--- /dev/null
+From pvorel@suse.cz Fri Nov 8 18:33:13 2019
+From: Petr Vorel <pvorel@suse.cz>
+Date: Fri, 8 Nov 2019 16:50:50 +0100
+Subject: alarmtimer: Change remaining ENOTSUPP to EOPNOTSUPP
+To: stable@vger.kernel.org
+Cc: Petr Vorel <pvorel@suse.cz>, Thadeu Lima de Souza Cascardo <cascardo@canonical.com>
+Message-ID: <20191108155050.12786-1-pvorel@suse.cz>
+
+From: Petr Vorel <pvorel@suse.cz>
+
+Fix backport of commit f18ddc13af981ce3c7b7f26925f099e7c6929aba upstream.
+
+Update backport to change ENOTSUPP to EOPNOTSUPP in
+alarm_timer_{del,set}(), which were removed in
+f2c45807d3992fe0f173f34af9c347d907c31686 in v4.13-rc1.
+
+Fixes: 65b7a5a36afb11a6769a70308c1ef3a2afae6bf4
+
+Signed-off-by: Petr Vorel <pvorel@suse.cz>
+Acked-by: Thadeu Lima de Souza Cascardo <cascardo@canonical.com>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+---
+ kernel/time/alarmtimer.c | 4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+
+--- a/kernel/time/alarmtimer.c
++++ b/kernel/time/alarmtimer.c
+@@ -586,7 +586,7 @@ static void alarm_timer_get(struct k_iti
+ static int alarm_timer_del(struct k_itimer *timr)
+ {
+ if (!rtcdev)
+- return -ENOTSUPP;
++ return -EOPNOTSUPP;
+
+ if (alarm_try_to_cancel(&timr->it.alarm.alarmtimer) < 0)
+ return TIMER_RETRY;
+@@ -610,7 +610,7 @@ static int alarm_timer_set(struct k_itim
+ ktime_t exp;
+
+ if (!rtcdev)
+- return -ENOTSUPP;
++ return -EOPNOTSUPP;
+
+ if (flags & ~TIMER_ABSTIME)
+ return -EINVAL;