jffs2 errors with 5.4 kernel

[Sander Vanheule]

On Mon, 2020-08-17 at 21:19 +0200, Nick wrote:
> Logs AVM Fritz!Box:
> -
> https://gist.github.com/PolynomialDivision/96bfd98d723f288c617fd96f8ff04c22
> 
> I think many more devices are affected. Keep an eye out for jffs2
> errors.
> 
> We believe that the mx25l12835f (16-pin package) chip is causing the
> problem.

We came to this conclusion after I tested the 8-pin version of this
chip, which doesn't give me any issues on my device (modded TP-Link
EAP245v1) with a 5.4 kernel.

The Fritz!Box 4040 uses the (larger) mx25l25635f, but also the 16-pin
package. This might be a red herring, but at this point we're out of
ideas on what might be the cause.

Best,
Sander