From: Miquel Raynal <miquel.raynal@bootlin.com>
To: "Rafał Miłecki" <rafal@milecki.pl>
Cc: "Richard Weinberger" <richard@nod.at>,
"Rafał Miłecki" <zajec5@gmail.com>,
linux-mtd@lists.infradead.org,
"Vignesh Raghavendra" <vigneshr@ti.com>,
"Boris Brezillon" <bbrezillon@kernel.org>
Subject: Re: [PATCH] mtd: fix calculating partition end address
Date: Tue, 24 Mar 2020 23:11:40 +0100 [thread overview]
Message-ID: <20200324231140.44aecf7a@xps13> (raw)
In-Reply-To: <9fe546f30130cf3569cd139d559d9c44@milecki.pl>
Hi Rafał,
Rafał Miłecki <rafal@milecki.pl> wrote on Tue, 24 Mar 2020 23:06:05
+0100:
> Hey,
>
> On 2020-03-24 22:58, Miquel Raynal wrote:
> > Rafał Miłecki <rafal@milecki.pl> wrote on Mon, 09 Mar 2020 15:19:10
> > +0100:
> >
> >> On 2020-03-09 15:04, Miquel Raynal wrote:
> >> > Rafał Miłecki <zajec5@gmail.com> wrote on Mon, 9 Mar 2020 08:44:45
> >> > +0100:
> >> >
> >> >> From: Rafał Miłecki <rafal@milecki.pl>
> >> >> >> This fixes check for partitions that don't start at beginning of their
> >> >> parents. Missing partition's offset in formula could result in forcing
> >> >> read-only incorrectly.
> >> >> >> Fixes: 6750f61a13a0 ("mtd: improve calculating partition boundaries >> when checking for alignment")
> >> >> Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
> >> >> ---
> >> >> drivers/mtd/mtdpart.c | 2 +-
> >> >> 1 file changed, 1 insertion(+), 1 deletion(-)
> >> >> >> diff --git a/drivers/mtd/mtdpart.c b/drivers/mtd/mtdpart.c
> >> >> index 7328c066c5ba..c683b432cc5e 100644
> >> >> --- a/drivers/mtd/mtdpart.c
> >> >> +++ b/drivers/mtd/mtdpart.c
> >> >> @@ -524,7 +524,7 @@ static struct mtd_part *allocate_partition(struct >> mtd_info *parent,
> >> >> part->name);
> >> >> }
> >> >> >> - tmp = part_absolute_offset(parent) + slave->mtd.size;
> >> >> + tmp = part_absolute_offset(parent) + slave->offset + >> slave->mtd.size;
> >> >
> >> > I think you are doing the change at the wrong place, if you want to
> >> > check where the partition *starts* you should do it a few lines above.
> >> > But I think the check should be here as well, probably.
> >> >> The check where the partition *starts* is OK and I don't mean to >> change
> >> it. The bug is about calculating absolute *end* address of partition.
> >> >> >> > Anyway, I just applied on my local tree a patch rewriting a bit the
> >> > partitioning scheme, could you please rebase on top of today's
> >> > mtd/next and resend this patch updated?
> >> >
> >> > Here is the change that I've done at this place:
> >> > - tmp = part_absolute_offset(parent) + slave->mtd.size;
> >> > + tmp = mtd_get_master_ofs(child, 0) + child->size;
> >> >> I'll give it a try.
> >
> > I would like to apply your fix this week, do you think you can rebase
> > and resend soon?
>
> It's not needed anymore as you fixed this bug in your commit reworking
> partitions.
Great!
Thanks for the info
Miquèl
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prev parent reply other threads:[~2020-03-24 22:11 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-03-09 7:44 [PATCH] mtd: fix calculating partition end address Rafał Miłecki
2020-03-09 14:04 ` Miquel Raynal
2020-03-09 14:19 ` Rafał Miłecki
2020-03-09 14:22 ` Miquel Raynal
2020-03-09 15:08 ` Rafał Miłecki
2020-03-09 15:22 ` Miquel Raynal
2020-05-02 18:04 ` Miquel Raynal
2020-05-02 19:36 ` Rafał Miłecki
2020-05-02 19:53 ` Miquel Raynal
2020-03-24 21:58 ` Miquel Raynal
2020-03-24 22:06 ` Rafał Miłecki
2020-03-24 22:11 ` Miquel Raynal [this message]
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