openwrt/target/linux/ramips/patches-4.14/0040-nand-hack.patch

--- a/drivers/mtd/nand/nand_base.c
+++ b/drivers/mtd/nand/nand_base.c
@@ -1908,6 +1908,9 @@ static int nand_do_read_ops(struct mtd_i
 						 __func__, buf);
 
 read_retry:
+#ifdef CONFIG_MTK_MTD_NAND
+			ret = chip->read_page(mtd, chip, bufpoi, page);
+#else
 			if (nand_standard_page_accessors(&chip->ecc))
 				chip->cmdfunc(mtd, NAND_CMD_READ0, 0x00, page);
 
@@ -1927,6 +1930,7 @@ read_retry:
 			else
 				ret = chip->ecc.read_page(mtd, chip, bufpoi,
 							  oob_required, page);
+#endif
 			if (ret < 0) {
 				if (use_bufpoi)
 					/* Invalidate page cache */
--- a/include/linux/mtd/rawnand.h
+++ b/include/linux/mtd/rawnand.h
@@ -897,6 +897,9 @@ struct nand_chip {
 	int (*setup_data_interface)(struct mtd_info *mtd, int chipnr,
 				    const struct nand_data_interface *conf);
 
+#ifdef CONFIG_MTK_MTD_NAND
+	int (*read_page)(struct mtd_info *mtd, struct nand_chip *chip, u8 *buf, int page);
+#endif /* CONFIG_MTK_MTD_NAND */
 
 	int chip_delay;
 	unsigned int options;