nand_verify_buf broken ?
Thomas Gleixner
tglx at linutronix.de
Mon Jul 28 11:18:17 EDT 2003
On Monday 28 July 2003 15:30, J.D. Bakker wrote:
> Hi,
>
> Context: drivers/mtd/nand/nand.c in the latest CVS.
>
> static int nand_verify_buf(struct mtd_info *mtd, const u_char *buf, int
> len) {
> int i;
> struct nand_chip *this = mtd->priv;
>
> for (i=0; i<len; i++)
> if (buf[i] != readb(this->IO_ADDR_R))
> return i;
>
> return 0;
> }
>
> This will yield a false positive if the first byte of the buffer is
> corrupted. I didn't dig deep enough to find out who's using this and
> why (or if buf[0] is guaranteed to be correct) so no patch, sorry.
You're right. There must be return -EIO;
It was there before the big changes for DOC support. Must have happened there.
Thanks. Will be fixed.
--
Thomas
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