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2024-02-20 ea08eeccae9297f7aabd2ef7f0c2517ac4549acc

 kernel/arch/arm/mach-imx/hotplug.c
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..
@@ -1,42 +1,16 @@
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+// SPDX-License-Identifier: GPL-2.0-or-later
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 /*
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  * Copyright 2011 Freescale Semiconductor, Inc.
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  * Copyright 2011 Linaro Ltd.
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- *
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- * The code contained herein is licensed under the GNU General Public
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- * License. You may obtain a copy of the GNU General Public License
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- * Version 2 or later at the following locations:
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- *
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- * http://www.opensource.org/licenses/gpl-license.html
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- * http://www.gnu.org/copyleft/gpl.html
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  */
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 #include <linux/errno.h>
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 #include <linux/jiffies.h>
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+#include <asm/cacheflush.h>
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 #include <asm/cp15.h>
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 #include <asm/proc-fns.h>
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 #include "common.h"
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-
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-static inline void cpu_enter_lowpower(void)
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-{
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-	unsigned int v;
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-
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-	asm volatile(
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-		"mcr	p15, 0, %1, c7, c5, 0\n"
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-	"	mcr	p15, 0, %1, c7, c10, 4\n"
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-	/*
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-	 * Turn off coherency
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-	 */
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-	"	mrc	p15, 0, %0, c1, c0, 1\n"
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-	"	bic	%0, %0, %3\n"
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-	"	mcr	p15, 0, %0, c1, c0, 1\n"
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-	"	mrc	p15, 0, %0, c1, c0, 0\n"
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-	"	bic	%0, %0, %2\n"
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-	"	mcr	p15, 0, %0, c1, c0, 0\n"
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-	  : "=&r" (v)
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-	  : "r" (0), "Ir" (CR_C), "Ir" (0x40)
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-	  : "cc");
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-}
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 /*
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  * platform-specific code to shutdown a CPU
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@@ -45,7 +19,7 @@
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  */
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 void imx_cpu_die(unsigned int cpu)
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 {
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-	cpu_enter_lowpower();
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+	v7_exit_coherency_flush(louis);
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 	/*
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 	 * We use the cpu jumping argument register to sync with
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 	 * imx_cpu_kill() which is running on cpu0 and waiting for