[PATCH v4 1/4] mtd: rawnand: nand_bbt: hide suspend/resume hooks while scanning bbt
Boris Brezillon
boris.brezillon at collabora.com
Tue Nov 2 01:43:35 PDT 2021
On Mon, 1 Nov 2021 09:46:23 +0100
Sean Nyekjaer <sean at geanix.com> wrote:
> On Mon, Nov 01, 2021 at 08:38:24AM +0100, Boris Brezillon wrote:
> > On Tue, 26 Oct 2021 07:55:48 +0200
> > Sean Nyekjaer <sean at geanix.com> wrote:
> >
> > > From: Boris Brezillon <boris.brezillon at collabora.com>
> > >
> > > The BBT scan logic use the MTD helpers before the MTD layer had a
> > > chance to initialize the device, and that leads to issues when
> > > accessing the uninitialized suspend lock. Let's temporarily set the
> > > suspend/resume hooks to NULL to skip the lock acquire/release step.
> > >
> > > Fixes: 013e6292aaf5 ("mtd: rawnand: Simplify the locking")
> >
> > I think I already mentioned this Fixes tag should not be there.
> >
>
> No, I didn't recall that, but nevermind :)
>
> Hmm when ('mtd: core: protect access to MTD devices while in suspend')
> is backported we want to live with the use before init of the rwsem?
It's not meant to be backported. You'll need something simpler...
>
> /Sean
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