diff --git a/kernel/power/swsusp.c b/kernel/power/swsusp.c
index 2d9d08f..4e90905 100644
--- a/kernel/power/swsusp.c
+++ b/kernel/power/swsusp.c
@@ -153,11 +153,13 @@
 {
 	int i;
 
+	if (!swsusp_resume_device)
+		return -ENODEV;
 	spin_lock(&swap_lock);
 	for (i = 0; i < MAX_SWAPFILES; i++) {
 		if (!(swap_info[i].flags & SWP_WRITEOK))
 			continue;
-		if (!swsusp_resume_device || is_resume_device(swap_info + i)) {
+		if (is_resume_device(swap_info + i)) {
 			spin_unlock(&swap_lock);
 			root_swap = i;
 			return 0;