diff options
author | Huang Shijie <shijie8@gmail.com> | 2012-08-15 06:38:45 +0400 |
---|---|---|
committer | David Woodhouse <David.Woodhouse@intel.com> | 2012-09-29 18:00:46 +0400 |
commit | 657f28f8811c92724db10d18bbbec70d540147d6 (patch) | |
tree | 1d8cb32d57eec27f46a74cad73a1ceff43f5e099 /drivers/mtd/nand/bcm_umi_nand.c | |
parent | 8da28681eb1430fb6715c7aef67001acfbbbcba5 (diff) | |
download | linux-657f28f8811c92724db10d18bbbec70d540147d6.tar.xz |
mtd: kill MTD_NAND_VERIFY_WRITE
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>
Diffstat (limited to 'drivers/mtd/nand/bcm_umi_nand.c')
-rw-r--r-- | drivers/mtd/nand/bcm_umi_nand.c | 22 |
1 files changed, 0 insertions, 22 deletions
diff --git a/drivers/mtd/nand/bcm_umi_nand.c b/drivers/mtd/nand/bcm_umi_nand.c index c855e7cd337b..3fcbcbc7b082 100644 --- a/drivers/mtd/nand/bcm_umi_nand.c +++ b/drivers/mtd/nand/bcm_umi_nand.c @@ -332,27 +332,6 @@ static void bcm_umi_nand_read_buf(struct mtd_info *mtd, u_char * buf, int len) #endif } -static uint8_t readbackbuf[NAND_MAX_PAGESIZE]; -static int bcm_umi_nand_verify_buf(struct mtd_info *mtd, const u_char * buf, - int len) -{ - /* - * Try to readback page with ECC correction. This is necessary - * for MLC parts which may have permanently stuck bits. - */ - struct nand_chip *chip = mtd->priv; - int ret = chip->ecc.read_page(mtd, chip, readbackbuf, 0, 0); - if (ret < 0) - return -EFAULT; - else { - if (memcmp(readbackbuf, buf, len) == 0) - return 0; - - return -EFAULT; - } - return 0; -} - static int __devinit bcm_umi_nand_probe(struct platform_device *pdev) { struct nand_chip *this; @@ -416,7 +395,6 @@ static int __devinit bcm_umi_nand_probe(struct platform_device *pdev) this->write_buf = bcm_umi_nand_write_buf; this->read_buf = bcm_umi_nand_read_buf; - this->verify_buf = bcm_umi_nand_verify_buf; this->cmd_ctrl = bcm_umi_nand_hwcontrol; this->ecc.mode = NAND_ECC_HW; |