efi_loader: rename parent to header

Rename the component parent of some EFI objects to header. This avoids
misunderstandings.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
diff --git a/lib/efi_loader/efi_disk.c b/lib/efi_loader/efi_disk.c
index e861fee..c037526 100644
--- a/lib/efi_loader/efi_disk.c
+++ b/lib/efi_loader/efi_disk.c
@@ -14,26 +14,30 @@
 
 const efi_guid_t efi_block_io_guid = BLOCK_IO_GUID;
 
+/**
+ * struct efi_disk_obj - EFI disk object
+ *
+ * @header:	EFI object header
+ * @ops:	EFI disk I/O protocol interface
+ * @ifname:	interface name for block device
+ * @dev_index:	device index of block device
+ * @media:	block I/O media information
+ * @dp:		device path to the block device
+ * @part:	partition
+ * @volume:	simple file system protocol of the partition
+ * @offset:	offset into disk for simple partition
+ * @desc:	internal block device descriptor
+ */
 struct efi_disk_obj {
-	/* Generic EFI object parent class data */
-	struct efi_object parent;
-	/* EFI Interface callback struct for block I/O */
+	struct efi_object header;
 	struct efi_block_io ops;
-	/* U-Boot ifname for block device */
 	const char *ifname;
-	/* U-Boot dev_index for block device */
 	int dev_index;
-	/* EFI Interface Media descriptor struct, referenced by ops */
 	struct efi_block_io_media media;
-	/* EFI device path to this block device */
 	struct efi_device_path *dp;
-	/* partition # */
 	unsigned int part;
-	/* handle to filesys proto (for partition objects) */
 	struct efi_simple_file_system_protocol *volume;
-	/* Offset into disk for simple partitions */
 	lbaint_t offset;
-	/* Internal block device */
 	struct blk_desc *desc;
 };
 
@@ -246,7 +250,7 @@
 		return EFI_OUT_OF_RESOURCES;
 
 	/* Hook up to the device list */
-	efi_add_handle(&diskobj->parent);
+	efi_add_handle(&diskobj->header);
 
 	/* Fill in object data */
 	if (part) {
@@ -258,18 +262,18 @@
 		diskobj->dp = efi_dp_from_part(desc, part);
 	}
 	diskobj->part = part;
-	ret = efi_add_protocol(&diskobj->parent, &efi_block_io_guid,
+	ret = efi_add_protocol(&diskobj->header, &efi_block_io_guid,
 			       &diskobj->ops);
 	if (ret != EFI_SUCCESS)
 		return ret;
-	ret = efi_add_protocol(&diskobj->parent, &efi_guid_device_path,
+	ret = efi_add_protocol(&diskobj->header, &efi_guid_device_path,
 			       diskobj->dp);
 	if (ret != EFI_SUCCESS)
 		return ret;
 	if (part >= 1) {
 		diskobj->volume = efi_simple_file_system(desc, part,
 							 diskobj->dp);
-		ret = efi_add_protocol(&diskobj->parent,
+		ret = efi_add_protocol(&diskobj->header,
 				       &efi_simple_file_system_protocol_guid,
 				       diskobj->volume);
 		if (ret != EFI_SUCCESS)
@@ -381,7 +385,7 @@
 
 		/* Partitions show up as block devices in EFI */
 		disks += efi_disk_create_partitions(
-					&disk->parent, desc, if_typename,
+					&disk->header, desc, if_typename,
 					desc->devnum, dev->name);
 	}
 #else
@@ -427,7 +431,7 @@
 
 			/* Partitions show up as block devices in EFI */
 			disks += efi_disk_create_partitions
-						(&disk->parent, desc,
+						(&disk->header, desc,
 						 if_typename, i, devname);
 		}
 	}