On Sat, Feb 05, 2022 at 11:11:39PM +0100, Mateusz Jończyk wrote:
From: Riwen Lu luriwen@kylinos.cn
commit ff164ae39b82ee483b24579c8e22a13a8ce5bd04 upstream.
There's limiting the year to 2069. When setting the rtc year to 2070, reading it returns 1970. Evaluate century starting from 19 to count the correct year.
$ sudo date -s 20700106 Mon 06 Jan 2070 12:00:00 AM CST $ sudo hwclock -w $ sudo hwclock -r 1970-01-06 12:00:49.604968+08:00
Fixes: 2a4daadd4d3e5071 ("rtc: cmos: ignore bogus century byte")
Signed-off-by: Riwen Lu luriwen@kylinos.cn Acked-by: Eric Wong e@80x24.org Reviewed-by: Mateusz Jończyk mat.jonczyk@o2.pl Signed-off-by: Alexandre Belloni alexandre.belloni@bootlin.com Link: https://lore.kernel.org/r/20220106084609.1223688-1-luriwen@kylinos.cn Signed-off-by: Mateusz Jończyk mat.jonczyk@o2.pl # preparation for stable
drivers/rtc/rtc-mc146818-lib.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
Hello,
I have prepared this patch for inclusion into stable. Run-tested on top of 5.16.7 and 4.9.299, works as intended.
Now queued up, thanks.
greg k-h