FAILED: patch "[PATCH] rtc: cmos: Evaluate century appropriate" failed to apply to 4.19-stable tree

The patch below does not apply to the 4.19-stable tree.
If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <[email protected]>.

thanks,

greg k-h

------------------ original commit in Linus's tree ------------------

From ff164ae39b82ee483b24579c8e22a13a8ce5bd04 Mon Sep 17 00:00:00 2001
From: Riwen Lu <[email protected]>
Date: Thu, 6 Jan 2022 16:46:09 +0800
Subject: [PATCH] rtc: cmos: Evaluate century appropriate
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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

index 7f689f1bafc5..ae9f131b43c0 100644
@@ -159,7 +159,7 @@ int mc146818_get_time(struct rtc_time *time)
 #endif
 
 #ifdef CONFIG_ACPI
-	if (p.century > 20)
+	if (p.century > 19)
 		time->tm_year += (p.century - 19) * 100;
 #endif