[U-Boot] PATCH: bugfix for nand erase failure with bad blocks

[Wolfgang Denk]

Dear "Michele De Candia (VT)",

In message <4A37F7BF.2090101 at valueteam.com> you wrote:
>
> >> this patch fixes a bug for 'nand erase' command: when bad blocks are 
> >> present into erasing area, they were skipped but the erased size was 
> >> updated anyway.
> >
> > And what exactly is the bug in this behaviour?
> >   
> I think that 'erase' should have the same behaviour of 'write' and 
> 'read' commands: skip bad blocks until read/write size is reached. If 
> you write a script that erases and then writes a NAND area and bad 
> blocks are not skipped while erasing (as U-Boot actually does), the 
> following 'write'  is successfully done but ECC checks fail on next read 
> on the same area.

I see - thanks for the explanation.

Hm... actually I think the write should fail in such a case...

Scott, what do you think?

Best regards,

Wolfgang Denk

-- 
DENX Software Engineering GmbH,     MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de
Only in our dreams we are free.  The rest of the time we need  wages.
                                    - Terry Pratchett, _Wyrd Sisters_