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mtd: kill MTD_NAND_VERIFY_WRITE

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Just as Artem suggested:

"Both UBI and JFFS2 are able to read verify what they wrote already.
There are also MTD tests which do this verification. So I think there
is no reason to keep this in the NAND layer, let alone wasting RAM in
the driver to support this feature. Besides, it does not work for sub-pages
and many drivers have it broken. It hurts more than it provides benefits."

So kill MTD_NAND_VERIFY_WRITE entirely.

Signed-off-by: Huang Shijie <shijie8@gmail.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
This commit is contained in:
Huang Shijie
2012-08-14 22:38:45 -04:00
committed by David Woodhouse
parent 8da28681eb
commit 657f28f881
26 changed files with 0 additions and 550 deletions
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9
drivers/mtd/nand/mxc_nand.c
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@@ -746,14 +746,6 @@ static void mxc_nand_read_buf(struct mtd_info *mtd, u_char *buf, int len)
host->buf_start += n;
}
/* 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)
{
return -EFAULT;
}
/* This function is used by upper layer for select and
* deselect of the NAND chip */
static void mxc_nand_select_chip_v1_v3(struct mtd_info *mtd, int chip)
@@ -1406,7 +1398,6 @@ static int __init mxcnd_probe(struct platform_device *pdev)
this->read_word = mxc_nand_read_word;
this->write_buf = mxc_nand_write_buf;
this->read_buf = mxc_nand_read_buf;
this->verify_buf = mxc_nand_verify_buf;
host->clk = devm_clk_get(&pdev->dev, "nfc");
if (IS_ERR(host->clk))