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authorUwe Kleine-König <u.kleine-koenig@pengutronix.de>2010-03-10 15:20:35 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2010-03-12 15:52:28 -0800
commitd0ab4a4d5094e5d17b103dc5073529a04f00a469 (patch)
treec7f95b41b5802e6204aa2a26f9168668c1a85a25 /drivers/rtc/rtc-sysfs.c
parent019b4d123aa7b9fc135b532e021cfde85db7665d (diff)
downloadlinux-d0ab4a4d5094e5d17b103dc5073529a04f00a469.tar.bz2
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 'drivers/rtc/rtc-sysfs.c')
-rw-r--r--drivers/rtc/rtc-sysfs.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/rtc/rtc-sysfs.c b/drivers/rtc/rtc-sysfs.c
index 7dd23a6fc825..380083ca572f 100644
--- a/drivers/rtc/rtc-sysfs.c
+++ b/drivers/rtc/rtc-sysfs.c
@@ -107,8 +107,9 @@ rtc_sysfs_show_hctosys(struct device *dev, struct device_attribute *attr,
char *buf)
{
#ifdef CONFIG_RTC_HCTOSYS_DEVICE
- if (strcmp(dev_name(&to_rtc_device(dev)->dev),
- CONFIG_RTC_HCTOSYS_DEVICE) == 0)
+ if (rtc_hctosys_ret == 0 &&
+ strcmp(dev_name(&to_rtc_device(dev)->dev),
+ CONFIG_RTC_HCTOSYS_DEVICE) == 0)
return sprintf(buf, "1\n");
else
#endif