nand: Remove CONFIG_MTD_NAND_VERIFY_WRITE

The CONFIG_MTD_NAND_VERIFY_WRITE has been removed from Linux for some
time and a more generic method of NAND verification now exists in U-Boot.

Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
Tested-by: Heiko Schocher <hs@denx.de>
Acked-by: Heiko Schocher <hs@denx.de>

8 files changed, 0 insertions, 248 deletions

diff --git a/drivers/mtd/nand/davinci_nand.c b/drivers/mtd/nand/davinci_nand.c
index 41689b5165d..a3970745c95 100644
--- a/drivers/mtd/nand/davinci_nand.c
+++ b/drivers/mtd/nand/davinci_nand.c
@@ -405,18 +405,6 @@ static int nand_davinci_write_page(struct mtd_info *mtd, struct nand_chip *chip,
 		goto err;
 	}
 
-#ifdef CONFIG_MTD_NAND_VERIFY_WRITE
-	/* Send command to read back the data */
-	chip->cmdfunc(mtd, NAND_CMD_READ0, 0, page);
-
-	if (chip->verify_buf(mtd, buf, mtd->writesize)) {
-		ret = -EIO;
-		goto err;
-	}
-
-	/* Make sure the next page prog is preceded by a status read */
-	chip->cmdfunc(mtd, NAND_CMD_STATUS, -1, -1);
-#endif
 err:
 	/* restore ECC layout */
 	if (page < CONFIG_KEYSTONE_NAND_MAX_RBL_PAGE) {
diff --git a/drivers/mtd/nand/fsl_elbc_nand.c b/drivers/mtd/nand/fsl_elbc_nand.c
index 3372b642125..e85832d319d 100644
--- a/drivers/mtd/nand/fsl_elbc_nand.c
+++ b/drivers/mtd/nand/fsl_elbc_nand.c
@@ -561,41 +561,6 @@ static void fsl_elbc_read_buf(struct mtd_info *mtd, u8 *buf, int len)
 		       len, avail);
 }
 
-#if defined(CONFIG_MTD_NAND_VERIFY_WRITE)
-/*
- * Verify buffer against the FCM Controller Data Buffer
- */
-static int fsl_elbc_verify_buf(struct mtd_info *mtd,
-			       const u_char *buf, int len)
-{
-	struct nand_chip *chip = mtd->priv;
-	struct fsl_elbc_mtd *priv = chip->priv;
-	struct fsl_elbc_ctrl *ctrl = priv->ctrl;
-	int i;
-
-	if (len < 0) {
-		printf("write_buf of %d bytes", len);
-		return -EINVAL;
-	}
-
-	if ((unsigned int)len > ctrl->read_bytes - ctrl->index) {
-		printf("verify_buf beyond end of buffer "
-		       "(%d requested, %u available)\n",
-		       len, ctrl->read_bytes - ctrl->index);
-
-		ctrl->index = ctrl->read_bytes;
-		return -EINVAL;
-	}
-
-	for (i = 0; i < len; i++)
-		if (in_8(&ctrl->addr[ctrl->index + i]) != buf[i])
-			break;
-
-	ctrl->index += len;
-	return i == len && ctrl->status == LTESR_CC ? 0 : -EIO;
-}
-#endif
-
 /* This function is called after Program and Erase Operations to
  * check for success or failure.
  */
@@ -727,9 +692,6 @@ static int fsl_elbc_chip_init(int devnum, u8 *addr)
 	nand->read_byte = fsl_elbc_read_byte;
 	nand->write_buf = fsl_elbc_write_buf;
 	nand->read_buf = fsl_elbc_read_buf;
-#if defined(CONFIG_MTD_NAND_VERIFY_WRITE)
-	nand->verify_buf = fsl_elbc_verify_buf;
-#endif
 	nand->select_chip = fsl_elbc_select_chip;
 	nand->cmdfunc = fsl_elbc_cmdfunc;
 	nand->waitfunc = fsl_elbc_wait;
diff --git a/drivers/mtd/nand/fsl_ifc_nand.c b/drivers/mtd/nand/fsl_ifc_nand.c
index b283eaea345..7903eebd537 100644
--- a/drivers/mtd/nand/fsl_ifc_nand.c
+++ b/drivers/mtd/nand/fsl_ifc_nand.c
@@ -683,41 +683,6 @@ static void fsl_ifc_read_buf(struct mtd_info *mtd, u8 *buf, int len)
 		       __func__, len, avail);
 }
 
-#if defined(CONFIG_MTD_NAND_VERIFY_WRITE)
-/*
- * Verify buffer against the IFC Controller Data Buffer
- */
-static int fsl_ifc_verify_buf(struct mtd_info *mtd,
-			       const u_char *buf, int len)
-{
-	struct nand_chip *chip = mtd->priv;
-	struct fsl_ifc_mtd *priv = chip->priv;
-	struct fsl_ifc_ctrl *ctrl = priv->ctrl;
-	int i;
-
-	if (len < 0) {
-		printf("%s of %d bytes", __func__, len);
-		return -EINVAL;
-	}
-
-	if ((unsigned int)len > ctrl->read_bytes - ctrl->index) {
-		printf("%s beyond end of buffer "
-		       "(%d requested, %u available)\n",
-		       __func__, len, ctrl->read_bytes - ctrl->index);
-
-		ctrl->index = ctrl->read_bytes;
-		return -EINVAL;
-	}
-
-	for (i = 0; i < len; i++)
-		if (in_8(&ctrl->addr[ctrl->index + i]) != buf[i])
-			break;
-
-	ctrl->index += len;
-	return i == len && ctrl->status == IFC_NAND_EVTER_STAT_OPC ? 0 : -EIO;
-}
-#endif
-
 /* This function is called after Program and Erase Operations to
  * check for success or failure.
  */
@@ -940,9 +905,6 @@ static int fsl_ifc_chip_init(int devnum, u8 *addr)
 
 	nand->write_buf = fsl_ifc_write_buf;
 	nand->read_buf = fsl_ifc_read_buf;
-#if defined(CONFIG_MTD_NAND_VERIFY_WRITE)
-	nand->verify_buf = fsl_ifc_verify_buf;
-#endif
 	nand->select_chip = fsl_ifc_select_chip;
 	nand->cmdfunc = fsl_ifc_cmdfunc;
 	nand->waitfunc = fsl_ifc_wait;
diff --git a/drivers/mtd/nand/fsl_upm.c b/drivers/mtd/nand/fsl_upm.c
index 65ce98ad5e3..5426c321141 100644
--- a/drivers/mtd/nand/fsl_upm.c
+++ b/drivers/mtd/nand/fsl_upm.c
@@ -153,21 +153,6 @@ static void upm_nand_read_buf(struct mtd_info *mtd, u_char *buf, int len)
 		buf[i] = in_8(chip->IO_ADDR_R);
 }
 
-#if defined(CONFIG_MTD_NAND_VERIFY_WRITE)
-static int upm_nand_verify_buf(struct mtd_info *mtd, const u_char *buf, int len)
-{
-	int i;
-	struct nand_chip *chip = mtd->priv;
-
-	for (i = 0; i < len; i++) {
-		if (buf[i] != in_8(chip->IO_ADDR_R))
-			return -EFAULT;
-	}
-
-	return 0;
-}
-#endif
-
 static int nand_dev_ready(struct mtd_info *mtd)
 {
 	struct nand_chip *chip = mtd->priv;
@@ -193,9 +178,6 @@ int fsl_upm_nand_init(struct nand_chip *chip, struct fsl_upm_nand *fun)
 	chip->read_byte = upm_nand_read_byte;
 	chip->read_buf = upm_nand_read_buf;
 	chip->write_buf = upm_nand_write_buf;
-#if defined(CONFIG_MTD_NAND_VERIFY_WRITE)
-	chip->verify_buf = upm_nand_verify_buf;
-#endif
 	if (fun->dev_ready)
 		chip->dev_ready = nand_dev_ready;
 
diff --git a/drivers/mtd/nand/mpc5121_nfc.c b/drivers/mtd/nand/mpc5121_nfc.c
index 7233bfc1279..e621c3665e5 100644
--- a/drivers/mtd/nand/mpc5121_nfc.c
+++ b/drivers/mtd/nand/mpc5121_nfc.c
@@ -459,29 +459,6 @@ static void mpc5121_nfc_write_buf(struct mtd_info *mtd,
 	mpc5121_nfc_buf_copy(mtd, (u_char *) buf, len, 1);
 }
 
-#if defined(CONFIG_MTD_NAND_VERIFY_WRITE)
-/* Compare buffer with NAND flash */
-static int mpc5121_nfc_verify_buf(struct mtd_info *mtd,
-				  const u_char * buf, int len)
-{
-	u_char tmp[256];
-	uint bsize;
-
-	while (len) {
-		bsize = min(len, 256);
-		mpc5121_nfc_read_buf(mtd, tmp, bsize);
-
-		if (memcmp(buf, tmp, bsize))
-			return 1;
-
-		buf += bsize;
-		len -= bsize;
-	}
-
-	return 0;
-}
-#endif
-
 /* Read byte from NFC buffers */
 static u8 mpc5121_nfc_read_byte(struct mtd_info *mtd)
 {
@@ -609,9 +586,6 @@ int board_nand_init(struct nand_chip *chip)
 	chip->read_word = mpc5121_nfc_read_word;
 	chip->read_buf = mpc5121_nfc_read_buf;
 	chip->write_buf = mpc5121_nfc_write_buf;
-#if defined(CONFIG_MTD_NAND_VERIFY_WRITE)
-	chip->verify_buf = mpc5121_nfc_verify_buf;
-#endif
 	chip->select_chip = mpc5121_nfc_select_chip;
 	chip->bbt_options = NAND_BBT_USE_FLASH;
 	chip->ecc.mode = NAND_ECC_SOFT;
diff --git a/drivers/mtd/nand/mxc_nand.c b/drivers/mtd/nand/mxc_nand.c
index 2e5b5b9bf98..f12b07e7adc 100644
--- a/drivers/mtd/nand/mxc_nand.c
+++ b/drivers/mtd/nand/mxc_nand.c
@@ -949,34 +949,6 @@ static void mxc_nand_read_buf(struct mtd_info *mtd, u_char *buf, int len)
 	host->col_addr = col;
 }
 
-#ifdef __UBOOT__
-#if defined(CONFIG_MTD_NAND_VERIFY_WRITE)
-/*
- * Used by the upper layer to verify the data in NAND Flash
- * with the data in the buf.
- */
-static int mxc_nand_verify_buf(struct mtd_info *mtd,
-				const u_char *buf, int len)
-{
-	u_char tmp[256];
-	uint bsize;
-
-	while (len) {
-		bsize = min(len, 256);
-		mxc_nand_read_buf(mtd, tmp, bsize);
-
-		if (memcmp(buf, tmp, bsize))
-			return 1;
-
-		buf += bsize;
-		len -= bsize;
-	}
-
-	return 0;
-}
-#endif
-#endif
-
 /*
  * This function is used by upper layer for select and
  * deselect of the NAND chip
@@ -1207,11 +1179,6 @@ int board_nand_init(struct nand_chip *this)
 	this->read_word = mxc_nand_read_word;
 	this->write_buf = mxc_nand_write_buf;
 	this->read_buf = mxc_nand_read_buf;
-#ifdef __UBOOT__
-#if defined(CONFIG_MTD_NAND_VERIFY_WRITE)
-	this->verify_buf = mxc_nand_verify_buf;
-#endif
-#endif
 
 	host->regs = (struct mxc_nand_regs __iomem *)CONFIG_MXC_NAND_REGS_BASE;
 #ifdef MXC_NFC_V3_2
diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c
index 6db6566e733..c0e381ad2d1 100644
--- a/drivers/mtd/nand/nand_base.c
+++ b/drivers/mtd/nand/nand_base.c
@@ -361,51 +361,6 @@ void nand_read_buf(struct mtd_info *mtd, uint8_t *buf, int len)
 	ioread8_rep(chip->IO_ADDR_R, buf, len);
 }
 
-#ifdef __UBOOT__
-#if defined(CONFIG_MTD_NAND_VERIFY_WRITE)
-/**
- * nand_verify_buf - [DEFAULT] Verify chip data against buffer
- * @mtd: MTD device structure
- * @buf: buffer containing the data to compare
- * @len: number of bytes to compare
- *
- * Default verify function for 8bit buswidth.
- */
-static int nand_verify_buf(struct mtd_info *mtd, const uint8_t *buf, int len)
-{
-	int i;
-	struct nand_chip *chip = mtd->priv;
-
-	for (i = 0; i < len; i++)
-		if (buf[i] != readb(chip->IO_ADDR_R))
-			return -EFAULT;
-	return 0;
-}
-
-/**
- * nand_verify_buf16 - [DEFAULT] Verify chip data against buffer
- * @mtd: MTD device structure
- * @buf: buffer containing the data to compare
- * @len: number of bytes to compare
- *
- * Default verify function for 16bit buswidth.
- */
-static int nand_verify_buf16(struct mtd_info *mtd, const uint8_t *buf, int len)
-{
-	int i;
-	struct nand_chip *chip = mtd->priv;
-	u16 *p = (u16 *) buf;
-	len >>= 1;
-
-	for (i = 0; i < len; i++)
-		if (p[i] != readw(chip->IO_ADDR_R))
-			return -EFAULT;
-
-	return 0;
-}
-#endif
-#endif
-
 /**
  * nand_write_buf16 - [DEFAULT] write buffer to chip
  * @mtd: MTD device structure
@@ -2435,20 +2390,6 @@ static int nand_write_page(struct mtd_info *mtd, struct nand_chip *chip,
 		status = chip->waitfunc(mtd, chip);
 	}
 
-
-#ifdef __UBOOT__
-#if defined(CONFIG_MTD_NAND_VERIFY_WRITE)
-	/* Send command to read back the data */
-	chip->cmdfunc(mtd, NAND_CMD_READ0, 0, page);
-
-	if (chip->verify_buf(mtd, buf, mtd->writesize))
-		return -EIO;
-
-	/* Make sure the next page prog is preceded by a status read */
-	chip->cmdfunc(mtd, NAND_CMD_STATUS, -1, -1);
-#endif
-#endif
-
 	return 0;
 }
 
@@ -3139,12 +3080,6 @@ static void nand_set_defaults(struct nand_chip *chip, int busw)
 		chip->read_buf = busw ? nand_read_buf16 : nand_read_buf;
 	if (!chip->scan_bbt)
 		chip->scan_bbt = nand_default_bbt;
-#ifdef __UBOOT__
-#if defined(CONFIG_MTD_NAND_VERIFY_WRITE)
-	if (!chip->verify_buf)
-		chip->verify_buf = busw ? nand_verify_buf16 : nand_verify_buf;
-#endif
-#endif
 
 	if (!chip->controller) {
 		chip->controller = &chip->hwcontrol;
diff --git a/drivers/mtd/nand/ndfc.c b/drivers/mtd/nand/ndfc.c
index 265959502d8..8a68cb0a67a 100644
--- a/drivers/mtd/nand/ndfc.c
+++ b/drivers/mtd/nand/ndfc.c
@@ -118,21 +118,6 @@ static void ndfc_write_buf(struct mtd_info *mtdinfo, const uint8_t *buf, int len
 		out_be32((u32 *)(base + NDFC_DATA), *p++);
 }
 
-#if defined(CONFIG_MTD_NAND_VERIFY_WRITE)
-static int ndfc_verify_buf(struct mtd_info *mtdinfo, const uint8_t *buf, int len)
-{
-	struct nand_chip *this = mtdinfo->priv;
-	ulong base = (ulong) this->IO_ADDR_W & 0xffffff00;
-	uint32_t *p = (uint32_t *) buf;
-
-	for (; len > 0; len -= 4)
-		if (*p++ != in_be32((u32 *)(base + NDFC_DATA)))
-			return -1;
-
-	return 0;
-}
-#endif
-
 /*
  * Read a byte from the NDFC.
  */
@@ -207,9 +192,6 @@ int board_nand_init(struct nand_chip *nand)
 #endif
 
 	nand->write_buf  = ndfc_write_buf;
-#if defined(CONFIG_MTD_NAND_VERIFY_WRITE)
-	nand->verify_buf = ndfc_verify_buf;
-#endif
 	nand->read_byte = ndfc_read_byte;
 
 	chip++;