extern void unmap_unisys_acpi_oem_table(unsigned long oem_addr);
 extern void setup_unisys(void);
 
-#ifndef CONFIG_X86_GENERICARCH
-extern int default_acpi_madt_oem_check(char *oem_id, char *oem_table_id);
-extern int mps_oem_check(struct mpc_table *mpc, char *oem, char *productid);
-#endif
-
 #ifdef CONFIG_ACPI
-
 static inline int es7000_check_dsdt(void)
 {
        struct acpi_table_header header;
 
 #define _ASM_X86_MACH_DEFAULT_MACH_MPPARSE_H
 
 static inline int
-mps_oem_check(struct mpc_table *mpc, char *oem, char *productid)
+generic_mps_oem_check(struct mpc_table *mpc, char *oem, char *productid)
 {
        return 0;
 }
 
 #ifndef _ASM_X86_MACH_GENERIC_MACH_MPPARSE_H
 #define _ASM_X86_MACH_GENERIC_MACH_MPPARSE_H
 
-
-extern int mps_oem_check(struct mpc_table *, char *, char *);
+extern int generic_mps_oem_check(struct mpc_table *, char *, char *);
 
 extern int default_acpi_madt_oem_check(char *, char *);
 
 
 #define setup_summit() {}
 #endif
 
-static inline int mps_oem_check(struct mpc_table *mpc, char *oem,
-               char *productid)
+static inline int
+summit_mps_oem_check(struct mpc_table *mpc, char *oem, char *productid)
 {
        if (!strncmp(oem, "IBM ENSW", 8) &&
                        (!strncmp(productid, "VIGIL SMP", 9)
 
                return 0;
 
 #ifdef CONFIG_X86_32
-       mps_oem_check(mpc, oem, str);
+       generic_mps_oem_check(mpc, oem, str);
 #endif
        /* save the local APIC address, it might be non-default */
        if (!acpi_lapic)
 
        .check_phys_apicid_present      = bigsmp_check_phys_apicid_present,
        .enable_apic_mode               = NULL,
        .phys_pkg_id                    = bigsmp_phys_pkg_id,
-       .mps_oem_check                  = mps_oem_check,
+       .mps_oem_check                  = NULL,
 
        .get_apic_id                    = get_apic_id,
        .set_apic_id                    = NULL,
 
        .check_phys_apicid_present      = default_check_phys_apicid_present,
        .enable_apic_mode               = NULL,
        .phys_pkg_id                    = default_phys_pkg_id,
-       .mps_oem_check                  = mps_oem_check,
+       .mps_oem_check                  = NULL,
 
        .get_apic_id                    = get_apic_id,
        .set_apic_id                    = NULL,
 
 }
 
 static __init int
-mps_oem_check(struct mpc_table *mpc, char *oem, char *productid)
+es7000_mps_oem_check(struct mpc_table *mpc, char *oem, char *productid)
 {
        if (mpc->oemptr) {
                struct mpc_oemtable *oem_table =
                        (struct mpc_oemtable *)mpc->oemptr;
+
                if (!strncmp(oem, "UNISYS", 6))
                        return parse_unisys_oem((char *)oem_table);
        }
        .check_phys_apicid_present      = es7000_check_phys_apicid_present,
        .enable_apic_mode               = es7000_enable_apic_mode,
        .phys_pkg_id                    = es7000_phys_pkg_id,
-       .mps_oem_check                  = mps_oem_check,
+       .mps_oem_check                  = es7000_mps_oem_check,
 
        .get_apic_id                    = get_apic_id,
        .set_apic_id                    = NULL,
 
 #include <asm/numaq/wakecpu.h>
 #include <asm/numaq.h>
 
-static int mps_oem_check(struct mpc_table *mpc, char *oem, char *productid)
+static int __numaq_mps_oem_check(struct mpc_table *mpc, char *oem, char *productid)
 {
        numaq_mps_oem_check(mpc, oem, productid);
        return found_numaq;
        .check_phys_apicid_present      = numaq_check_phys_apicid_present,
        .enable_apic_mode               = NULL,
        .phys_pkg_id                    = numaq_phys_pkg_id,
-       .mps_oem_check                  = mps_oem_check,
+       .mps_oem_check                  = __numaq_mps_oem_check,
 
        .get_apic_id                    = get_apic_id,
        .set_apic_id                    = NULL,
 
 
 /* These functions can switch the APIC even after the initial ->probe() */
 
-int __init mps_oem_check(struct mpc_table *mpc, char *oem, char *productid)
+int __init
+generic_mps_oem_check(struct mpc_table *mpc, char *oem, char *productid)
 {
        int i;
 
 
        .check_phys_apicid_present      = summit_check_phys_apicid_present,
        .enable_apic_mode               = NULL,
        .phys_pkg_id                    = summit_phys_pkg_id,
-       .mps_oem_check                  = mps_oem_check,
+       .mps_oem_check                  = summit_mps_oem_check,
 
        .get_apic_id                    = get_apic_id,
        .set_apic_id                    = NULL,