summaryrefslogtreecommitdiff
path: root/include/linux/rtc.h
diff options
context:
space:
mode:
authorUwe Kleine-König <u.kleine-koenig@pengutronix.de>2010-03-11 02:20:35 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2010-03-13 02:52:28 +0300
commitd0ab4a4d5094e5d17b103dc5073529a04f00a469 (patch)
treec7f95b41b5802e6204aa2a26f9168668c1a85a25 /include/linux/rtc.h
parent019b4d123aa7b9fc135b532e021cfde85db7665d (diff)
downloadlinux-d0ab4a4d5094e5d17b103dc5073529a04f00a469.tar.xz
rtc/hctosys: only claim the RTC provided the system time if it did
Without this patch /sys/class/rtc/$CONFIG_RTC_HCTOSYS_DEVICE/hctosys contains a 1 (meaning "This rtc was used to initialize the system clock") even if reading the time at bootup failed. Moreover change error handling in rtc_hctosys() to use goto and so reduce the indention level. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Cc: Paul Gortmaker <p_gortmaker@yahoo.com> Acked-by: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/linux/rtc.h')
-rw-r--r--include/linux/rtc.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/include/linux/rtc.h b/include/linux/rtc.h
index 60f88a7fb13d..14dbc83ded20 100644
--- a/include/linux/rtc.h
+++ b/include/linux/rtc.h
@@ -238,6 +238,12 @@ static inline bool is_leap_year(unsigned int year)
return (!(year % 4) && (year % 100)) || !(year % 400);
}
+#ifdef CONFIG_RTC_HCTOSYS
+extern int rtc_hctosys_ret;
+#else
+#define rtc_hctosys_ret -ENODEV
+#endif
+
#endif /* __KERNEL__ */
#endif /* _LINUX_RTC_H_ */