* Ivaylo Dimitrov [off-list ref] [160221 10:14]:

Hi,

On 11.02.2016 02:12, Tony Lindgren wrote:

quoted

Also.. There's a chance somebody has created a onenand file system
with recent mainline kernels that did the reset and disabled ECC.
So with Ivaylo's patch fixing that, those may not mount properly
any longer. Most likely people just keep their maemo rootfs there
though with the MMC being available.

I guess this is possible, but what worries me more is that the longer the
patch is not pushed, the higher the chance somebody to end-up with broken
rootfs. Wouldn't it be better to push it, thus preventing that happening?

Will apply today into omap-for-v4.5/fixes with Aaro's ack. Note that
Aaro found also two other error causing issues with the onenand
driver, so it seems the onenand driver has been broken for years in
the mainline kernel..

BTW the differences for N9/50 come from ONENAND_SYS_CFG1_HF bit and
ONENAND_SYS_CFG1_BRL_6 vs ONENAND_SYS_CFG1_BRL_4. Both are changed (later in
the code) anyway, so I guess it is safe to reset them to default values.

Yes I think we're better off having things fully configured by the
kernel in the long run.

Or, maybe the correct fix is to issue RESET command to onenand controller
after GPMC reset? RESET command is supposed to put all the bits to their
default values.

Something like that could be added if needed.

Regards,

Tony