1 files changed, 3 insertions, 3 deletions

diff --git a/include/asm-x86/mach-es7000/mach_mpparse.h b/include/asm-x86/mach-es7000/mach_mpparse.h
index 8aa10547b4b1..52ee75cd0fe1 100644
--- a/include/asm-x86/mach-es7000/mach_mpparse.h
+++ b/include/asm-x86/mach-es7000/mach_mpparse.h
@@ -29,9 +29,9 @@ extern int mps_oem_check(struct mp_config_table *mpc, char *oem,
 static inline int es7000_check_dsdt(void)
 {
         struct acpi_table_header header;
-        memcpy(&header, 0, sizeof(struct acpi_table_header));
-        acpi_get_table_header(ACPI_SIG_DSDT, 0, &header);
-        if (!strncmp(header.oem_id, "UNISYS", 6))
+
+        if (ACPI_SUCCESS(acpi_get_table_header(ACPI_SIG_DSDT, 0, &header)) &&
+            !strncmp(header.oem_id, "UNISYS", 6))
                 return 1;
         return 0;
 }