mtd: mtd: drop NAND_ECC_SOFT_BCH enum value

This value should not be part of nand_ecc_modes_t as it specifies
algorithm not a mode. We successfully managed to introduce new "algo"
field which is respected now.
Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>

drivers/mtd/nand/fsmc_nand.c

@@ -959,7 +959,6 @@ static int __init fsmc_nand_probe(struct platform_device *pdev)
 			break;
 
 		case NAND_ECC_SOFT:
-		case NAND_ECC_SOFT_BCH:
 			if (nand->ecc.algo == NAND_ECC_BCH) {
 				dev_info(&pdev->dev, "Using 4-bit SW BCH ECC scheme\n");
 				break;
@@ -974,7 +973,7 @@ static int __init fsmc_nand_probe(struct platform_device *pdev)
 		 * Don't set layout for BCH4 SW ECC. This will be
 		 * generated later in nand_bch_init() later.
 		 */
-		if (nand->ecc.mode != NAND_ECC_SOFT_BCH) {
+		if (nand->ecc.mode == NAND_ECC_HW) {
 			switch (mtd->oobsize) {
 			case 16:
 			case 64:

drivers/mtd/nand/jz4780_nand.c

@@ -179,7 +179,6 @@ static int jz4780_nand_init_ecc(struct jz4780_nand_chip *nand, struct device *de
 		chip->ecc.correct = jz4780_nand_ecc_correct;
 		/* fall through */
 	case NAND_ECC_SOFT:
-	case NAND_ECC_SOFT_BCH:
 		dev_info(dev, "using %s (strength %d, size %d, bytes %d)\n",
 			(nfc->bch) ? "hardware BCH" : "software ECC",
 			chip->ecc.strength, chip->ecc.size, chip->ecc.bytes);

drivers/mtd/nand/mxc_nand.c

@@ -1625,7 +1625,6 @@ static int mxcnd_probe(struct platform_device *pdev)
 		break;
 
 	case NAND_ECC_SOFT:
-	case NAND_ECC_SOFT_BCH:
 		break;
 
 	default:

drivers/mtd/nand/nand_base.c

@@ -4183,8 +4183,7 @@ static int nand_set_ecc_soft_ops(struct mtd_info *mtd)
 	struct nand_chip *chip = mtd_to_nand(mtd);
 	struct nand_ecc_ctrl *ecc = &chip->ecc;
 
-	if (WARN_ON(ecc->mode != NAND_ECC_SOFT &&
-		    ecc->mode != NAND_ECC_SOFT_BCH))
+	if (WARN_ON(ecc->mode != NAND_ECC_SOFT))
 		return -EINVAL;
 
 	switch (ecc->algo) {
@@ -4331,8 +4330,7 @@ int nand_scan_tail(struct mtd_info *mtd)
 	 * If no default placement scheme is given, select an appropriate one.
 	 */
 	if (!mtd->ooblayout &&
-	    !((ecc->mode == NAND_ECC_SOFT || ecc->mode == NAND_ECC_SOFT_BCH) &&
-	       ecc->algo == NAND_ECC_BCH)) {
+	    !(ecc->mode == NAND_ECC_SOFT && ecc->algo == NAND_ECC_BCH)) {
 		switch (mtd->oobsize) {
 		case 8:
 		case 16:
@@ -4426,7 +4424,6 @@ int nand_scan_tail(struct mtd_info *mtd)
 		ecc->algo = NAND_ECC_HAMMING;
 
 	case NAND_ECC_SOFT:
-	case NAND_ECC_SOFT_BCH:
 		ret = nand_set_ecc_soft_ops(mtd);
 		if (ret) {
 			ret = -EINVAL;
@@ -4514,7 +4511,6 @@ int nand_scan_tail(struct mtd_info *mtd)
 	/* Large page NAND with SOFT_ECC should support subpage reads */
 	switch (ecc->mode) {
 	case NAND_ECC_SOFT:
-	case NAND_ECC_SOFT_BCH:
 		if (chip->page_shift > 9)
 			chip->options |= NAND_SUBPAGE_READ;
 		break;
@@ -4614,8 +4610,7 @@ void nand_release(struct mtd_info *mtd)
 {
 	struct nand_chip *chip = mtd_to_nand(mtd);
 
-	if ((chip->ecc.mode == NAND_ECC_SOFT ||
-	     chip->ecc.mode == NAND_ECC_SOFT_BCH) &&
+	if (chip->ecc.mode == NAND_ECC_SOFT &&
 	    chip->ecc.algo == NAND_ECC_BCH)
 		nand_bch_free((struct nand_bch_control *)chip->ecc.priv);
 

drivers/mtd/nand/nandsim.c

@@ -2339,7 +2339,7 @@ static int __init ns_init_module(void)
 			retval = -EINVAL;
 			goto error;
 		}
-		chip->ecc.mode = NAND_ECC_SOFT_BCH;
+		chip->ecc.mode = NAND_ECC_SOFT;
 		chip->ecc.algo = NAND_ECC_BCH;
 		chip->ecc.size = 512;
 		chip->ecc.strength = bch;

drivers/mtd/nand/sunxi_nand.c

@@ -1612,8 +1612,6 @@ static int sunxi_nand_ecc_init(struct mtd_info *mtd, struct nand_ecc_ctrl *ecc,
 		return -EINVAL;
 
 	switch (ecc->mode) {
-	case NAND_ECC_SOFT_BCH:
-		break;
 	case NAND_ECC_HW:
 		ret = sunxi_nand_hw_ecc_ctrl_init(mtd, ecc, np);
 		if (ret)

include/linux/mtd/nand.h

@@ -116,7 +116,6 @@ typedef enum {
 	NAND_ECC_HW,
 	NAND_ECC_HW_SYNDROME,
 	NAND_ECC_HW_OOB_FIRST,
-	NAND_ECC_SOFT_BCH,
 } nand_ecc_modes_t;
 
 enum nand_ecc_algo {