1 files changed, 15 insertions, 0 deletions

diff --git a/include/linux/mtd/mtd.h b/include/linux/mtd/mtd.h
index 8485e42a9b09..fe8d77ebec13 100644
--- a/include/linux/mtd/mtd.h
+++ b/include/linux/mtd/mtd.h
@@ -110,6 +110,21 @@ struct mtd_oob_ops {
         uint8_t         *oobbuf;
 };
 
+#define MTD_MAX_OOBFREE_ENTRIES_LARGE   32
+#define MTD_MAX_ECCPOS_ENTRIES_LARGE    448
+/*
+ * Internal ECC layout control structure. For historical reasons, there is a
+ * similar, smaller struct nand_ecclayout_user (in mtd-abi.h) that is retained
+ * for export to user-space via the ECCGETLAYOUT ioctl.
+ * nand_ecclayout should be expandable in the future simply by the above macros.
+ */
+struct nand_ecclayout {
+        __u32 eccbytes;
+        __u32 eccpos[MTD_MAX_ECCPOS_ENTRIES_LARGE];
+        __u32 oobavail;
+        struct nand_oobfree oobfree[MTD_MAX_OOBFREE_ENTRIES_LARGE];
+};
+
 struct mtd_info {
         u_char type;
         uint32_t flags;