linux-kernel - Re: [PATCH] mtd: set mtd partition panic write flag

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Date:   Thu, 9 Jan 2020 18:28:07 +0100
From:   Miquel Raynal <miquel.raynal@...tlin.com>
To:     Kamal Dasu <kamal.dasu@...adcom.com>
Cc:     Richard Weinberger <richard@....at>,
        Kamal Dasu <kdasu.kdev@...il.com>,
        linux-mtd <linux-mtd@...ts.infradead.org>,
        bcm-kernel-feedback-list <bcm-kernel-feedback-list@...adcom.com>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        David Woodhouse <dwmw2@...radead.org>,
        Brian Norris <computersforpeace@...il.com>,
        Marek Vasut <marek.vasut@...il.com>,
        Vignesh Raghavendra <vigneshr@...com>
Subject: Re: [PATCH] mtd: set mtd partition panic write flag

Hi Kamal,

Kamal Dasu <kamal.dasu@...adcom.com> wrote on Thu, 9 Jan 2020 10:25:59
-0500:

> Miquel,
> 
> Yes the issue is still open. I was trying to understand the suggestion
> and did not get a reply on the question I had
> 
> Richard wrote :
> "So the right fix would be setting the parent's oops_panic_write in
> mtd_panic_write().
> Then we don't have to touch mtdpart.c"
> 
> How do I get access to the parts parent in the core ?. Maybe I am
> missing something.

I think the solution is to set the oops_panic_write of the root parent, instead of updating the flag of the mtd device itself (which is maybe a partition).

Would this help?

https://www.spinics.net/lists/linux-mtd/msg10454.html

Thanks,
Miquèl