[MTD] Remove nand writev support

NAND writev(_ecc) support is not longer necessary. Remove it.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

1 files changed, 0 insertions, 188 deletions

diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c
index 7785350..9aaeb3a 100644
--- a/drivers/mtd/nand/nand_base.c
+++ b/drivers/mtd/nand/nand_base.c
@@ -151,11 +151,6 @@ static int nand_write_ecc(struct mtd_info *mtd, loff_t to, size_t len,
 			  struct nand_oobinfo *oobsel);
 static int nand_write_oob(struct mtd_info *mtd, loff_t to, size_t len,
 			  size_t *retlen, const uint8_t *buf);
-static int nand_writev(struct mtd_info *mtd, const struct kvec *vecs,
-		       unsigned long count, loff_t to, size_t *retlen);
-static int nand_writev_ecc(struct mtd_info *mtd, const struct kvec *vecs,
-			   unsigned long count, loff_t to, size_t *retlen,
-			   uint8_t *eccbuf, struct nand_oobinfo *oobsel);
 static int nand_erase(struct mtd_info *mtd, struct erase_info *instr);
 static void nand_sync(struct mtd_info *mtd);
 
@@ -1857,187 +1852,6 @@ static int nand_write_oob(struct mtd_info *mtd, loff_t to, size_t len, size_t *r
 }
 
 /**
- * nand_writev - [MTD Interface] compabilty function for nand_writev_ecc
- * @mtd:	MTD device structure
- * @vecs:	the iovectors to write
- * @count:	number of vectors
- * @to:		offset to write to
- * @retlen:	pointer to variable to store the number of written bytes
- *
- * NAND write with kvec. This just calls the ecc function
- */
-static int nand_writev(struct mtd_info *mtd, const struct kvec *vecs, unsigned long count,
-		       loff_t to, size_t *retlen)
-{
-	return (nand_writev_ecc(mtd, vecs, count, to, retlen, NULL, NULL));
-}
-
-/**
- * nand_writev_ecc - [MTD Interface] write with iovec with ecc
- * @mtd:	MTD device structure
- * @vecs:	the iovectors to write
- * @count:	number of vectors
- * @to:		offset to write to
- * @retlen:	pointer to variable to store the number of written bytes
- * @eccbuf:	filesystem supplied oob data buffer
- * @oobsel:	oob selection structure
- *
- * NAND write with iovec with ecc
- */
-static int nand_writev_ecc(struct mtd_info *mtd, const struct kvec *vecs, unsigned long count,
-			   loff_t to, size_t *retlen, uint8_t *eccbuf, struct nand_oobinfo *oobsel)
-{
-	int i, page, len, total_len, ret = -EIO, written = 0, chipnr;
-	int oob, numpages, autoplace = 0, startpage;
-	struct nand_chip *this = mtd->priv;
-	int ppblock = (1 << (this->phys_erase_shift - this->page_shift));
-	uint8_t *oobbuf, *bufstart;
-
-	/* Preset written len for early exit */
-	*retlen = 0;
-
-	/* Calculate total length of data */
-	total_len = 0;
-	for (i = 0; i < count; i++)
-		total_len += (int)vecs[i].iov_len;
-
-	DEBUG(MTD_DEBUG_LEVEL3, "nand_writev: to = 0x%08x, len = %i, count = %ld\n", (unsigned int)to, (unsigned int)total_len, count);
-
-	/* Do not allow write past end of page */
-	if ((to + total_len) > mtd->size) {
-		DEBUG(MTD_DEBUG_LEVEL0, "nand_writev: Attempted write past end of device\n");
-		return -EINVAL;
-	}
-
-	/* reject writes, which are not page aligned */
-	if (NOTALIGNED(to) || NOTALIGNED(total_len)) {
-		printk(KERN_NOTICE "nand_write_ecc: Attempt to write not page aligned data\n");
-		return -EINVAL;
-	}
-
-	/* Grab the lock and see if the device is available */
-	nand_get_device(this, mtd, FL_WRITING);
-
-	/* Get the current chip-nr */
-	chipnr = (int)(to >> this->chip_shift);
-	/* Select the NAND device */
-	this->select_chip(mtd, chipnr);
-
-	/* Check, if it is write protected */
-	if (nand_check_wp(mtd))
-		goto out;
-
-	/* if oobsel is NULL, use chip defaults */
-	if (oobsel == NULL)
-		oobsel = &mtd->oobinfo;
-
-	/* Autoplace of oob data ? Use the default placement scheme */
-	if (oobsel->useecc == MTD_NANDECC_AUTOPLACE) {
-		oobsel = this->autooob;
-		autoplace = 1;
-	}
-	if (oobsel->useecc == MTD_NANDECC_AUTOPL_USR)
-		autoplace = 1;
-
-	/* Setup start page */
-	page = (int)(to >> this->page_shift);
-	/* Invalidate the page cache, if we write to the cached page */
-	if (page <= this->pagebuf && this->pagebuf < ((to + total_len) >> this->page_shift))
-		this->pagebuf = -1;
-
-	startpage = page & this->pagemask;
-
-	/* Loop until all kvec' data has been written */
-	len = 0;
-	while (count) {
-		/* If the given tuple is >= pagesize then
-		 * write it out from the iov
-		 */
-		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;
-			/* Do not cross block boundaries */
-			numpages = min(ppblock - (startpage & (ppblock - 1)), numpages);
-			oobbuf = nand_prepare_oobbuf(mtd, NULL, oobsel, autoplace, numpages);
-			bufstart = (uint8_t *) vecs->iov_base;
-			bufstart += len;
-			this->data_poi = bufstart;
-			oob = 0;
-			for (i = 1; i <= numpages; i++) {
-				/* Write one page. If this is the last page to write
-				 * then use the real pageprogram command, else select
-				 * cached programming if supported by the chip.
-				 */
-				ret = nand_write_page(mtd, this, page & this->pagemask,
-						      &oobbuf[oob], oobsel, i != numpages);
-				if (ret)
-					goto out;
-				this->data_poi += mtd->writesize;
-				len += mtd->writesize;
-				oob += mtd->oobsize;
-				page++;
-			}
-			/* Check, if we have to switch to the next tuple */
-			if (len >= (int)vecs->iov_len) {
-				vecs++;
-				len = 0;
-				count--;
-			}
-		} else {
-			/* We must use the internal buffer, read data out of each
-			 * tuple until we have a full page to write
-			 */
-			int cnt = 0;
-			while (cnt < mtd->writesize) {
-				if (vecs->iov_base != NULL && vecs->iov_len)
-					this->data_buf[cnt++] = ((uint8_t *) vecs->iov_base)[len++];
-				/* Check, if we have to switch to the next tuple */
-				if (len >= (int)vecs->iov_len) {
-					vecs++;
-					len = 0;
-					count--;
-				}
-			}
-			this->pagebuf = page;
-			this->data_poi = this->data_buf;
-			bufstart = this->data_poi;
-			numpages = 1;
-			oobbuf = nand_prepare_oobbuf(mtd, NULL, oobsel, autoplace, numpages);
-			ret = nand_write_page(mtd, this, page & this->pagemask, oobbuf, oobsel, 0);
-			if (ret)
-				goto out;
-			page++;
-		}
-
-		this->data_poi = bufstart;
-		ret = nand_verify_pages(mtd, this, startpage, numpages, oobbuf, oobsel, chipnr, 0);
-		if (ret)
-			goto out;
-
-		written += mtd->writesize * numpages;
-		/* All done ? */
-		if (!count)
-			break;
-
-		startpage = page & this->pagemask;
-		/* Check, if we cross a chip boundary */
-		if (!startpage) {
-			chipnr++;
-			this->select_chip(mtd, -1);
-			this->select_chip(mtd, chipnr);
-		}
-	}
-	ret = 0;
- out:
-	/* Deselect and wake up anyone waiting on the device */
-	nand_release_device(mtd);
-
-	*retlen = written;
-	return ret;
-}
-
-/**
  * single_erease_cmd - [GENERIC] NAND standard block erase command function
  * @mtd:	MTD device structure
  * @page:	the page address of the block which will be erased
@@ -2718,8 +2532,6 @@ int nand_scan(struct mtd_info *mtd, int maxchips)
 	mtd->read_oob = nand_read_oob;
 	mtd->write_oob = nand_write_oob;
 	mtd->readv = NULL;
-	mtd->writev = nand_writev;
-	mtd->writev_ecc = nand_writev_ecc;
 	mtd->sync = nand_sync;
 	mtd->lock = NULL;
 	mtd->unlock = NULL;