&acpi_ec_space_handler,
                                                    NULL, ec);
        if (ACPI_FAILURE(status)) {
 -              acpi_remove_gpe_handler(NULL, ec->gpe, &acpi_ec_gpe_handler);
 -              return -ENODEV;
 +              if (status == AE_NOT_FOUND) {
 +                      /*
 +                       * Maybe OS fails in evaluating the _REG object.
 +                       * The AE_NOT_FOUND error will be ignored and OS
 +                       * continue to initialize EC.
 +                       */
 +                      printk(KERN_ERR "Fail in evaluating the _REG object"
 +                              " of EC device. Broken bios is suspected.\n");
 +              } else {
 +                      acpi_remove_gpe_handler(NULL, ec->gpe,
 +                              &acpi_ec_gpe_handler);
 +                      return -ENODEV;
 +              }
        }
  
-       ec->handlers_installed = 1;
+       set_bit(EC_FLAGS_HANDLERS_INSTALLED, &ec->flags);
        return 0;
  }