[PATCH 2/2] mtd: nand_bbt: Skip bad blocks when searching for the BBT in NAND

[sha at pengutronix.de]

On Wed, Mar 17, 2021 at 05:14:05PM +0000, Stefan Riedmüller wrote:
> Hi Sascha,
> 
> On Wed, 2021-03-17 at 10:41 +0100, Sascha Hauer wrote:
> > Hi Stefan,
> > 
> > On Tue, Mar 16, 2021 at 01:36:26PM +0100, Stefan Riedmueller wrote:
> > > The blocks containing the bad block table can become bad as well. So
> > > make sure to skip any blocks that are marked bad when searching for the
> > > bad block table.
> > 
> > The file is a more or less direct copy from the kernel. Does the problem
> > exist in the kernel as well?
> 
> From my point of view I would say yes. I have just made a small test Issue is
> shown in the kernel as well. It is a very raw case where two BBT blocks need
> to be worn out but on the other hand this fix should not have that much of an
> impact.
> 
> I will send a similar patch to the kernel.

I'd like to delay this one until it is accepted in the kernel. I do not
fully understand the consequences of this patch, but hopefully on the
mtd list there is someone.

Sascha

-- 
Pengutronix e.K.                           |                             |
Steuerwalder Str. 21                       | http://www.pengutronix.de/  |
31137 Hildesheim, Germany                  | Phone: +49-5121-206917-0    |
Amtsgericht Hildesheim, HRA 2686           | Fax:   +49-5121-206917-5555 |