--- zzzz-none-000/linux-3.10.107/arch/arc/include/asm/smp.h	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/arch/arc/include/asm/smp.h	2021-02-04 17:41:59.000000000 +0000
@@ -30,7 +30,7 @@
  * APIs provided by arch SMP code to rest of arch code
  */
 extern void __init smp_init_cpus(void);
-extern void __init first_lines_of_secondary(void);
+extern void first_lines_of_secondary(void);
 extern const char *arc_platform_smp_cpuinfo(void);
 
 /*
@@ -45,21 +45,36 @@
  * struct plat_smp_ops	- SMP callbacks provided by platform to ARC SMP
  *
  * @info:		SoC SMP specific info for /proc/cpuinfo etc
+ * @init_early_smp:	A SMP specific h/w block can init itself
+ * 			Could be common across platforms so not covered by
+ * 			mach_desc->init_early()
+ * @init_per_cpu:	Called for each core so SMP h/w block driver can do
+ * 			any needed setup per cpu (e.g. IPI request)
  * @cpu_kick:		For Master to kickstart a cpu (optionally at a PC)
- * @ipi_send:		To send IPI to a @cpumask
- * @ips_clear:		To clear IPI received by @cpu at @irq
+ * @ipi_send:		To send IPI to a @cpu
+ * @ips_clear:		To clear IPI received at @irq
  */
 struct plat_smp_ops {
 	const char 	*info;
+	void		(*init_early_smp)(void);
+	void		(*init_per_cpu)(int cpu);
 	void		(*cpu_kick)(int cpu, unsigned long pc);
-	void		(*ipi_send)(void *callmap);
-	void		(*ipi_clear)(int cpu, int irq);
+	void		(*ipi_send)(int cpu);
+	void		(*ipi_clear)(int irq);
 };
 
 /* TBD: stop exporting it for direct population by platform */
 extern struct plat_smp_ops  plat_smp_ops;
 
-#endif  /* CONFIG_SMP */
+#else /* CONFIG_SMP */
+
+static inline void smp_init_cpus(void) {}
+static inline const char *arc_platform_smp_cpuinfo(void)
+{
+	return "";
+}
+
+#endif  /* !CONFIG_SMP */
 
 /*
  * ARC700 doesn't support atomic Read-Modify-Write ops.