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diff --git a/arch/arm/mach-keystone/smc.S b/arch/arm/mach-keystone/smc.S
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-/* SPDX-License-Identifier: GPL-2.0-only */
-/*
- * Keystone Secure APIs
- *
- * Copyright (C) 2013 Texas Instruments, Inc.
- * Santosh Shilimkar <santosh.shilimkar@ti.com>
- */
-
-#include <linux/linkage.h>
-
-/**
- * u32 keystone_cpu_smc(u32 command, u32 cpu, u32 addr)
- *
- * Low level CPU monitor API
- * @command: Monitor command.
- * @cpu: CPU Number
- * @addr: Kernel jump address for boot CPU
- *
- * Return: Non zero value on failure
- */
- .arch_extension sec
-ENTRY(keystone_cpu_smc)
- stmfd sp!, {r4-r11, lr}
- smc #0
- ldmfd sp!, {r4-r11, pc}
-ENDPROC(keystone_cpu_smc)