Merge branch 'mtd/fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux

Pull mtd fixes from Miquel Raynal.

* 'mtd/fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux:
  mtd: rawnand: stm32_fmc2: fix broken ECC
  mtd: spi-nor: Fix address width on flash chips > 16MB
  mtd: spi-nor: Don't copy self-pointing struct around
  mtd: rawnand: ifc: Move the ECC engine initialization to the right place
  mtd: rawnand: mxc: Move the ECC engine initialization to the right place

Author: torvalds

drivers/mtd/nand/raw/fsl_ifc_nand.c

@@ -707,6 +707,30 @@ static int fsl_ifc_attach_chip(struct nand_chip *chip)
 {
 	struct mtd_info *mtd = nand_to_mtd(chip);
 	struct fsl_ifc_mtd *priv = nand_get_controller_data(chip);
+	struct fsl_ifc_ctrl *ctrl = priv->ctrl;
+	struct fsl_ifc_global __iomem *ifc_global = ctrl->gregs;
+	u32 csor;
+
+	csor = ifc_in32(&ifc_global->csor_cs[priv->bank].csor);
+
+	/* Must also set CSOR_NAND_ECC_ENC_EN if DEC_EN set */
+	if (csor & CSOR_NAND_ECC_DEC_EN) {
+		chip->ecc.engine_type = NAND_ECC_ENGINE_TYPE_ON_HOST;
+		mtd_set_ooblayout(mtd, &fsl_ifc_ooblayout_ops);
+
+		/* Hardware generates ECC per 512 Bytes */
+		chip->ecc.size = 512;
+		if ((csor & CSOR_NAND_ECC_MODE_MASK) == CSOR_NAND_ECC_MODE_4) {
+			chip->ecc.bytes = 8;
+			chip->ecc.strength = 4;
+		} else {
+			chip->ecc.bytes = 16;
+			chip->ecc.strength = 8;
+		}
+	} else {
+		chip->ecc.engine_type = NAND_ECC_ENGINE_TYPE_SOFT;
+		chip->ecc.algo = NAND_ECC_ALGO_HAMMING;
+	}
 
 	dev_dbg(priv->dev, "%s: nand->numchips = %d\n", __func__,
 		nanddev_ntargets(&chip->base));
@@ -910,25 +934,6 @@ static int fsl_ifc_chip_init(struct fsl_ifc_mtd *priv)
 		return -ENODEV;
 	}
 
-	/* Must also set CSOR_NAND_ECC_ENC_EN if DEC_EN set */
-	if (csor & CSOR_NAND_ECC_DEC_EN) {
-		chip->ecc.engine_type = NAND_ECC_ENGINE_TYPE_ON_HOST;
-		mtd_set_ooblayout(mtd, &fsl_ifc_ooblayout_ops);
-
-		/* Hardware generates ECC per 512 Bytes */
-		chip->ecc.size = 512;
-		if ((csor & CSOR_NAND_ECC_MODE_MASK) == CSOR_NAND_ECC_MODE_4) {
-			chip->ecc.bytes = 8;
-			chip->ecc.strength = 4;
-		} else {
-			chip->ecc.bytes = 16;
-			chip->ecc.strength = 8;
-		}
-	} else {
-		chip->ecc.engine_type = NAND_ECC_ENGINE_TYPE_SOFT;
-		chip->ecc.algo = NAND_ECC_ALGO_HAMMING;
-	}
-
 	ret = fsl_ifc_sram_init(priv);
 	if (ret)
 		return ret;

drivers/mtd/nand/raw/mxc_nand.c

@@ -1681,6 +1681,11 @@ static int mxcnd_attach_chip(struct nand_chip *chip)
 	struct mxc_nand_host *host = nand_get_controller_data(chip);
 	struct device *dev = mtd->dev.parent;
 
+	chip->ecc.bytes = host->devtype_data->eccbytes;
+	host->eccsize = host->devtype_data->eccsize;
+	chip->ecc.size = 512;
+	mtd_set_ooblayout(mtd, host->devtype_data->ooblayout);
+
 	switch (chip->ecc.engine_type) {
 	case NAND_ECC_ENGINE_TYPE_ON_HOST:
 		chip->ecc.read_page = mxc_nand_read_page;
@@ -1836,19 +1841,7 @@ static int mxcnd_probe(struct platform_device *pdev)
 	if (host->devtype_data->axi_offset)
 		host->regs_axi = host->base + host->devtype_data->axi_offset;
 
-	this->ecc.bytes = host->devtype_data->eccbytes;
-	host->eccsize = host->devtype_data->eccsize;
-
 	this->legacy.select_chip = host->devtype_data->select_chip;
-	this->ecc.size = 512;
-	mtd_set_ooblayout(mtd, host->devtype_data->ooblayout);
-
-	if (host->pdata.hw_ecc) {
-		this->ecc.engine_type = NAND_ECC_ENGINE_TYPE_ON_HOST;
-	} else {
-		this->ecc.engine_type = NAND_ECC_ENGINE_TYPE_SOFT;
-		this->ecc.algo = NAND_ECC_ALGO_HAMMING;
-	}
 
 	/* NAND bus width determines access functions used by upper layer */
 	if (host->pdata.width == 2)

drivers/mtd/nand/raw/stm32_fmc2_nand.c

@@ -1708,6 +1708,13 @@ static int stm32_fmc2_nfc_attach_chip(struct nand_chip *chip)
 		return -EINVAL;
 	}
 
+	/* Default ECC settings in case they are not set in the device tree */
+	if (!chip->ecc.size)
+		chip->ecc.size = FMC2_ECC_STEP_SIZE;
+
+	if (!chip->ecc.strength)
+		chip->ecc.strength = FMC2_ECC_BCH8;
+
 	ret = nand_ecc_choose_conf(chip, &stm32_fmc2_nfc_ecc_caps,
 				   mtd->oobsize - FMC2_BBM_LEN);
 	if (ret) {
@@ -1727,8 +1734,7 @@ static int stm32_fmc2_nfc_attach_chip(struct nand_chip *chip)
 
 	mtd_set_ooblayout(mtd, &stm32_fmc2_nfc_ooblayout_ops);
 
-	if (chip->options & NAND_BUSWIDTH_16)
-		stm32_fmc2_nfc_set_buswidth_16(nfc, true);
+	stm32_fmc2_nfc_setup(chip);
 
 	return 0;
 }
@@ -1952,11 +1958,6 @@ static int stm32_fmc2_nfc_probe(struct platform_device *pdev)
 	chip->options |= NAND_BUSWIDTH_AUTO | NAND_NO_SUBPAGE_WRITE |
 			 NAND_USES_DMA;
 
-	/* Default ECC settings */
-	chip->ecc.engine_type = NAND_ECC_ENGINE_TYPE_ON_HOST;
-	chip->ecc.size = FMC2_ECC_STEP_SIZE;
-	chip->ecc.strength = FMC2_ECC_BCH8;
-
 	/* Scan to find existence of the device */
 	ret = nand_scan(chip, nand->ncs);
 	if (ret)

drivers/mtd/spi-nor/core.c

@@ -2701,11 +2701,10 @@ static void spi_nor_sfdp_init_params(struct spi_nor *nor)
 
 	memcpy(&sfdp_params, nor->params, sizeof(sfdp_params));
 
-	if (spi_nor_parse_sfdp(nor, &sfdp_params)) {
+	if (spi_nor_parse_sfdp(nor, nor->params)) {
+		memcpy(nor->params, &sfdp_params, sizeof(*nor->params));
 		nor->addr_width = 0;
 		nor->flags &= ~SNOR_F_4B_OPCODES;
-	} else {
-		memcpy(nor->params, &sfdp_params, sizeof(*nor->params));
 	}
 }
 
@@ -3009,13 +3008,15 @@ static int spi_nor_set_addr_width(struct spi_nor *nor)
 		/* already configured from SFDP */
 	} else if (nor->info->addr_width) {
 		nor->addr_width = nor->info->addr_width;
-	} else if (nor->mtd.size > 0x1000000) {
-		/* enable 4-byte addressing if the device exceeds 16MiB */
-		nor->addr_width = 4;
 	} else {
 		nor->addr_width = 3;
 	}
 
+	if (nor->addr_width == 3 && nor->mtd.size > 0x1000000) {
+		/* enable 4-byte addressing if the device exceeds 16MiB */
+		nor->addr_width = 4;
+	}
+
 	if (nor->addr_width > SPI_NOR_MAX_ADDR_WIDTH) {
 		dev_dbg(nor->dev, "address width is too large: %u\n",
 			nor->addr_width);