diff --git a/arch/x86/boot/compressed/eboot.c b/arch/x86/boot/compressed/eboot.c
index 8615f75..35ee62f 100644
--- a/arch/x86/boot/compressed/eboot.c
+++ b/arch/x86/boot/compressed/eboot.c
@@ -258,7 +258,7 @@
 	u64 store_size, remaining_size, var_size;
 	efi_status_t status;
 
-	if (!sys_table->runtime->query_variable_info)
+	if (sys_table->runtime->hdr.revision < EFI_2_00_SYSTEM_TABLE_REVISION)
 		return EFI_UNSUPPORTED;
 
 	data = (struct setup_data *)(unsigned long)params->hdr.setup_data;
@@ -266,7 +266,7 @@
 	while (data && data->next)
 		data = (struct setup_data *)(unsigned long)data->next;
 
-	status = efi_call_phys4(sys_table->runtime->query_variable_info,
+	status = efi_call_phys4((void *)sys_table->runtime->query_variable_info,
 				EFI_VARIABLE_NON_VOLATILE |
 				EFI_VARIABLE_BOOTSERVICE_ACCESS |
 				EFI_VARIABLE_RUNTIME_ACCESS, &store_size,