Merge back earlier material related to system sleep for 7.1

Author: rafaeljw

arch/x86/power/hibernate_64.c

@@ -14,8 +14,6 @@
 #include <linux/kdebug.h>
 #include <linux/pgtable.h>
 
-#include <crypto/hash.h>
-
 #include <asm/e820/api.h>
 #include <asm/init.h>
 #include <asm/proto.h>

kernel/power/user.c

@@ -322,11 +322,14 @@ static long snapshot_ioctl(struct file *filp, unsigned int cmd,
 		error = snapshot_write_finalize(&data->handle);
 		if (error)
 			break;
-		if (data->mode != O_WRONLY || !data->frozen ||
-		    !snapshot_image_loaded(&data->handle)) {
+		if (data->mode != O_WRONLY || !data->frozen) {
 			error = -EPERM;
 			break;
 		}
+		if (!snapshot_image_loaded(&data->handle)) {
+			error = -ENODATA;
+			break;
+		}
 		error = hibernation_restore(data->platform_support);
 		break;