Index: sys/arch/x86/acpi/acpi_machdep.c
===================================================================
RCS file: /cvsroot/src/sys/arch/x86/acpi/acpi_machdep.c,v
retrieving revision 1.32
diff -p -u -r1.32 acpi_machdep.c
--- sys/arch/x86/acpi/acpi_machdep.c	12 May 2021 23:22:33 -0000	1.32
+++ sys/arch/x86/acpi/acpi_machdep.c	22 Dec 2021 14:44:00 -0000
@@ -91,6 +91,7 @@ __KERNEL_RCSID(0, "$NetBSD: acpi_machdep
 #else
 # define VBIOS_RESET_DEFAULT	1
 #endif
+int acpi_md_vbios_reset = 0;
 
 ACPI_STATUS
 acpi_md_OsInitialize(void)
Index: sys/arch/x86/acpi/acpi_wakeup.c
===================================================================
RCS file: /cvsroot/src/sys/arch/x86/acpi/acpi_wakeup.c,v
retrieving revision 1.54
diff -p -u -r1.54 acpi_wakeup.c
--- sys/arch/x86/acpi/acpi_wakeup.c	1 Jun 2021 21:29:24 -0000	1.54
+++ sys/arch/x86/acpi/acpi_wakeup.c	22 Dec 2021 14:44:01 -0000
@@ -107,7 +107,7 @@ __KERNEL_RCSID(0, "$NetBSD: acpi_wakeup.
 static paddr_t acpi_wakeup_paddr = 3 * PAGE_SIZE;
 static vaddr_t acpi_wakeup_vaddr;
 
-int acpi_md_vbios_reset = 0; /* Referenced by dev/pci/vga_pci.c */
+extern int acpi_md_vbios_reset;
 int acpi_md_vesa_modenum = 0; /* Referenced by arch/x86/x86/genfb_machdep.c */
 static int acpi_md_beep_on_reset = 0;