[MTD] Fix thinko in nand_write_page_hwecc()

Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
Signed-off-by: NDavid Woodhouse <dwmw2@infradead.org>

drivers/mtd/nand/nand_base.c

@@ -1233,7 +1233,7 @@ static void nand_write_page_hwecc(struct mtd_info *mtd, struct nand_chip *chip,
 
 	for (i = 0; eccsteps; eccsteps--, i += eccbytes, p += eccsize) {
 		chip->ecc.hwctl(mtd, NAND_ECC_WRITE);
-		chip->write_buf(mtd, p, mtd->writesize);
+		chip->write_buf(mtd, p, eccsize);
 		chip->ecc.calculate(mtd, p, &ecc_calc[i]);
 	}