From 983d7f83616922a6439b4352d1b3af488ee27f95 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Wed, 22 Nov 2023 02:45:30 +0000
Subject: [PATCH] disable uart0 uart7 uart9

---
 kernel/kernel/time/alarmtimer.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/kernel/kernel/time/alarmtimer.c b/kernel/kernel/time/alarmtimer.c
index 730b834..9810862 100644
--- a/kernel/kernel/time/alarmtimer.c
+++ b/kernel/kernel/time/alarmtimer.c
@@ -438,7 +438,7 @@
 		int ret = alarm_try_to_cancel(alarm);
 		if (ret >= 0)
 			return ret;
-		cpu_relax();
+		hrtimer_grab_expiry_lock(&alarm->timer);
 	}
 }
 EXPORT_SYMBOL_GPL(alarm_cancel);

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