From 2a9a9d4f6c07f2f23b663fe5fbeac1168a5d1029 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Tue, 07 Nov 2023 06:19:50 +0000
Subject: [PATCH] support uboot change LCD parameter

---
 kernel/include/linux/delay.h |    6 ++++++
 1 files changed, 6 insertions(+), 0 deletions(-)

diff --git a/kernel/include/linux/delay.h b/kernel/include/linux/delay.h
index b78bab4..7c4bc41 100644
--- a/kernel/include/linux/delay.h
+++ b/kernel/include/linux/delay.h
@@ -64,4 +64,10 @@
 	msleep(seconds * 1000);
 }
 
+#ifdef CONFIG_PREEMPT_RT_FULL
+extern void cpu_chill(void);
+#else
+# define cpu_chill()	cpu_relax()
+#endif
+
 #endif /* defined(_LINUX_DELAY_H) */

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