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drivers: rtc: stm32: fix error handling

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re-enable Write Protection when Init Mode errors.

Signed-off-by: Abderrahmane Jarmouni <abderrahmane.jarmouni-ext@st.com>
This commit is contained in:
Abderrahmane Jarmouni 2024-05-15 15:28:28 +02:00 • committed by Maureen Helm
commit 4d038fb523
1 changed files with 3 additions and 8 deletions
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11
drivers/rtc/rtc_ll_stm32.c
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@ -392,9 +392,7 @@ static int rtc_stm32_init(const struct device *dev)
static int rtc_stm32_set_time(const struct device *dev, const struct rtc_time *timeptr)
{
struct rtc_stm32_data *data = dev->data;
uint32_t real_year = timeptr->tm_year + TM_YEAR_REF;
int err = 0;
if (real_year < RTC_YEAR_REF) {
@ -423,11 +421,8 @@ static int rtc_stm32_set_time(const struct device *dev, const struct rtc_time *t
ErrorStatus status = LL_RTC_EnterInitMode(RTC);
if (status != SUCCESS) {
#if RTC_STM32_BACKUP_DOMAIN_WRITE_PROTECTION
LL_PWR_DisableBkUpAccess();
#endif /* RTC_STM32_BACKUP_DOMAIN_WRITE_PROTECTION */
k_mutex_unlock(&data->lock);
return -EIO;
err = -EIO;
goto protect_unlock_return;
}
LL_RTC_DATE_SetYear(RTC, bin2bcd(real_year - RTC_YEAR_REF));
@ -442,13 +437,13 @@ static int rtc_stm32_set_time(const struct device *dev, const struct rtc_time *t
LL_RTC_DATE_SetWeekDay(RTC, timeptr->tm_wday);
}
LL_RTC_TIME_SetHour(RTC, bin2bcd(timeptr->tm_hour));
LL_RTC_TIME_SetMinute(RTC, bin2bcd(timeptr->tm_min));
LL_RTC_TIME_SetSecond(RTC, bin2bcd(timeptr->tm_sec));
LL_RTC_DisableInitMode(RTC);
protect_unlock_return:
LL_RTC_EnableWriteProtection(RTC);
#if RTC_STM32_BACKUP_DOMAIN_WRITE_PROTECTION