nand_read_byte    600 drivers/mtd/nand/raw/nand_legacy.c 	if (!chip->legacy.read_byte || chip->legacy.read_byte == nand_read_byte)
nand_read_byte    601 drivers/mtd/nand/raw/nand_legacy.c 		chip->legacy.read_byte = busw ? nand_read_byte16 : nand_read_byte;