mtd: nand: omap: fix ecclayout->oobfree->length

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

CC: <stable@vger.kernel.org> # 3.13.x+
Signed-off-by: Pekon Gupta <pekon@ti.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>

diff --git a/drivers/mtd/nand/omap2.c b/drivers/mtd/nand/omap2.c
index 58685ab..bf642ce 100644 (file)
--- a/drivers/mtd/nand/omap2.c
+++ b/drivers/mtd/nand/omap2.c
@@ -1994,9 +1994,8 @@ static int omap_nand_probe(struct platform_device *pdev)
                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",