linux-kernel - [PATCH 2/7] [MTD] Blackfin NFC Driver: fix bug - hw ecc calc by making sure we extract 11 bits from each register instead of 10

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Message-Id: <1217140079-20014-3-git-send-email-cooloney@kernel.org>
Date:	Sun, 27 Jul 2008 14:27:54 +0800
From:	Bryan Wu <cooloney@...nel.org>
To:	dwmw2@...radead.org, akpm@...ux-foundation.org
Cc:	linux-mtd@...ts.infradead.org, linux-kernel@...r.kernel.org,
	Mike Frysinger <vapier.adi@...il.com>,
	Bryan Wu <cooloney@...nel.org>
Subject: [PATCH 2/7] [MTD] Blackfin NFC Driver: fix bug - hw ecc calc by making sure we extract 11 bits from each register instead of 10

From: Mike Frysinger <vapier.adi@...il.com>

Signed-off-by: Mike Frysinger <vapier.adi@...il.com>
Signed-off-by: Bryan Wu <cooloney@...nel.org>
---
 drivers/mtd/nand/bf5xx_nand.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/mtd/nand/bf5xx_nand.c b/drivers/mtd/nand/bf5xx_nand.c
index 3254348..fc58afe 100644
--- a/drivers/mtd/nand/bf5xx_nand.c
+++ b/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
-- 
1.5.6

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