[MTD] [NAND] Blackfin NFC Driver: fix bug - hw ecc calc by making sur…

…e we extract 11 bits from each register instead of 10

Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>

drivers/mtd/nand/bf5xx_nand.c

@@ -298,7 +298,7 @@ static int bf5xx_nand_calculate_ecc(struct mtd_info *mtd,
 	ecc0 = bfin_read_NFC_ECC0();
 	ecc1 = bfin_read_NFC_ECC1();
 
-	code[0] = (ecc0 & 0x3FF) | ((ecc1 & 0x3FF) << 11);
+	code[0] = (ecc0 & 0x7ff) | ((ecc1 & 0x7ff) << 11);
 
 	dev_dbg(info->device, "returning ecc 0x%08x\n", code[0]);
 
@@ -310,7 +310,7 @@ static int bf5xx_nand_calculate_ecc(struct mtd_info *mtd,
 	if (page_size == 512) {
 		ecc0 = bfin_read_NFC_ECC2();
 		ecc1 = bfin_read_NFC_ECC3();
-		code[1] = (ecc0 & 0x3FF) | ((ecc1 & 0x3FF) << 11);
+		code[1] = (ecc0 & 0x7ff) | ((ecc1 & 0x7ff) << 11);
 
 		/* second 3 bytes in ecc_code for second 256
 		 * bytes of 512 page size