From 023f333a99cee9b5cd3268ff87298eb01a31f78e Mon Sep 17 00:00:00 2001 From: Jason Gunthorpe Date: Mon, 17 Dec 2012 14:30:53 -0700 Subject: NTP: Add a CONFIG_RTC_SYSTOHC configuration The purpose of this option is to allow ARM/etc systems that rely on the class RTC subsystem to have the same kind of automatic NTP based synchronization that we have on PC platforms. Today ARM does not implement update_persistent_clock and makes extensive use of the class RTC system. When enabled CONFIG_RTC_SYSTOHC will provide a generic rtc_update_persistent_clock that stores the current time in the RTC and is intended complement the existing CONFIG_RTC_HCTOSYS option that loads the RTC at boot. Like with RTC_HCTOSYS the platform's update_persistent_clock is used first, if it works. Platforms with mixed class RTC and non-RTC drivers need to return ENODEV when class RTC should be used. Such an update for PPC is included in this patch. Long term, implementations of update_persistent_clock should migrate to proper class RTC drivers and use CONFIG_RTC_SYSTOHC instead. Tested on ARM kirkwood and PPC405 Signed-off-by: Jason Gunthorpe Signed-off-by: John Stultz --- include/linux/rtc.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux/rtc.h') diff --git a/include/linux/rtc.h b/include/linux/rtc.h index 9531845c419f..11d05f9fe8b6 100644 --- a/include/linux/rtc.h +++ b/include/linux/rtc.h @@ -138,6 +138,7 @@ extern void rtc_device_unregister(struct rtc_device *rtc); extern int rtc_read_time(struct rtc_device *rtc, struct rtc_time *tm); extern int rtc_set_time(struct rtc_device *rtc, struct rtc_time *tm); extern int rtc_set_mmss(struct rtc_device *rtc, unsigned long secs); +extern int rtc_set_ntp_time(struct timespec now); int __rtc_read_alarm(struct rtc_device *rtc, struct rtc_wkalrm *alarm); extern int rtc_read_alarm(struct rtc_device *rtc, struct rtc_wkalrm *alrm); -- cgit v1.2.3 From 9f3b795a626ee79574595e06d1437fe0c7d51d29 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Micha=C5=82=20Miros=C5=82aw?= Date: Fri, 1 Feb 2013 20:40:17 +0100 Subject: driver-core: constify data for class_find_device() MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit All in-kernel users of class_find_device() don't really need mutable data for match callback. In two places (kernel/power/suspend_test.c, drivers/scsi/osd/osd_uld.c) this patch changes match callbacks to use const search data. The const is propagated to rtc_class_open() and power_supply_get_by_name() parameters. Note that there's a dev reference leak in suspend_test.c that's not touched in this patch. Signed-off-by: Michał Mirosław Acked-by: Grant Likely Signed-off-by: Greg Kroah-Hartman --- include/linux/rtc.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux/rtc.h') diff --git a/include/linux/rtc.h b/include/linux/rtc.h index 9531845c419f..445fe6e7c629 100644 --- a/include/linux/rtc.h +++ b/include/linux/rtc.h @@ -148,7 +148,7 @@ extern int rtc_initialize_alarm(struct rtc_device *rtc, extern void rtc_update_irq(struct rtc_device *rtc, unsigned long num, unsigned long events); -extern struct rtc_device *rtc_class_open(char *name); +extern struct rtc_device *rtc_class_open(const char *name); extern void rtc_class_close(struct rtc_device *rtc); extern int rtc_irq_register(struct rtc_device *rtc, -- cgit v1.2.3