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Date:   Sat, 2 May 2020 20:08:06 +0200
From:   Miquel Raynal <>
To:     Kamal Dasu <>
Cc:     Vignesh Raghavendra <>,
        Kamal Dasu <>,
        Richard Weinberger <>,
        linux-kernel <>,
        Marek Vasut <>,
        bcm-kernel-feedback-list <>,
        linux-mtd <>,
        Brian Norris <>,
        David Woodhouse <>
Subject: Re: [PATCH] mtd: set mtd partition panic write flag

Hi Kamal,

Miquel Raynal <> wrote on Thu, 9 Jan 2020
18:28:07 +0100:

> Hi Kamal,
> Kamal Dasu <> 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?

I'm pinging you here as well, as I think you raise a real issue, and we
agreed on a solution, which can now be easily setup with the above
change which has been applied and support for functions like:

	static inline struct mtd_info *mtd_get_master(struct mtd_info *mtd)
	static inline u64 mtd_get_master_ofs(struct mtd_info *mtd, u64 ofs)
	static inline bool mtd_is_partition(const struct mtd_info *mtd)
	static inline bool mtd_has_partitions(const struct mtd_info *mtd)


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