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Commit 7cf9c19a authored by Boris Brezillon's avatar Boris Brezillon
Browse files

mtd: nand: bch: switch to mtd_ooblayout_ops 



Replace the nand_ecclayout definition by the equivalent mtd_ooblayout_ops
definition.

Signed-off-by: default avatarBoris Brezillon <boris.brezillon@free-electrons.com>
parent 41b207a7

drivers/mtd/nand/nand_base.c

+15 −0
Original line number Diff line number Diff line
@@ -4294,6 +4294,21 @@ int nand_scan_tail(struct mtd_info *mtd) 
			ecc->strength = 4;

		}



		/*

		 * if no ecc placement scheme was provided pickup the default

		 * large page one.

		 */

		if (!mtd->ooblayout) {

			/* handle large page devices only */

			if (mtd->oobsize < 64) {

				WARN(1, "OOB layout is required when using software BCH on small pages\n");

				ret = -EINVAL;

				goto err_free;

			}



			mtd_set_ooblayout(mtd, &nand_ooblayout_lp_ops);

		}



		/* See nand_bch_init() for details. */

		ecc->bytes = 0;

		ecc->priv = nand_bch_init(mtd);

drivers/mtd/nand/nand_bch.c

+11 −30
Original line number Diff line number Diff line
@@ -32,13 +32,11 @@ 
/**

 * struct nand_bch_control - private NAND BCH control structure

 * @bch:       BCH control structure

 * @ecclayout: private ecc layout for this BCH configuration

 * @errloc:    error location array

 * @eccmask:   XOR ecc mask, allows erased pages to be decoded as valid

 */

struct nand_bch_control {

	struct bch_control   *bch;

	struct nand_ecclayout ecclayout;

	unsigned int         *errloc;

	unsigned char        *eccmask;

};
@@ -124,7 +122,6 @@ struct nand_bch_control *nand_bch_init(struct mtd_info *mtd) 
{

	struct nand_chip *nand = mtd_to_nand(mtd);

	unsigned int m, t, eccsteps, i;

	struct nand_ecclayout *layout = nand->ecc.layout;

	struct nand_bch_control *nbc = NULL;

	unsigned char *erased_page;

	unsigned int eccsize = nand->ecc.size;
@@ -161,35 +158,19 @@ struct nand_bch_control *nand_bch_init(struct mtd_info *mtd) 


	eccsteps = mtd->writesize/eccsize;



	/* if no ecc placement scheme was provided, build one */

	if (!layout) {



		/* handle large page devices only */

		if (mtd->oobsize < 64) {

			printk(KERN_WARNING "must provide an oob scheme for "

			       "oobsize %d\n", mtd->oobsize);

			goto fail;

		}



		layout = &nbc->ecclayout;

		layout->eccbytes = eccsteps*eccbytes;

	/*

	 * Rely on the default ecclayout to ooblayout wrapper provided by MTD

	 * core if ecc.layout is not NULL.

	 * FIXME: this should be removed when all callers have moved to the

	 * mtd_ooblayout_ops approach.

	 */

	mtd_set_ecclayout(mtd, nand->ecc.layout);



		/* reserve 2 bytes for bad block marker */

		if (layout->eccbytes+2 > mtd->oobsize) {

			printk(KERN_WARNING "no suitable oob scheme available "

			       "for oobsize %d eccbytes %u\n", mtd->oobsize,

			       eccbytes);

	/* Check that we have an oob layout description. */

	if (!mtd->ooblayout) {

		pr_warn("missing oob scheme");

		goto fail;

	}

		/* put ecc bytes at oob tail */

		for (i = 0; i < layout->eccbytes; i++)

			layout->eccpos[i] = mtd->oobsize-layout->eccbytes+i;



		layout->oobfree[0].offset = 2;

		layout->oobfree[0].length = mtd->oobsize-2-layout->eccbytes;



		nand->ecc.layout = layout;

	}



	/* sanity checks */

	if (8*(eccsize+eccbytes) >= (1 << m)) {