdog related data, used by the framework */ 193 /* Watchdog related data, used by the framework */
192 struct list_head wd_list; 194 struct list_head wd_list;
@@ -261,6 +263,9 @@ static inline u32 clocksource_hz2mult(u32 hz, u32 shift_constant)
261 263
262/** 264/**
263 * clocksource_cyc2ns - converts clocksource cycles to nanoseconds 265 * clocksource_cyc2ns - converts clocksource cycles to nanoseconds
266 * @cycles: cycles
267 * @mult: cycle to nanosecond multiplier
268 * @shift: cycle to nanosecond divisor (power of two)
264 * 269 *
265 * Converts cycles to nanoseconds, using the given mult and shift. 270 * Converts cycles to nanoseconds, using the given mult and shift.
266 * 271 *
diff --git a/kernel/time/clocksource.c b/kernel/time/clocksource.c
index da2f760e780c..d3ad022136e5 100644
--- a/kernel/time/clocksource.c
+++ b/kernel/time/clocksource.c
@@ -647,7 +647,7 @@ static void clocksource_enqueue(struct clocksource *cs)
647 647
648/** 648/**
649 * __clocksource_updatefreq_scale - Used update clocksource with new freq 649 * __clocksource_updatefreq_scale - Used update clocksource with new freq
650 * @t: clocksource to be registered 650 * @cs: clocksource to be registered
651 * @scale: Scale factor multiplied against freq to get clocksource hz 651 * @scale: Scale factor multiplied against freq to get clocksource hz
652 * @freq: clocksource frequency (cycles per second) divided by scale 652 * @freq: clocksource frequency (cycles per second) divided by scale
653 * 653 *
@@ -699,7 +699,7 @@ EXPORT_SYMBOL_GPL(__clocksource_updatefreq_scale);
699 699
700/** 700/**
701 * __clocksource_register_scale - Used to install new clocksources 701 * __clocksource_register_scale - Used to install new clocksources
702 * @t: clocksource to be registered 702 * @cs: clocksource to be registered
703 * @scale: Scale factor multiplied against freq to get clocksource hz 703 * @scale: Scale factor multiplied against freq to get clocksource hz
704 * @freq: clocksource frequency (cycles per second) divided by scale 704 * @freq: clocksource frequency (cycles per second) divided by scale
705 * 705 *
@@ -727,7 +727,7 @@ EXPORT_SYMBOL_GPL(__clocksource_register_scale);
727 727
728/** 728/**
729 * clocksource_register - Used to install new clocksources 729 * clocksource_register - Used to install new clocksources
730 * @t: clocksource to be registered 730 * @cs: clocksource to be registered
731 * 731 *
732 * Returns -EBUSY if registration fails, zero otherwise. 732 * Returns -EBUSY if registration fails, zero otherwise.
733 */ 733 */
@@ -761,6 +761,8 @@ static void __clocksource_change_rating(struct clocksource *cs, int rating)
761 761
762/** 762/**
763 * clocksource_change_rating - Change the rating of a registered clocksource 763 * clocksource_change_rating - Change the rating of a registered clocksource
764 * @cs: clocksource to be changed
765 * @rating: new rating
764 */ 766 */
765void clocksource_change_rating(struct clocksource *cs, int rating) 767void clocksource_change_rating(struct clocksource *cs, int rating)
766{ 768{
@@ -772,6 +774,7 @@ EXPORT_SYMBOL(clocksource_change_rating);
772 774
773/** 775/**
774 * clocksource_unregister - remove a registered clocksource 776 * clocksource_unregister - remove a registered clocksource
777 * @cs: clocksource to be unregistered
775 */ 778 */
776void clocksource_unregister(struct clocksource *cs) 779void clocksource_unregister(struct clocksource *cs)
777{ 780{
@@ -787,6 +790,7 @@ EXPORT_SYMBOL(clocksource_unregister);
787/** 790/**
788 * sysfs_show_current_clocksources - sysfs interface for current clocksource 791 * sysfs_show_current_clocksources - sysfs interface for current clocksource
789 * @dev: unused 792 * @dev: unused
793 * @attr: unused
790 * @buf: char buffer to be filled with clocksource list 794 * @buf: char buffer to be filled with clocksource list
791 * 795 *
792 * Provides sysfs interface for listing current clocksource. 796 * Provides sysfs interface for listing current clocksource.
@@ -807,6 +811,7 @@ sysfs_show_current_clocksources(struct sys_device *dev,
807/** 811/**
808 * sysfs_override_clocksource - interface for manually overriding clocksource 812 * sysfs_override_clocksource - interface for manually overriding clocksource
809 * @dev: unused 813 * @dev: unused
814 * @attr: unused
810 * @buf: name of override clocksource 815 * @buf: name of override clocksource
811 * @count: length of buffer 816 * @count: length of buffer
812 * 817 *
@@ -842,6 +847,7 @@ static ssize_t sysfs_override_clocksource(struct sys_device *dev,
842/** 847/**
843 * sysfs_show_available_clocksources - sysfs interface for listing clocksource 848 * sysfs_show_available_clocksources - sysfs interface for listing clocksource
844 * @dev: unused 849 * @dev: unused
850 * @attr: unused
845 * @buf: char buffer to be filled with clocksource list 851 * @buf: char buffer to be filled with clocksource list
846 * 852 *
847 * Provides sysfs interface for listing registered clocksources 853 * Provides sysfs interface for listing registered clocksources