Index: linux-3.10.20/drivers/misc/mediatek/nand/mt7623/mtk_nand.c
===================================================================
--- linux-3.10.20.orig/drivers/misc/mediatek/nand/mt7623/mtk_nand.c
+++ linux-3.10.20/drivers/misc/mediatek/nand/mt7623/mtk_nand.c
@@ -6247,8 +6247,9 @@ static int mtk_nand_probe(struct platfor
     nand_chip->write_page = mtk_nand_write_page;
     nand_chip->read_page = mtk_nand_read_page;
 	nand_chip->read_subpage = mtk_nand_read_subpage;
-    nand_chip->ecc.write_oob = mtk_nand_write_oob;
-    nand_chip->ecc.read_oob = mtk_nand_read_oob;
+	/* OpenWrt: disable oob API, otherwise jffs2 will messing it. */
+    nand_chip->ecc.write_oob = NULL; // mtk_nand_write_oob;
+    nand_chip->ecc.read_oob = NULL; // mtk_nand_read_oob;
     nand_chip->block_markbad = mtk_nand_block_markbad;   // need to add nand_get_device()/nand_release_device().
     nand_chip->erase = mtk_nand_erase;
     nand_chip->block_bad = mtk_nand_block_bad;
@@ -6596,7 +6597,7 @@ static int mtk_nand_probe(struct platfor
     part_init_pmt(mtd, (u8 *) & g_exist_Partition[0]);
     err = mtd_device_register(mtd, g_exist_Partition, part_num);
 #else
-    err = mtd_device_register(mtd, g_pasStatic_Partition, 6);
+    err = mtd_device_register(mtd, g_pasStatic_Partition, 7);
 #endif
 
 #ifdef _MTK_NAND_DUMMY_DRIVER_
Index: linux-3.10.20/drivers/misc/mediatek/nand/mt7623/partition_mt.c
===================================================================
--- linux-3.10.20.orig/drivers/misc/mediatek/nand/mt7623/partition_mt.c
+++ linux-3.10.20/drivers/misc/mediatek/nand/mt7623/partition_mt.c
@@ -83,7 +83,11 @@ struct mtd_partition g_pasStatic_Partiti
             offset:         MTDPART_OFS_APPEND
      }, {
             name:           "firmware",
-            size:           MTDPART_SIZ_FULL,
+            size:           0xe000000, // FIXME: size here should be revised for nand chips of different sizes.
+            offset:         MTDPART_OFS_APPEND
+     }, {
+            name:           "bmt", // reserve bmt area for bad block remapping
+            size:           MTDPART_SIZ_FULL, // not less than BMT pool size!!!
             offset:         MTDPART_OFS_APPEND
      }
 };