limit a variable to the scope inside #ifdef where it is used

diff --git a/sys/arch/arm64/arm64/cpu.c b/sys/arch/arm64/arm64/cpu.c
index 4569410..4f7df21 100644 (file)
--- a/sys/arch/arm64/arm64/cpu.c
+++ b/sys/arch/arm64/arm64/cpu.c
@@ -1,4 +1,4 @@
-/*     $OpenBSD: cpu.c,v 1.57 2021/11/22 19:22:59 kettenis Exp $       */
+/*     $OpenBSD: cpu.c,v 1.58 2021/11/23 01:03:35 deraadt Exp $        */
 
 /*
  * Copyright (c) 2016 Dale Rahn <drahn@dalerahn.com>
@@ -605,7 +605,6 @@ cpu_attach(struct device *parent, struct device *dev, void *aux)
        struct fdt_attach_args *faa = aux;
        struct cpu_info *ci;
        uint64_t mpidr = READ_SPECIALREG(mpidr_el1);
-       uint64_t midr = READ_SPECIALREG(midr_el1);
        uint64_t id_aa64mmfr1, sctlr;
        uint32_t opp;
 
@@ -638,6 +637,7 @@ cpu_attach(struct device *parent, struct device *dev, void *aux)
 
 #ifdef MULTIPROCESSOR
        if (ci->ci_flags & CPUF_AP) {
+               uint64_t midr = READ_SPECIALREG(midr_el1);
                char buf[32];
                uint64_t spinup_data = 0;
                int spinup_method = 0;