[MTD] Introduce writesize

At least two flashes exists that have the concept of a minimum write unit,
similar to NAND pages, but no other NAND characteristics.  Therefore, rename
the minimum write unit to "writesize" for all flashes, including NAND.

Signed-off-by: Joern Engel <joern@wh.fh-wedel.de>

17 files changed, 117 insertions, 114 deletions

diff --git a/drivers/mtd/chips/cfi_cmdset_0001.c b/drivers/mtd/chips/cfi_cmdset_0001.c
index d0d5e521b564..35c3689bc5c1 100644
--- a/drivers/mtd/chips/cfi_cmdset_0001.c
+++ b/drivers/mtd/chips/cfi_cmdset_0001.c
@@ -545,12 +545,12 @@ static int cfi_intelext_partition_fixup(struct mtd_info *mtd,
                 if (extp->MinorVersion >= '4') {
                         struct cfi_intelext_programming_regioninfo *prinfo;
                         prinfo = (struct cfi_intelext_programming_regioninfo *)&extp->extra[offs];
-                        MTD_PROGREGION_SIZE(mtd) = cfi->interleave << prinfo->ProgRegShift;
+                        mtd->writesize = cfi->interleave << prinfo->ProgRegShift;
                         MTD_PROGREGION_CTRLMODE_VALID(mtd) = cfi->interleave * prinfo->ControlValid;
                         MTD_PROGREGION_CTRLMODE_INVALID(mtd) = cfi->interleave * prinfo->ControlInvalid;
                         mtd->flags |= MTD_PROGRAM_REGIONS;
                         printk(KERN_DEBUG "%s: program region size/ctrl_valid/ctrl_inval = %d/%d/%d\n",
-                               map->name, MTD_PROGREGION_SIZE(mtd),
+                               map->name, mtd->writesize,
                                MTD_PROGREGION_CTRLMODE_VALID(mtd),
                                MTD_PROGREGION_CTRLMODE_INVALID(mtd));
                 }
diff --git a/drivers/mtd/devices/doc2000.c b/drivers/mtd/devices/doc2000.c
index 40cc20f6d164..423a34f4638c 100644
--- a/drivers/mtd/devices/doc2000.c
+++ b/drivers/mtd/devices/doc2000.c
@@ -579,7 +579,7 @@ void DoC2k_init(struct mtd_info *mtd)
         mtd->ecctype = MTD_ECC_RS_DiskOnChip;
         mtd->size = 0;
         mtd->erasesize = 0;
-        mtd->oobblock = 512;
+        mtd->writesize = 512;
         mtd->oobsize = 16;
         mtd->owner = THIS_MODULE;
         mtd->erase = doc_erase;
diff --git a/drivers/mtd/devices/doc2001.c b/drivers/mtd/devices/doc2001.c
index 1670eb8b9755..e6eaef28a2b0 100644
--- a/drivers/mtd/devices/doc2001.c
+++ b/drivers/mtd/devices/doc2001.c
@@ -361,7 +361,7 @@ void DoCMil_init(struct mtd_info *mtd)
         /* FIXME: erase size is not always 8KiB */
         mtd->erasesize = 0x2000;
 
-        mtd->oobblock = 512;
+        mtd->writesize = 512;
         mtd->oobsize = 16;
         mtd->owner = THIS_MODULE;
         mtd->erase = doc_erase;
diff --git a/drivers/mtd/devices/doc2001plus.c b/drivers/mtd/devices/doc2001plus.c
index 0dc5d108f7b5..8422c5e92d27 100644
--- a/drivers/mtd/devices/doc2001plus.c
+++ b/drivers/mtd/devices/doc2001plus.c
@@ -483,7 +483,7 @@ void DoCMilPlus_init(struct mtd_info *mtd)
         mtd->size = 0;
 
         mtd->erasesize = 0;
-        mtd->oobblock = 512;
+        mtd->writesize = 512;
         mtd->oobsize = 16;
         mtd->owner = THIS_MODULE;
         mtd->erase = doc_erase;
diff --git a/drivers/mtd/mtdconcat.c b/drivers/mtd/mtdconcat.c
index 3c61a980c56c..a5e8373349a5 100644
--- a/drivers/mtd/mtdconcat.c
+++ b/drivers/mtd/mtdconcat.c
@@ -278,9 +278,9 @@ concat_writev_ecc(struct mtd_info *mtd, const struct kvec *vecs,
                 return -EINVAL;
 
         /* Check alignment */
-        if (mtd->oobblock > 1) {
+        if (mtd->writesize > 1) {
                 loff_t __to = to;
-                if (do_div(__to, mtd->oobblock) || (total_len % mtd->oobblock))
+                if (do_div(__to, mtd->writesize) || (total_len % mtd->writesize))
                         return -EINVAL;
         }
 
@@ -334,7 +334,7 @@ concat_writev_ecc(struct mtd_info *mtd, const struct kvec *vecs,
                 *retlen += retsize;
                 total_len -= wsize;
                 if (concat->mtd.type == MTD_NANDFLASH && eccbuf)
-                        eccbuf += mtd->oobavail * (wsize / mtd->oobblock);
+                        eccbuf += mtd->oobavail * (wsize / mtd->writesize);
 
                 if (total_len == 0)
                         break;
@@ -833,7 +833,7 @@ struct mtd_info *mtd_concat_create(struct mtd_info *subdev[],	/* subdevices to c
         concat->mtd.flags = subdev[0]->flags;
         concat->mtd.size = subdev[0]->size;
         concat->mtd.erasesize = subdev[0]->erasesize;
-        concat->mtd.oobblock = subdev[0]->oobblock;
+        concat->mtd.writesize = subdev[0]->writesize;
         concat->mtd.oobsize = subdev[0]->oobsize;
         concat->mtd.ecctype = subdev[0]->ecctype;
         concat->mtd.eccsize = subdev[0]->eccsize;
@@ -881,7 +881,7 @@ struct mtd_info *mtd_concat_create(struct mtd_info *subdev[],	/* subdevices to c
                                     subdev[i]->flags & MTD_WRITEABLE;
                 }
                 concat->mtd.size += subdev[i]->size;
-                if (concat->mtd.oobblock   !=  subdev[i]->oobblock ||
+                if (concat->mtd.writesize   !=  subdev[i]->writesize ||
                     concat->mtd.oobsize    !=  subdev[i]->oobsize ||
                     concat->mtd.ecctype    !=  subdev[i]->ecctype ||
                     concat->mtd.eccsize    !=  subdev[i]->eccsize ||
diff --git a/drivers/mtd/mtdpart.c b/drivers/mtd/mtdpart.c
index 29ed5abe70c4..082662f90481 100644
--- a/drivers/mtd/mtdpart.c
+++ b/drivers/mtd/mtdpart.c
@@ -398,7 +398,7 @@ int add_mtd_partitions(struct mtd_info *master,
                 slave->mtd.type = master->type;
                 slave->mtd.flags = master->flags & ~parts[i].mask_flags;
                 slave->mtd.size = parts[i].size;
-                slave->mtd.oobblock = master->oobblock;
+                slave->mtd.writesize = master->writesize;
                 slave->mtd.oobsize = master->oobsize;
                 slave->mtd.oobavail = master->oobavail;
                 slave->mtd.ecctype = master->ecctype;
diff --git a/drivers/mtd/nand/au1550nd.c b/drivers/mtd/nand/au1550nd.c
index d9a0143e1d3a..4253b9309789 100644
--- a/drivers/mtd/nand/au1550nd.c
+++ b/drivers/mtd/nand/au1550nd.c
@@ -356,9 +356,9 @@ static void au1550_command(struct mtd_info *mtd, unsigned command, int column, i
         if (command == NAND_CMD_SEQIN) {
                 int readcmd;
 
-                if (column >= mtd->oobblock) {
+                if (column >= mtd->writesize) {
                         /* OOB area */
-                        column -= mtd->oobblock;
+                        column -= mtd->writesize;
                         readcmd = NAND_CMD_READOOB;
                 } else if (column < 256) {
                         /* First 256 bytes --> READ0 */
diff --git a/drivers/mtd/nand/diskonchip.c b/drivers/mtd/nand/diskonchip.c
index a2391c66a63f..d160930276d6 100644
--- a/drivers/mtd/nand/diskonchip.c
+++ b/drivers/mtd/nand/diskonchip.c
@@ -761,9 +761,9 @@ static void doc2001plus_command(struct mtd_info *mtd, unsigned command, int colu
         if (command == NAND_CMD_SEQIN) {
                 int readcmd;
 
-                if (column >= mtd->oobblock) {
+                if (column >= mtd->writesize) {
                         /* OOB area */
-                        column -= mtd->oobblock;
+                        column -= mtd->writesize;
                         readcmd = NAND_CMD_READOOB;
                 } else if (column < 256) {
                         /* First 256 bytes --> READ0 */
@@ -1093,8 +1093,8 @@ static int __init find_media_headers(struct mtd_info *mtd, u_char *buf, const ch
         size_t retlen;
 
         for (offs = 0; offs < mtd->size; offs += mtd->erasesize) {
-                ret = mtd->read(mtd, offs, mtd->oobblock, &retlen, buf);
-                if (retlen != mtd->oobblock)
+                ret = mtd->read(mtd, offs, mtd->writesize, &retlen, buf);
+                if (retlen != mtd->writesize)
                         continue;
                 if (ret) {
                         printk(KERN_WARNING "ECC error scanning DOC at 0x%x\n", offs);
@@ -1118,8 +1118,8 @@ static int __init find_media_headers(struct mtd_info *mtd, u_char *buf, const ch
         /* Only one mediaheader was found.  We want buf to contain a
            mediaheader on return, so we'll have to re-read the one we found. */
         offs = doc->mh0_page << this->page_shift;
-        ret = mtd->read(mtd, offs, mtd->oobblock, &retlen, buf);
-        if (retlen != mtd->oobblock) {
+        ret = mtd->read(mtd, offs, mtd->writesize, &retlen, buf);
+        if (retlen != mtd->writesize) {
                 /* Insanity.  Give up. */
                 printk(KERN_ERR "Read DiskOnChip Media Header once, but can't reread it???\n");
                 return 0;
@@ -1139,7 +1139,7 @@ static inline int __init nftl_partscan(struct mtd_info *mtd, struct mtd_partitio
         unsigned blocks, maxblocks;
         int offs, numheaders;
 
-        buf = kmalloc(mtd->oobblock, GFP_KERNEL);
+        buf = kmalloc(mtd->writesize, GFP_KERNEL);
         if (!buf) {
                 printk(KERN_ERR "DiskOnChip mediaheader kmalloc failed!\n");
                 return 0;
@@ -1247,7 +1247,7 @@ static inline int __init inftl_partscan(struct mtd_info *mtd, struct mtd_partiti
         if (inftl_bbt_write)
                 end -= (INFTL_BBT_RESERVED_BLOCKS << this->phys_erase_shift);
 
-        buf = kmalloc(mtd->oobblock, GFP_KERNEL);
+        buf = kmalloc(mtd->writesize, GFP_KERNEL);
         if (!buf) {
                 printk(KERN_ERR "DiskOnChip mediaheader kmalloc failed!\n");
                 return 0;
diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c
index 08dffb7a9389..055f6608a2ec 100644
--- a/drivers/mtd/nand/nand_base.c
+++ b/drivers/mtd/nand/nand_base.c
@@ -560,9 +560,9 @@ static void nand_command(struct mtd_info *mtd, unsigned command, int column, int
         if (command == NAND_CMD_SEQIN) {
                 int readcmd;
 
-                if (column >= mtd->oobblock) {
+                if (column >= mtd->writesize) {
                         /* OOB area */
-                        column -= mtd->oobblock;
+                        column -= mtd->writesize;
                         readcmd = NAND_CMD_READOOB;
                 } else if (column < 256) {
                         /* First 256 bytes --> READ0 */
@@ -658,7 +658,7 @@ static void nand_command_lp(struct mtd_info *mtd, unsigned command, int column,
 
         /* Emulate NAND_CMD_READOOB */
         if (command == NAND_CMD_READOOB) {
-                column += mtd->oobblock;
+                column += mtd->writesize;
                 command = NAND_CMD_READ0;
         }
 
@@ -889,7 +889,7 @@ static int nand_write_page(struct mtd_info *mtd, struct nand_chip *this, int pag
                 /* No ecc, write all */
         case NAND_ECC_NONE:
                 printk(KERN_WARNING "Writing data without ECC to NAND-FLASH is not recommended\n");
-                this->write_buf(mtd, this->data_poi, mtd->oobblock);
+                this->write_buf(mtd, this->data_poi, mtd->writesize);
                 break;
 
                 /* Software ecc 3/256, write all */
@@ -900,7 +900,7 @@ static int nand_write_page(struct mtd_info *mtd, struct nand_chip *this, int pag
                                 oob_buf[oob_config[eccidx]] = ecc_code[i];
                         datidx += this->eccsize;
                 }
-                this->write_buf(mtd, this->data_poi, mtd->oobblock);
+                this->write_buf(mtd, this->data_poi, mtd->writesize);
                 break;
         default:
                 eccbytes = this->eccbytes;
@@ -1161,9 +1161,9 @@ int nand_do_read_ecc(struct mtd_info *mtd, loff_t from, size_t len,
         page = realpage & this->pagemask;
 
         /* Get raw starting column */
-        col = from & (mtd->oobblock - 1);
+        col = from & (mtd->writesize - 1);
 
-        end = mtd->oobblock;
+        end = mtd->writesize;
         ecc = this->eccsize;
         eccbytes = this->eccbytes;
 
@@ -1321,7 +1321,7 @@ int nand_do_read_ecc(struct mtd_info *mtd, loff_t from, size_t len,
                                 buf[read++] = data_poi[j];
                         this->pagebuf = realpage;
                 } else
-                        read += mtd->oobblock;
+                        read += mtd->writesize;
 
                 /* Apply delay or wait for ready/busy pin
                  * Do this before the AUTOINCR check, so no problems
@@ -1479,7 +1479,7 @@ int nand_read_raw(struct mtd_info *mtd, uint8_t *buf, loff_t from, size_t len, s
         int chip = (int)(from >> this->chip_shift);
         int sndcmd = 1;
         int cnt = 0;
-        int pagesize = mtd->oobblock + mtd->oobsize;
+        int pagesize = mtd->writesize + mtd->oobsize;
         int blockcheck = (1 << (this->phys_erase_shift - this->page_shift)) - 1;
 
         /* Do not allow reads past end of device */
@@ -1581,7 +1581,7 @@ static u_char *nand_prepare_oobbuf(struct mtd_info *mtd, u_char *fsbuf, struct n
         return this->oob_buf;
 }
 
-#define NOTALIGNED(x) (x & (mtd->oobblock-1)) != 0
+#define NOTALIGNED(x) (x & (mtd->writesize-1)) != 0
 
 /**
  * nand_write - [MTD Interface] compability function for nand_write_ecc
@@ -1694,7 +1694,7 @@ static int nand_write_ecc(struct mtd_info *mtd, loff_t to, size_t len,
                 /* Next oob page */
                 oob += mtd->oobsize;
                 /* Update written bytes count */
-                written += mtd->oobblock;
+                written += mtd->writesize;
                 if (written == len)
                         goto cmp;
 
@@ -1805,7 +1805,7 @@ static int nand_write_oob(struct mtd_info *mtd, loff_t to, size_t len, size_t *r
 
         if (NAND_MUST_PAD(this)) {
                 /* Write out desired data */
-                this->cmdfunc(mtd, NAND_CMD_SEQIN, mtd->oobblock, page & this->pagemask);
+                this->cmdfunc(mtd, NAND_CMD_SEQIN, mtd->writesize, page & this->pagemask);
                 /* prepad 0xff for partial programming */
                 this->write_buf(mtd, ffchars, column);
                 /* write data */
@@ -1814,7 +1814,7 @@ static int nand_write_oob(struct mtd_info *mtd, loff_t to, size_t len, size_t *r
                 this->write_buf(mtd, ffchars, mtd->oobsize - (len + column));
         } else {
                 /* Write out desired data */
-                this->cmdfunc(mtd, NAND_CMD_SEQIN, mtd->oobblock + column, page & this->pagemask);
+                this->cmdfunc(mtd, NAND_CMD_SEQIN, mtd->writesize + column, page & this->pagemask);
                 /* write data */
                 this->write_buf(mtd, buf, len);
         }
@@ -1947,7 +1947,7 @@ static int nand_writev_ecc(struct mtd_info *mtd, const struct kvec *vecs, unsign
                 /* If the given tuple is >= pagesize then
                  * write it out from the iov
                  */
-                if ((vecs->iov_len - len) >= mtd->oobblock) {
+                if ((vecs->iov_len - len) >= mtd->writesize) {
                         /* Calc number of pages we can write
                          * out of this iov in one go */
                         numpages = (vecs->iov_len - len) >> this->page_shift;
@@ -1967,8 +1967,8 @@ static int nand_writev_ecc(struct mtd_info *mtd, const struct kvec *vecs, unsign
                                                       &oobbuf[oob], oobsel, i != numpages);
                                 if (ret)
                                         goto out;
-                                this->data_poi += mtd->oobblock;
-                                len += mtd->oobblock;
+                                this->data_poi += mtd->writesize;
+                                len += mtd->writesize;
                                 oob += mtd->oobsize;
                                 page++;
                         }
@@ -1983,7 +1983,7 @@ static int nand_writev_ecc(struct mtd_info *mtd, const struct kvec *vecs, unsign
                          * tuple until we have a full page to write
                          */
                         int cnt = 0;
-                        while (cnt < mtd->oobblock) {
+                        while (cnt < mtd->writesize) {
                                 if (vecs->iov_base != NULL && vecs->iov_len)
                                         this->data_buf[cnt++] = ((u_char *) vecs->iov_base)[len++];
                                 /* Check, if we have to switch to the next tuple */
@@ -2009,7 +2009,7 @@ static int nand_writev_ecc(struct mtd_info *mtd, const struct kvec *vecs, unsign
                 if (ret)
                         goto out;
 
-                written += mtd->oobblock * numpages;
+                written += mtd->writesize * numpages;
                 /* All done ? */
                 if (!count)
                         break;
@@ -2411,10 +2411,10 @@ int nand_scan(struct mtd_info *mtd, int maxchips)
                         /* The 4th id byte is the important one */
                         extid = this->read_byte(mtd);
                         /* Calc pagesize */
-                        mtd->oobblock = 1024 << (extid & 0x3);
+                        mtd->writesize = 1024 << (extid & 0x3);
                         extid >>= 2;
                         /* Calc oobsize */
-                        mtd->oobsize = (8 << (extid & 0x01)) * (mtd->oobblock >> 9);
+                        mtd->oobsize = (8 << (extid & 0x01)) * (mtd->writesize >> 9);
                         extid >>= 2;
                         /* Calc blocksize. Blocksize is multiples of 64KiB */
                         mtd->erasesize = (64 * 1024) << (extid & 0x03);
@@ -2426,8 +2426,8 @@ int nand_scan(struct mtd_info *mtd, int maxchips)
                         /* Old devices have this data hardcoded in the
                          * device id table */
                         mtd->erasesize = nand_flash_ids[i].erasesize;
-                        mtd->oobblock = nand_flash_ids[i].pagesize;
-                        mtd->oobsize = mtd->oobblock / 32;
+                        mtd->writesize = nand_flash_ids[i].pagesize;
+                        mtd->oobsize = mtd->writesize / 32;
                         busw = nand_flash_ids[i].options & NAND_BUSWIDTH_16;
                 }
 
@@ -2451,12 +2451,12 @@ int nand_scan(struct mtd_info *mtd, int maxchips)
                 }
 
                 /* Calculate the address shift from the page size */
-                this->page_shift = ffs(mtd->oobblock) - 1;
+                this->page_shift = ffs(mtd->writesize) - 1;
                 this->bbt_erase_shift = this->phys_erase_shift = ffs(mtd->erasesize) - 1;
                 this->chip_shift = ffs(this->chipsize) - 1;
 
                 /* Set the bad block position */
-                this->badblockpos = mtd->oobblock > 512 ? NAND_LARGE_BADBLOCK_POS : NAND_SMALL_BADBLOCK_POS;
+                this->badblockpos = mtd->writesize > 512 ? NAND_LARGE_BADBLOCK_POS : NAND_SMALL_BADBLOCK_POS;
 
                 /* Get chip options, preserve non chip based options */
                 this->options &= ~NAND_CHIPOPTIONS_MSK;
@@ -2476,7 +2476,7 @@ int nand_scan(struct mtd_info *mtd, int maxchips)
                         this->erase_cmd = single_erase_cmd;
 
                 /* Do not replace user supplied command function ! */
-                if (mtd->oobblock > 512 && this->cmdfunc == nand_command)
+                if (mtd->writesize > 512 && this->cmdfunc == nand_command)
                         this->cmdfunc = nand_command_lp;
 
                 printk(KERN_INFO "NAND device: Manufacturer ID:"
@@ -2519,7 +2519,7 @@ int nand_scan(struct mtd_info *mtd, int maxchips)
 
         if (!this->data_buf) {
                 size_t len;
-                len = mtd->oobblock + mtd->oobsize;
+                len = mtd->writesize + mtd->oobsize;
                 this->data_buf = kmalloc(len, GFP_KERNEL);
                 if (!this->data_buf) {
                         if (this->options & NAND_OOBBUF_ALLOC)
@@ -2575,9 +2575,9 @@ int nand_scan(struct mtd_info *mtd, int maxchips)
 
         switch (this->eccmode) {
         case NAND_ECC_HW12_2048:
-                if (mtd->oobblock < 2048) {
+                if (mtd->writesize < 2048) {
                         printk(KERN_WARNING "2048 byte HW ECC not possible on %d byte page size, fallback to SW ECC\n",
-                               mtd->oobblock);
+                               mtd->writesize);
                         this->eccmode = NAND_ECC_SOFT;
                         this->calculate_ecc = nand_calculate_ecc;
                         this->correct_data = nand_correct_data;
@@ -2588,7 +2588,7 @@ int nand_scan(struct mtd_info *mtd, int maxchips)
         case NAND_ECC_HW3_512:
         case NAND_ECC_HW6_512:
         case NAND_ECC_HW8_512:
-                if (mtd->oobblock == 256) {
+                if (mtd->writesize == 256) {
                         printk(KERN_WARNING "512 byte HW ECC not possible on 256 Byte pagesize, fallback to SW ECC \n");
                         this->eccmode = NAND_ECC_SOFT;
                         this->calculate_ecc = nand_calculate_ecc;
@@ -2638,16 +2638,16 @@ int nand_scan(struct mtd_info *mtd, int maxchips)
         /* Set the number of read / write steps for one page to ensure ECC generation */
         switch (this->eccmode) {
         case NAND_ECC_HW12_2048:
-                this->eccsteps = mtd->oobblock / 2048;
+                this->eccsteps = mtd->writesize / 2048;
                 break;
         case NAND_ECC_HW3_512:
         case NAND_ECC_HW6_512:
         case NAND_ECC_HW8_512:
-                this->eccsteps = mtd->oobblock / 512;
+                this->eccsteps = mtd->writesize / 512;
                 break;
         case NAND_ECC_HW3_256:
         case NAND_ECC_SOFT:
-                this->eccsteps = mtd->oobblock / 256;
+                this->eccsteps = mtd->writesize / 256;
                 break;
 
         case NAND_ECC_NONE:
diff --git a/drivers/mtd/nand/nand_bbt.c b/drivers/mtd/nand/nand_bbt.c
index 9adc6d62332a..fbccb2a25186 100644
--- a/drivers/mtd/nand/nand_bbt.c
+++ b/drivers/mtd/nand/nand_bbt.c
@@ -247,15 +247,15 @@ static int read_abs_bbts(struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_des
 
         /* Read the primary version, if available */
         if (td->options & NAND_BBT_VERSION) {
-                nand_read_raw(mtd, buf, td->pages[0] << this->page_shift, mtd->oobblock, mtd->oobsize);
-                td->version[0] = buf[mtd->oobblock + td->veroffs];
+                nand_read_raw(mtd, buf, td->pages[0] << this->page_shift, mtd->writesize, mtd->oobsize);
+                td->version[0] = buf[mtd->writesize + td->veroffs];
                 printk(KERN_DEBUG "Bad block table at page %d, version 0x%02X\n", td->pages[0], td->version[0]);
         }
 
         /* Read the mirror version, if available */
         if (md && (md->options & NAND_BBT_VERSION)) {
-                nand_read_raw(mtd, buf, md->pages[0] << this->page_shift, mtd->oobblock, mtd->oobsize);
-                md->version[0] = buf[mtd->oobblock + md->veroffs];
+                nand_read_raw(mtd, buf, md->pages[0] << this->page_shift, mtd->writesize, mtd->oobsize);
+                md->version[0] = buf[mtd->writesize + md->veroffs];
                 printk(KERN_DEBUG "Bad block table at page %d, version 0x%02X\n", md->pages[0], md->version[0]);
         }
 
@@ -298,8 +298,8 @@ static int create_bbt(struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_descr
                 readlen = bd->len;
         } else {
                 /* Full page content should be read */
-                scanlen = mtd->oobblock + mtd->oobsize;
-                readlen = len * mtd->oobblock;
+                scanlen = mtd->writesize + mtd->oobsize;
+                readlen = len * mtd->writesize;
                 ooblen = len * mtd->oobsize;
         }
 
@@ -334,7 +334,7 @@ static int create_bbt(struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_descr
 
                                 /* Read the full oob until read_oob is fixed to
                                  * handle single byte reads for 16 bit buswidth */
-                                ret = mtd->read_oob(mtd, from + j * mtd->oobblock, mtd->oobsize, &retlen, buf);
+                                ret = mtd->read_oob(mtd, from + j * mtd->writesize, mtd->oobsize, &retlen, buf);
                                 if (ret)
                                         return ret;
 
@@ -345,7 +345,7 @@ static int create_bbt(struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_descr
                                         break;
                                 }
                         } else {
-                                if (check_pattern(&buf[j * scanlen], scanlen, mtd->oobblock, bd)) {
+                                if (check_pattern(&buf[j * scanlen], scanlen, mtd->writesize, bd)) {
                                         this->bbt[i >> 3] |= 0x03 << (i & 0x6);
                                         printk(KERN_WARNING "Bad eraseblock %d at 0x%08x\n",
                                                i >> 1, (unsigned int)from);
@@ -381,7 +381,7 @@ static int search_bbt(struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_descr
         struct nand_chip *this = mtd->priv;
         int i, chips;
         int bits, startblock, block, dir;
-        int scanlen = mtd->oobblock + mtd->oobsize;
+        int scanlen = mtd->writesize + mtd->oobsize;
         int bbtblocks;
 
         /* Search direction top -> down ? */
@@ -414,11 +414,11 @@ static int search_bbt(struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_descr
                 for (block = 0; block < td->maxblocks; block++) {
                         int actblock = startblock + dir * block;
                         /* Read first page */
-                        nand_read_raw(mtd, buf, actblock << this->bbt_erase_shift, mtd->oobblock, mtd->oobsize);
-                        if (!check_pattern(buf, scanlen, mtd->oobblock, td)) {
+                        nand_read_raw(mtd, buf, actblock << this->bbt_erase_shift, mtd->writesize, mtd->oobsize);
+                        if (!check_pattern(buf, scanlen, mtd->writesize, td)) {
                                 td->pages[i] = actblock << (this->bbt_erase_shift - this->page_shift);
                                 if (td->options & NAND_BBT_VERSION) {
-                                        td->version[i] = buf[mtd->oobblock + td->veroffs];
+                                        td->version[i] = buf[mtd->writesize + td->veroffs];
                                 }
                                 break;
                         }
@@ -586,7 +586,7 @@ static int write_bbt(struct mtd_info *mtd, uint8_t *buf,
                         /* Calc length */
                         len = (size_t) (numblocks >> sft);
                         /* Make it page aligned ! */
-                        len = (len + (mtd->oobblock - 1)) & ~(mtd->oobblock - 1);
+                        len = (len + (mtd->writesize - 1)) & ~(mtd->writesize - 1);
                         /* Preset the buffer with 0xff */
                         memset(buf, 0xff, len + (len >> this->page_shift) * mtd->oobsize);
                         offs = 0;
@@ -1063,13 +1063,13 @@ int nand_default_bbt(struct mtd_info *mtd)
                         this->bbt_md = &bbt_mirror_descr;
                 }
                 if (!this->badblock_pattern) {
-                        this->badblock_pattern = (mtd->oobblock > 512) ? &largepage_flashbased : &smallpage_flashbased;
+                        this->badblock_pattern = (mtd->writesize > 512) ? &largepage_flashbased : &smallpage_flashbased;
                 }
         } else {
                 this->bbt_td = NULL;
                 this->bbt_md = NULL;
                 if (!this->badblock_pattern) {
-                        this->badblock_pattern = (mtd->oobblock > 512) ?
+                        this->badblock_pattern = (mtd->writesize > 512) ?
                             &largepage_memorybased : &smallpage_memorybased;
                 }
         }
diff --git a/drivers/mtd/nand/nandsim.c b/drivers/mtd/nand/nandsim.c
index 6903f5b903c6..8674f1e9d3c6 100644
--- a/drivers/mtd/nand/nandsim.c
+++ b/drivers/mtd/nand/nandsim.c
@@ -369,7 +369,7 @@ init_nandsim(struct mtd_info *mtd)
         /* Initialize the NAND flash parameters */
         ns->busw = chip->options & NAND_BUSWIDTH_16 ? 16 : 8;
         ns->geom.totsz    = mtd->size;
-        ns->geom.pgsz     = mtd->oobblock;
+        ns->geom.pgsz     = mtd->writesize;
         ns->geom.oobsz    = mtd->oobsize;
         ns->geom.secsz    = mtd->erasesize;
         ns->geom.pgszoob  = ns->geom.pgsz + ns->geom.oobsz;
diff --git a/drivers/mtd/nand/rtc_from4.c b/drivers/mtd/nand/rtc_from4.c
index bc9d849fbd5d..64ccf4c9613f 100644
--- a/drivers/mtd/nand/rtc_from4.c
+++ b/drivers/mtd/nand/rtc_from4.c
@@ -487,7 +487,7 @@ static int rtc_from4_errstat(struct mtd_info *mtd, struct nand_chip *this, int s
                 if (!(rtn & ERR_STAT_ECC_AVAILABLE)) {
                         er_stat |= 1 << 1;      /* err_ecc_not_avail */
                 } else {
-                        len = mtd->oobblock;
+                        len = mtd->writesize;
                         buf = kmalloc(len, GFP_KERNEL);
                         if (!buf) {
                                 printk(KERN_ERR "rtc_from4_errstat: Out of memory!\n");
diff --git a/drivers/mtd/onenand/onenand_base.c b/drivers/mtd/onenand/onenand_base.c
index fe5b48997275..198bb8562d93 100644
--- a/drivers/mtd/onenand/onenand_base.c
+++ b/drivers/mtd/onenand/onenand_base.c
@@ -354,7 +354,7 @@ static inline int onenand_bufferram_offset(struct mtd_info *mtd, int area)
 
         if (ONENAND_CURRENT_BUFFERRAM(this)) {
                 if (area == ONENAND_DATARAM)
-                        return mtd->oobblock;
+                        return mtd->writesize;
                 if (area == ONENAND_SPARERAM)
                         return mtd->oobsize;
         }
@@ -632,14 +632,14 @@ static int onenand_read_ecc(struct mtd_info *mtd, loff_t from, size_t len,
         /* TODO handling oob */
 
         while (read < len) {
-                thislen = min_t(int, mtd->oobblock, len - read);
+                thislen = min_t(int, mtd->writesize, len - read);
 
-                column = from & (mtd->oobblock - 1);
-                if (column + thislen > mtd->oobblock)
-                        thislen = mtd->oobblock - column;
+                column = from & (mtd->writesize - 1);
+                if (column + thislen > mtd->writesize)
+                        thislen = mtd->writesize - column;
 
                 if (!onenand_check_bufferram(mtd, from)) {
-                        this->command(mtd, ONENAND_CMD_READ, from, mtd->oobblock);
+                        this->command(mtd, ONENAND_CMD_READ, from, mtd->writesize);
 
                         ret = this->wait(mtd, FL_READING);
                         /* First copy data and check return value for ECC handling */
@@ -752,7 +752,7 @@ static int onenand_read_oob(struct mtd_info *mtd, loff_t from, size_t len,
                 /* Read more? */
                 if (read < len) {
                         /* Page size */
-                        from += mtd->oobblock;
+                        from += mtd->writesize;
                         column = 0;
                 }
         }
@@ -809,7 +809,7 @@ static int onenand_verify_page(struct mtd_info *mtd, u_char *buf, loff_t addr)
         void __iomem *dataram0, *dataram1;
         int ret = 0;
 
-        this->command(mtd, ONENAND_CMD_READ, addr, mtd->oobblock);
+        this->command(mtd, ONENAND_CMD_READ, addr, mtd->writesize);
 
         ret = this->wait(mtd, FL_READING);
         if (ret)
@@ -819,9 +819,9 @@ static int onenand_verify_page(struct mtd_info *mtd, u_char *buf, loff_t addr)
 
         /* Check, if the two dataram areas are same */
         dataram0 = this->base + ONENAND_DATARAM;
-        dataram1 = dataram0 + mtd->oobblock;
+        dataram1 = dataram0 + mtd->writesize;
 
-        if (memcmp(dataram0, dataram1, mtd->oobblock))
+        if (memcmp(dataram0, dataram1, mtd->writesize))
                 return -EBADMSG;
 
         return 0;
@@ -831,7 +831,7 @@ static int onenand_verify_page(struct mtd_info *mtd, u_char *buf, loff_t addr)
 #define onenand_verify_oob(...)         (0)
 #endif
 
-#define NOTALIGNED(x)   ((x & (mtd->oobblock - 1)) != 0)
+#define NOTALIGNED(x)   ((x & (mtd->writesize - 1)) != 0)
 
 /**
  * onenand_write_ecc - [MTD Interface] OneNAND write with ECC
@@ -875,14 +875,14 @@ static int onenand_write_ecc(struct mtd_info *mtd, loff_t to, size_t len,
 
         /* Loop until all data write */
         while (written < len) {
-                int thislen = min_t(int, mtd->oobblock, len - written);
+                int thislen = min_t(int, mtd->writesize, len - written);
 
-                this->command(mtd, ONENAND_CMD_BUFFERRAM, to, mtd->oobblock);
+                this->command(mtd, ONENAND_CMD_BUFFERRAM, to, mtd->writesize);
 
                 this->write_bufferram(mtd, ONENAND_DATARAM, buf, 0, thislen);
                 this->write_bufferram(mtd, ONENAND_SPARERAM, ffchars, 0, mtd->oobsize);
 
-                this->command(mtd, ONENAND_CMD_PROG, to, mtd->oobblock);
+                this->command(mtd, ONENAND_CMD_PROG, to, mtd->writesize);
 
                 onenand_update_bufferram(mtd, to, 1);
 
@@ -1070,10 +1070,10 @@ static int onenand_writev_ecc(struct mtd_info *mtd, const struct kvec *vecs,
                  * If the given tuple is >= pagesize then
                  * write it out from the iov
                  */
-                if ((vecs->iov_len - len) >= mtd->oobblock) {
+                if ((vecs->iov_len - len) >= mtd->writesize) {
                         pbuf = vecs->iov_base + len;
 
-                        len += mtd->oobblock;
+                        len += mtd->writesize;
 
                         /* Check, if we have to switch to the next tuple */
                         if (len >= (int) vecs->iov_len) {
@@ -1083,8 +1083,8 @@ static int onenand_writev_ecc(struct mtd_info *mtd, const struct kvec *vecs,
                         }
                 } else {
                         int cnt = 0, thislen;
-                        while (cnt < mtd->oobblock) {
-                                thislen = min_t(int, mtd->oobblock - cnt, vecs->iov_len - len);
+                        while (cnt < mtd->writesize) {
+                                thislen = min_t(int, mtd->writesize - cnt, vecs->iov_len - len);
                                 memcpy(this->page_buf + cnt, vecs->iov_base + len, thislen);
                                 cnt += thislen;
                                 len += thislen;
@@ -1098,12 +1098,12 @@ static int onenand_writev_ecc(struct mtd_info *mtd, const struct kvec *vecs,
                         }
                 }
 
-                this->command(mtd, ONENAND_CMD_BUFFERRAM, to, mtd->oobblock);
+                this->command(mtd, ONENAND_CMD_BUFFERRAM, to, mtd->writesize);
 
-                this->write_bufferram(mtd, ONENAND_DATARAM, pbuf, 0, mtd->oobblock);
+                this->write_bufferram(mtd, ONENAND_DATARAM, pbuf, 0, mtd->writesize);
                 this->write_bufferram(mtd, ONENAND_SPARERAM, ffchars, 0, mtd->oobsize);
 
-                this->command(mtd, ONENAND_CMD_PROG, to, mtd->oobblock);
+                this->command(mtd, ONENAND_CMD_PROG, to, mtd->writesize);
 
                 onenand_update_bufferram(mtd, to, 1);
 
@@ -1121,9 +1121,9 @@ static int onenand_writev_ecc(struct mtd_info *mtd, const struct kvec *vecs,
                         goto out;
                 }
 
-                written += mtd->oobblock;
+                written += mtd->writesize;
 
-                to += mtd->oobblock;
+                to += mtd->writesize;
         }
 
 out:
@@ -1467,11 +1467,11 @@ static int do_otp_write(struct mtd_info *mtd, loff_t from, size_t len,
         int ret;
 
         /* Force buffer page aligned */
-        if (len < mtd->oobblock) {
+        if (len < mtd->writesize) {
                 memcpy(this->page_buf, buf, len);
-                memset(this->page_buf + len, 0xff, mtd->oobblock - len);
+                memset(this->page_buf + len, 0xff, mtd->writesize - len);
                 pbuf = this->page_buf;
-                len = mtd->oobblock;
+                len = mtd->writesize;
         }
 
         /* Enter OTP access mode */
@@ -1546,12 +1546,12 @@ static int onenand_otp_walk(struct mtd_info *mtd, loff_t from, size_t len,
                 otp_pages = 10;
 
         if (mode == MTD_OTP_FACTORY) {
-                from += mtd->oobblock * otp_pages;
+                from += mtd->writesize * otp_pages;
                 otp_pages = 64 - otp_pages;
         }
 
         /* Check User/Factory boundary */
-        if (((mtd->oobblock * otp_pages) - (from + len)) < 0)
+        if (((mtd->writesize * otp_pages) - (from + len)) < 0)
                 return 0;
 
         while (len > 0 && otp_pages > 0) {
@@ -1564,10 +1564,10 @@ static int onenand_otp_walk(struct mtd_info *mtd, loff_t from, size_t len,
 
                         otpinfo = (struct otp_info *) buf;
                         otpinfo->start = from;
-                        otpinfo->length = mtd->oobblock;
+                        otpinfo->length = mtd->writesize;
                         otpinfo->locked = 0;
 
-                        from += mtd->oobblock;
+                        from += mtd->writesize;
                         buf += sizeof(struct otp_info);
                         *retlen += sizeof(struct otp_info);
                 } else {
@@ -1811,15 +1811,15 @@ static int onenand_probe(struct mtd_info *mtd)
 
         /* OneNAND page size & block size */
         /* The data buffer size is equal to page size */
-        mtd->oobblock = this->read_word(this->base + ONENAND_REG_DATA_BUFFER_SIZE);
-        mtd->oobsize = mtd->oobblock >> 5;
+        mtd->writesize = this->read_word(this->base + ONENAND_REG_DATA_BUFFER_SIZE);
+        mtd->oobsize = mtd->writesize >> 5;
         /* Pagers per block is always 64 in OneNAND */
-        mtd->erasesize = mtd->oobblock << 6;
+        mtd->erasesize = mtd->writesize << 6;
 
         this->erase_shift = ffs(mtd->erasesize) - 1;
-        this->page_shift = ffs(mtd->oobblock) - 1;
+        this->page_shift = ffs(mtd->writesize) - 1;
         this->ppb_shift = (this->erase_shift - this->page_shift);
-        this->page_mask = (mtd->erasesize / mtd->oobblock) - 1;
+        this->page_mask = (mtd->erasesize / mtd->writesize) - 1;
 
         /* REVIST: Multichip handling */
 
@@ -1909,7 +1909,7 @@ int onenand_scan(struct mtd_info *mtd, int maxchips)
         /* Allocate buffers, if necessary */
         if (!this->page_buf) {
                 size_t len;
-                len = mtd->oobblock + mtd->oobsize;
+                len = mtd->writesize + mtd->oobsize;
                 this->page_buf = kmalloc(len, GFP_KERNEL);
                 if (!this->page_buf) {
                         printk(KERN_ERR "onenand_scan(): Can't allocate page_buf\n");
diff --git a/drivers/mtd/onenand/onenand_bbt.c b/drivers/mtd/onenand/onenand_bbt.c
index 4510d3361eaa..aafd7c2f7802 100644
--- a/drivers/mtd/onenand/onenand_bbt.c
+++ b/drivers/mtd/onenand/onenand_bbt.c
@@ -87,13 +87,13 @@ static int create_bbt(struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_descr
 
                         /* No need to read pages fully,
                          * just read required OOB bytes */
-                        ret = mtd->read_oob(mtd, from + j * mtd->oobblock + bd->offs,
+                        ret = mtd->read_oob(mtd, from + j * mtd->writesize + bd->offs,
                                                 readlen, &retlen, &buf[0]);
 
                         if (ret)
                                 return ret;
 
-                        if (check_short_pattern(&buf[j * scanlen], scanlen, mtd->oobblock, bd)) {
+                        if (check_short_pattern(&buf[j * scanlen], scanlen, mtd->writesize, bd)) {
                                 bbm->bbt[i >> 3] |= 0x03 << (i & 0x6);
                                 printk(KERN_WARNING "Bad eraseblock %d at 0x%08x\n",
                                         i >> 1, (unsigned int) from);
diff --git a/fs/jffs2/wbuf.c b/fs/jffs2/wbuf.c
index 62f685faeba8..355226d8ce29 100644
--- a/fs/jffs2/wbuf.c
+++ b/fs/jffs2/wbuf.c
@@ -1173,7 +1173,7 @@ int jffs2_nand_flash_setup(struct jffs2_sb_info *c)
 
         /* Initialise write buffer */
         init_rwsem(&c->wbuf_sem);
-        c->wbuf_pagesize = c->mtd->oobblock;
+        c->wbuf_pagesize = c->mtd->writesize;
         c->wbuf_ofs = 0xFFFFFFFF;
 
         c->wbuf = kmalloc(c->wbuf_pagesize, GFP_KERNEL);
@@ -1266,11 +1266,11 @@ void jffs2_nor_ecc_flash_cleanup(struct jffs2_sb_info *c) {
 
 int jffs2_nor_wbuf_flash_setup(struct jffs2_sb_info *c) {
         /* Cleanmarker currently occupies a whole programming region */
-        c->cleanmarker_size = MTD_PROGREGION_SIZE(c->mtd);
+        c->cleanmarker_size = c->mtd->writesize;
 
         /* Initialize write buffer */
         init_rwsem(&c->wbuf_sem);
-        c->wbuf_pagesize = MTD_PROGREGION_SIZE(c->mtd);
+        c->wbuf_pagesize = c->mtd->writesize;
         c->wbuf_ofs = 0xFFFFFFFF;
 
         c->wbuf = kmalloc(c->wbuf_pagesize, GFP_KERNEL);
diff --git a/include/linux/mtd/mtd.h b/include/linux/mtd/mtd.h
index 73620ef83364..d48c7492392b 100644
--- a/include/linux/mtd/mtd.h
+++ b/include/linux/mtd/mtd.h
@@ -66,8 +66,12 @@ struct mtd_info {
          * information below if they desire
          */
         u_int32_t erasesize;
+        /* Smallest availlable size for writing to the device.  For NAND,
+         * this is the page size, for some NOR chips, the size of ECC
+         * covered blocks.
+         */
+        u_int32_t writesize;
 
-        u_int32_t oobblock;  // Size of OOB blocks (e.g. 512)
         u_int32_t oobsize;   // Amount of OOB data per block (e.g. 16)
         u_int32_t ecctype;
         u_int32_t eccsize;
@@ -79,7 +83,6 @@ struct mtd_info {
          * MTD_PROGRAM_REGIONS flag is set.
          * (Maybe we should have an union for those?)
          */
-#define MTD_PROGREGION_SIZE(mtd)  (mtd)->oobblock
 #define MTD_PROGREGION_CTRLMODE_VALID(mtd)  (mtd)->oobsize
 #define MTD_PROGREGION_CTRLMODE_INVALID(mtd)  (mtd)->ecctype
 
diff --git a/include/mtd/mtd-abi.h b/include/mtd/mtd-abi.h
index e4d61f33d5bb..520a3b483100 100644
--- a/include/mtd/mtd-abi.h
+++ b/include/mtd/mtd-abi.h
@@ -63,7 +63,7 @@ struct mtd_info_user {
         uint32_t flags;
         uint32_t size;   // Total size of the MTD
         uint32_t erasesize;
-        uint32_t oobblock;  // Size of OOB blocks (e.g. 512)
+        uint32_t writesize;
         uint32_t oobsize;   // Amount of OOB data per block (e.g. 16)
         uint32_t ecctype;
         uint32_t eccsize;