[PATCH v2] rtc: ftrtc010: fix cast

[alexandre.belloni@bootlin.com]

From: Alexandre Belloni <alexandre.belloni@bootlin.com>

The hour and minute registers will rollover before the multiplication to
convert to a number of seconds can exceed an 32bit integer, there is no
need to cast them.

Reported-by: Dan Carpenter <error27@gmail.com>
Link: https://patch.msgid.link/20261002105946.8rdteIpO7uWGEcTlS65F8iSi4gsRoXi2kgq8FTSaDPA@z/
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
---
Changes in v2:
 - put grouping parentheses back

 drivers/rtc/rtc-ftrtc010.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/drivers/rtc/rtc-ftrtc010.c b/drivers/rtc/rtc-ftrtc010.c
index b29c96be40f4..c66d4a85f23c 100644
--- a/drivers/rtc/rtc-ftrtc010.c
+++ b/drivers/rtc/rtc-ftrtc010.c
@@ -72,7 +72,7 @@ static int ftrtc010_rtc_read_time(struct device *dev, struct rtc_time *tm)
 	days = readl(rtc->rtc_base + FTRTC010_RTC_DAYS);
 	offset = readl(rtc->rtc_base + FTRTC010_RTC_RECORD);
 
-	time = (timeu64_t)(offset + days * 86400 + hour * 3600 + min * 60 + sec);
+	time = offset + (timeu64_t)days * 86400 + hour * 3600 + min * 60 + sec;
 
 	rtc_time64_to_tm(time, tm);
 
@@ -92,8 +92,7 @@ static int ftrtc010_rtc_set_time(struct device *dev, struct rtc_time *tm)
 	hour = readl(rtc->rtc_base + FTRTC010_RTC_HOUR);
 	day = readl(rtc->rtc_base + FTRTC010_RTC_DAYS);
 
-	offset = time - ((timeu64_t)day * 86400 + (timeu64_t)hour * 3600 +
-			 (timeu64_t)min * 60 + (timeu64_t)sec);
+	offset = time - ((timeu64_t)day * 86400 + hour * 3600 + min * 60 + sec);
 
 	writel(offset, rtc->rtc_base + FTRTC010_RTC_RECORD);
 	writel(0x01, rtc->rtc_base + FTRTC010_RTC_CR);
-- 
2.55.0