Re: [PATCH] ndfc driver

[Sean MacLennan <smaclennan@pikatech.com>]

On Tue, 23 Dec 2008 14:26:18 +0200
"Kostas Nakos" <knakos@inaccessnetworks.com> wrote:

> Hello list,
> 
> with respect to Sean's updated patch ( 
> http://lists.infradead.org/pipermail/linux-mtd/2008-December/023932.html 
> ) of the ndfc driver:
> 
> We are using an AMCC PPC440EPx based board which requires the ndfc 
> driver to handle the nand memory. We have encountered 2 problems with 
> this latest patch:
> 
> 1) Kernel oops after of_iomap() of ndfc_probe(). The external nand 
> memory is bound to chip select 0. The respective dts "reg" line was
> 'reg = <0 d0000000 2000>;'. Using chip selects greater than zero do
> not crash the kernel.

I am not a DTS expert, I just use it ;) But are you sure the second
value should be d0000000?

> 2) Byte order wrong in ndfc_calculate_ecc(). ecc_code[0] and
> ecc_code[1] have been exchanged in this version of the patch which
> lead to ecc errors being reported during mounting (and of course, a
> failed mount operation).

Are you using u-boot and, if so, what version? The ecc_code was
changed to match u-boot. We are using a heavily modified 1.3.3.

This may need to be a config option, since we cannot guarantee what
version of u-boot they are running.

Cheers,
   Sean