Re: [PATCH] mtd/ubi: fix initialization order of ubi subsystems

[Mikhail Kshevetskiy <mikhail.kshevetskiy@gmail.com>]

On Fri, 21 Jun 2019 20:47:50 +0200 (CEST)
Richard Weinberger <richard@nod.at> wrote:

> ----- Ursprüngliche Mail -----
> >> Can you please share a little more about the problem you are facing?
> >> Also produce_free_peb() should not get called at this point.
> >> So before we flip the order of initialization I'd like to understand the
> >> problem better.
> > 
> > We faced a cycle rebooting in u-boot during ubi initialization. The problem
> > appears approximately once per week on a random router from our test farm.
> > We never trigger this problem in linux (only in u-boot).
> > 
> > From the other side ubi code in u-boot is almost the same as ubi code in
> > linux kernel (it backported from linux periodically), so it make sense to
> > fix it in linux as well to help with future porting.
> > 
> > PS we send the same patch to u-boot.
> 
> In u-boot the story is a little different because it has no concept of
> threads and executes work immediately.
> 
> Do you see this on a recent u-boot?
> With this commit in u-boot this problem should not happen:
> f82290afc847 ("mtd: ubi: Fix worker handling")

no we use 2016.07 based bootloader. I'll look on it. Thanks.

> 
> Thanks,
> //richard

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