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authorBaolin Wang <baolin.wang@linaro.org>2017-11-09 15:09:20 +0800
committerAlexandre Belloni <alexandre.belloni@free-electrons.com>2017-11-10 09:57:38 +0100
commit9a06da2ecc92a81e969bd8c3768f63b63cb02e80 (patch)
tree4ba5522beded6b402ec7dbf338760ff82d57a040 /drivers/rtc
parent573e2bf05421d0dc69dc3c604f286b3473d2f2cd (diff)
rtc: sysfs: Use time64_t variables to set time/alarm
Use time64_t variables and related APIs for sysfs interfaces to support setting time or alarm after the year 2038 on 32-bit system. Signed-off-by: Baolin Wang <baolin.wang@linaro.org> Reviewed-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Diffstat (limited to 'drivers/rtc')
-rw-r--r--drivers/rtc/rtc-sysfs.c25
1 files changed, 13 insertions, 12 deletions
diff --git a/drivers/rtc/rtc-sysfs.c b/drivers/rtc/rtc-sysfs.c
index e364550eb9a7..92ff2edb86a6 100644
--- a/drivers/rtc/rtc-sysfs.c
+++ b/drivers/rtc/rtc-sysfs.c
@@ -72,9 +72,10 @@ since_epoch_show(struct device *dev, struct device_attribute *attr, char *buf)
retval = rtc_read_time(to_rtc_device(dev), &tm);
if (retval == 0) {
- unsigned long time;
- rtc_tm_to_time(&tm, &time);
- retval = sprintf(buf, "%lu\n", time);
+ time64_t time;
+
+ time = rtc_tm_to_time64(&tm);
+ retval = sprintf(buf, "%lld\n", time);
}
return retval;
@@ -132,7 +133,7 @@ static ssize_t
wakealarm_show(struct device *dev, struct device_attribute *attr, char *buf)
{
ssize_t retval;
- unsigned long alarm;
+ time64_t alarm;
struct rtc_wkalrm alm;
/* Don't show disabled alarms. For uniformity, RTC alarms are
@@ -145,8 +146,8 @@ wakealarm_show(struct device *dev, struct device_attribute *attr, char *buf)
*/
retval = rtc_read_alarm(to_rtc_device(dev), &alm);
if (retval == 0 && alm.enabled) {
- rtc_tm_to_time(&alm.time, &alarm);
- retval = sprintf(buf, "%lu\n", alarm);
+ alarm = rtc_tm_to_time64(&alm.time);
+ retval = sprintf(buf, "%lld\n", alarm);
}
return retval;
@@ -157,8 +158,8 @@ wakealarm_store(struct device *dev, struct device_attribute *attr,
const char *buf, size_t n)
{
ssize_t retval;
- unsigned long now, alarm;
- unsigned long push = 0;
+ time64_t now, alarm;
+ time64_t push = 0;
struct rtc_wkalrm alm;
struct rtc_device *rtc = to_rtc_device(dev);
const char *buf_ptr;
@@ -170,7 +171,7 @@ wakealarm_store(struct device *dev, struct device_attribute *attr,
retval = rtc_read_time(rtc, &alm.time);
if (retval < 0)
return retval;
- rtc_tm_to_time(&alm.time, &now);
+ now = rtc_tm_to_time64(&alm.time);
buf_ptr = buf;
if (*buf_ptr == '+') {
@@ -181,7 +182,7 @@ wakealarm_store(struct device *dev, struct device_attribute *attr,
} else
adjust = 1;
}
- retval = kstrtoul(buf_ptr, 0, &alarm);
+ retval = kstrtos64(buf_ptr, 0, &alarm);
if (retval)
return retval;
if (adjust) {
@@ -197,7 +198,7 @@ wakealarm_store(struct device *dev, struct device_attribute *attr,
return retval;
if (alm.enabled) {
if (push) {
- rtc_tm_to_time(&alm.time, &push);
+ push = rtc_tm_to_time64(&alm.time);
alarm += push;
} else
return -EBUSY;
@@ -212,7 +213,7 @@ wakealarm_store(struct device *dev, struct device_attribute *attr,
*/
alarm = now + 300;
}
- rtc_time_to_tm(alarm, &alm.time);
+ rtc_time64_to_tm(alarm, &alm.time);
retval = rtc_set_alarm(rtc, &alm);
return (retval < 0) ? retval : n;

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