linux-kernel - [PATCH 3.13 132/172] mtd: nand: omap: fix ecclayout->oobfree->length

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Message-Id: <20140304200303.929007201@linuxfoundation.org>
Date:	Tue,  4 Mar 2014 12:03:36 -0800
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	stable@...r.kernel.org, Pekon Gupta <pekon@...com>,
	Brian Norris <computersforpeace@...il.com>
Subject: [PATCH 3.13 132/172] mtd: nand: omap: fix ecclayout->oobfree->length

3.13-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Pekon Gupta <pekon@...com>

commit bb38eefb6858ce16b34716145b9597a5680aa54c upstream.

This patch excludes reserved-marker byte-position from oobfree->length
calculation. Thus all bytes from oobfree->offset till end of OOB are free.

Signed-off-by: Pekon Gupta <pekon@...com>
Signed-off-by: Brian Norris <computersforpeace@...il.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/mtd/nand/omap2.c |    5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

--- a/drivers/mtd/nand/omap2.c
+++ b/drivers/mtd/nand/omap2.c
@@ -2000,9 +2000,8 @@ static int omap_nand_probe(struct platfo
 		goto return_error;
 	}
 
-	/* populate remaining ECC layout data */
-	ecclayout->oobfree->length = mtd->oobsize - (BADBLOCK_MARKER_LENGTH +
-							ecclayout->eccbytes);
+	/* all OOB bytes from oobfree->offset till end off OOB are free */
+	ecclayout->oobfree->length = mtd->oobsize - ecclayout->oobfree->offset;
 	/* check if NAND device's OOB is enough to store ECC signatures */
 	if (mtd->oobsize < (ecclayout->eccbytes + BADBLOCK_MARKER_LENGTH)) {
 		pr_err("not enough OOB bytes required = %d, available=%d\n",


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