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rtc: use LCL functions to read and step system clock

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This commit is contained in:
Miroslav Lichvar 2014-08-18 13:07:52 +02:00
parent 38ac081114
commit 716d73d982
1 changed files with 8 additions and 10 deletions
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18
rtc_linux.c
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@ -980,7 +980,7 @@ RTC_Linux_TimePreInit(void)
struct rtc_time rtc_raw, rtc_raw_retry;
struct tm rtc_tm;
time_t rtc_t;
double accumulated_error;
double accumulated_error, sys_offset;
struct timeval new_sys_time, old_sys_time;
coefs_file_name = CNF_GetRtcFile();
@ -1004,6 +1004,9 @@ RTC_Linux_TimePreInit(void)
}
} while (status >= 0 && rtc_raw.tm_sec != rtc_raw_retry.tm_sec);
/* Read system clock */
LCL_ReadCookedTime(&old_sys_time, NULL);
if (status >= 0) {
/* Convert to seconds since 1970 */
rtc_tm.tm_sec = rtc_raw.tm_sec;
@ -1034,18 +1037,13 @@ RTC_Linux_TimePreInit(void)
UTI_AddDoubleToTimeval(&new_sys_time, -accumulated_error, &new_sys_time);
/* Set system time only if the step is larger than 1 second */
if (!(gettimeofday(&old_sys_time, NULL) < 0) &&
(old_sys_time.tv_sec - new_sys_time.tv_sec > 1 ||
old_sys_time.tv_sec - new_sys_time.tv_sec < -1)) {
UTI_DiffTimevalsToDouble(&sys_offset, &old_sys_time, &new_sys_time);
/* Set system time only if the step is larger than 1 second */
if (fabs(sys_offset) >= 1.0) {
LOG(LOGS_INFO, LOGF_RtcLinux, "Set system time, error in RTC = %f",
accumulated_error);
/* Tough luck if this fails */
if (settimeofday(&new_sys_time, NULL) < 0) {
LOG(LOGS_WARN, LOGF_RtcLinux, "Could not settimeofday");
}
LCL_ApplyStepOffset(sys_offset);
}
} else {
LOG(LOGS_WARN, LOGF_RtcLinux, "Could not convert RTC reading to seconds since 1/1/1970");