From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Date: Sun, 6 Feb 2022 13:12:54 +0000 (+0100)
Subject: 4.9-stable patches
X-Git-Tag: v4.9.300~26
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=fd19ac1037b2e679a7220b8d52e9918888f27f6c;p=thirdparty%2Fkernel%2Fstable-queue.git

4.9-stable patches

added patches:
	rtc-cmos-evaluate-century-appropriate.patch
---

diff --git a/queue-4.9/rtc-cmos-evaluate-century-appropriate.patch b/queue-4.9/rtc-cmos-evaluate-century-appropriate.patch
new file mode 100644
index 00000000000..39de56eb8d9
--- /dev/null
+++ b/queue-4.9/rtc-cmos-evaluate-century-appropriate.patch
@@ -0,0 +1,46 @@
+From ff164ae39b82ee483b24579c8e22a13a8ce5bd04 Mon Sep 17 00:00:00 2001
+From: Riwen Lu <luriwen@kylinos.cn>
+Date: Thu, 6 Jan 2022 16:46:09 +0800
+Subject: rtc: cmos: Evaluate century appropriate
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+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
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+---
+ drivers/rtc/rtc-mc146818-lib.c |    2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/drivers/rtc/rtc-mc146818-lib.c
++++ b/drivers/rtc/rtc-mc146818-lib.c
+@@ -82,7 +82,7 @@ unsigned int mc146818_get_time(struct rt
+ 	time->tm_year += real_year - 72;
+ #endif
+ 
+-	if (century > 20)
++	if (century > 19)
+ 		time->tm_year += (century - 19) * 100;
+ 
+ 	/*
diff --git a/queue-4.9/series b/queue-4.9/series
index 36be72b272a..8e6c3ff1cde 100644
--- a/queue-4.9/series
+++ b/queue-4.9/series
@@ -42,3 +42,4 @@ net-macsec-verify-that-send_sci-is-on-when-setting-tx-sci-explicitly.patch
 asoc-fsl-add-missing-error-handling-in-pcm030_fabric_probe.patch
 scsi-bnx2fc-make-bnx2fc_recv_frame-mp-safe.patch
 nfsd-nfsd4_setclientid_confirm-mistakenly-expires-confirmed-client.patch
+rtc-cmos-evaluate-century-appropriate.patch