linux-kernel - Re: [PATCH v5 3/5] mtd: handle partitioning on devices with 0 erasesize

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Message-ID: <20170708011419.GE55942@google.com>
Date:   Fri, 7 Jul 2017 18:14:19 -0700
From:   Brian Norris <computersforpeace@...il.com>
To:     Chris Packham <Chris.Packham@...iedtelesis.co.nz>
Cc:     "linux-mtd@...ts.infradead.org" <linux-mtd@...ts.infradead.org>,
        "andrew@...n.ch" <andrew@...n.ch>,
        "dwmw2@...radead.org" <dwmw2@...radead.org>,
        "boris.brezillon@...e-electrons.com" 
        <boris.brezillon@...e-electrons.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Marek Vasut <marek.vasut@...il.com>,
        Richard Weinberger <richard@....at>,
        Cyrille Pitchen <cyrille.pitchen@...ev4u.fr>,
        David Oberhollenzer <david.oberhollenzer@...ma-star.at>
Subject: Re: [PATCH v5 3/5] mtd: handle partitioning on devices with 0
 erasesize

On Tue, Jul 04, 2017 at 03:22:52AM +0000, Chris Packham wrote:
> I had someone mention to me in passing that mtdinfo was failing for them 
> (crashing with some floating point error). I'm wondering if we've 
> created a divide-by-zero problem by reporting 0 erase size in /proc/mtd. 
> I don't have any other info and right now I don't have access to the 
> system I had with the mchp23lcv1024 sram.

Wouldn't be that surprising. mtdinfo is actually developed under the
"ubi-utils" directory of mtd-utils, and UBI wouldn't know what to do
with and SRAM like that.

Brian