linux-kernel - Re: 5.2-rc1 on droid4: spi crash

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Date:   Mon, 27 May 2019 06:31:19 -0700
From:   Tony Lindgren <tony@...mide.com>
To:     Noralf Trønnes <notro@...nnes.org>
Cc:     Sebastian Reichel <sre@...nel.org>, Pavel Machek <pavel@....cz>,
        kernel list <linux-kernel@...r.kernel.org>,
        linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
        linux-omap@...r.kernel.org, nekit1000@...il.com, mpartap@....net,
        merlijn@...zup.org,
        Noralf Trønnes <noralf@...nnes.org>,
        Mark Brown <broonie@...nel.org>, linux-spi@...r.kernel.org
Subject: Re: 5.2-rc1 on droid4: spi crash

* Noralf Trønnes <notro@...nnes.org> [190527 13:16]:
> 
> 
> Den 2019-05-27 07:53, skrev Tony Lindgren:
> > Hi,
> > 
> > * Sebastian Reichel <sre@...nel.org> [190523 09:33]:
> > > Hi,
> > > 
> > > On Thu, May 23, 2019 at 11:09:26AM +0200, Pavel Machek wrote:
> > > > This was greeting me overnight... I don't yet know how reproducible it
> > > > is, it happened once so far.
> > > 
> > > Please pipe the stacktrace into ./scripts/decode_stacktrace.sh
> > > to get a readable stacktrace, otherwise this is pretty much useless.
> > > FWIW the only SPI device in the Droid 4 is the PMIC.
> > 
> > I've seen this too, and looks like reverting commit c9ba7a16d0f1
> > ("spi: Release spi_res after finalizing message") fixes it based
> > several days of testing.
> > 
> > Noralf and Mark, any ideas what needs to be fixed here?
> 
> Mark has a revert in his for-5.2 branch:
> spi: Fix Raspberry Pi breakage
> https://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi.git/commit/?h=for-5.2&id=0ed56252c9567351344cb7b5cff6140e1bcec943

Oh OK good to hear.

> I don't know when or if he has sent a pull request.
> Sorry about the breakage.

No worries, thanks for the update.

Regards,

Tony