6.6-stable review patch. If anyone has any objections, please let me know.
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From: Wolfram Sang wsa+renesas@sang-engineering.com
[ Upstream commit 55727188dfa3572aecd946e58fab9e4a64f06894 ]
tm_mon describes months from 0 to 11, but the register contains BCD from 1 to 12. tm_year contains years since 1900, but the BCD contains 20XX. Apply the offsets when converting these numbers.
Fixes: deeb4b5393e1 ("rtc: rzn1: Add new RTC driver") Signed-off-by: Wolfram Sang wsa+renesas@sang-engineering.com Reviewed-by: Miquel Raynal miquel.raynal@bootlin.com Link: https://lore.kernel.org/r/20241113113032.27409-1-wsa+renesas@sang-engineerin... Signed-off-by: Alexandre Belloni alexandre.belloni@bootlin.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/rtc/rtc-rzn1.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/drivers/rtc/rtc-rzn1.c b/drivers/rtc/rtc-rzn1.c index 56ebbd4d04814..8570c8e63d70c 100644 --- a/drivers/rtc/rtc-rzn1.c +++ b/drivers/rtc/rtc-rzn1.c @@ -111,8 +111,8 @@ static int rzn1_rtc_read_time(struct device *dev, struct rtc_time *tm) tm->tm_hour = bcd2bin(tm->tm_hour); tm->tm_wday = bcd2bin(tm->tm_wday); tm->tm_mday = bcd2bin(tm->tm_mday); - tm->tm_mon = bcd2bin(tm->tm_mon); - tm->tm_year = bcd2bin(tm->tm_year); + tm->tm_mon = bcd2bin(tm->tm_mon) - 1; + tm->tm_year = bcd2bin(tm->tm_year) + 100;
return 0; } @@ -128,8 +128,8 @@ static int rzn1_rtc_set_time(struct device *dev, struct rtc_time *tm) tm->tm_hour = bin2bcd(tm->tm_hour); tm->tm_wday = bin2bcd(rzn1_rtc_tm_to_wday(tm)); tm->tm_mday = bin2bcd(tm->tm_mday); - tm->tm_mon = bin2bcd(tm->tm_mon); - tm->tm_year = bin2bcd(tm->tm_year); + tm->tm_mon = bin2bcd(tm->tm_mon + 1); + tm->tm_year = bin2bcd(tm->tm_year - 100);
val = readl(rtc->base + RZN1_RTC_CTL2); if (!(val & RZN1_RTC_CTL2_STOPPED)) {