Re: [PATCH] OneNAND MTD support

Artem B. Bityuckiy
2005-07-04T13:30:50Z

On Mon, 2005-07-04 at 10:19 +0900, Kyungmin Park wrote:
> Hi
>
> We are happy to release OneNAND MTD to open source community.
Hello,

+config MTD_ONENAND_VERIFY_WRITE
+ bool "Verify OneNAND page writes"
+ depends on MTD_ONENAND
+ help
+ This adds an extra check when data is written to the flash.
The
+ OneNAND flash device internally checks only bits transitioning
+ from 1 to 0. There is a rare possibility that even though the
+ device thinks the write was successful, a bit could have been
+ flipped accidentaly due to device wear or something else.

Why general MTD CONFIG_MTD_NAND_VERIFY_WRITE config option and -
>verify_buf driver method (see nand_base.c) is not enough and you need
your own verify option?