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-rw-r--r--drivers/rtc/rtc-max77686.c13
1 files changed, 2 insertions, 11 deletions
diff --git a/drivers/rtc/rtc-max77686.c b/drivers/rtc/rtc-max77686.c
index b177ba199a3d..cf73e969c8cc 100644
--- a/drivers/rtc/rtc-max77686.c
+++ b/drivers/rtc/rtc-max77686.c
@@ -70,16 +70,6 @@ enum MAX77686_RTC_OP {
MAX77686_RTC_READ,
};
-static inline int max77686_rtc_calculate_wday(u8 shifted)
-{
- int counter = -1;
- while (shifted) {
- shifted >>= 1;
- counter++;
- }
- return counter;
-}
-
static void max77686_rtc_data_to_tm(u8 *data, struct rtc_time *tm,
int rtc_24hr_mode)
{
@@ -93,7 +83,8 @@ static void max77686_rtc_data_to_tm(u8 *data, struct rtc_time *tm,
tm->tm_hour += 12;
}
- tm->tm_wday = max77686_rtc_calculate_wday(data[RTC_WEEKDAY] & 0x7f);
+ /* Only a single bit is set in data[], so fls() would be equivalent */
+ tm->tm_wday = ffs(data[RTC_WEEKDAY] & 0x7f) - 1;
tm->tm_mday = data[RTC_DATE] & 0x1f;
tm->tm_mon = (data[RTC_MONTH] & 0x0f) - 1;
tm->tm_year = (data[RTC_YEAR] & 0x7f) + 100;