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From:   Geert Uytterhoeven <geert@linux-m68k.org>
Date:   Thu, 12 Mar 2020 13:29:11 +0100
Message-ID: <CAMuHMdV=A-ObmHCsSQgbGCm=QxZ==3vSpFg3OMp-o0Aq=N3w6Q@mail.gmail.com>
Subject: Re: [PATCH] ARM: boot: Fix ATAGs with appended DTB
To:     Marek Szyprowski <m.szyprowski@samsung.com>
Cc:     Russell King - ARM Linux admin <linux@armlinux.org.uk>,
        Geert Uytterhoeven <geert+renesas@glider.be>,
        Nicolas Pitre <nico@fluxnic.net>,
        Arnd Bergmann <arnd@arndb.de>,
        Eric Miao <eric.miao@nvidia.com>,
        =?UTF-8?Q?Uwe_Kleine=2DK=C3=B6nig?= 
        <u.kleine-koenig@pengutronix.de>,
        Chris Brandt <chris.brandt@renesas.com>,
        Linux ARM <linux-arm-kernel@lists.infradead.org>,
        Linux-Renesas <linux-renesas-soc@vger.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
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Hi Marek,

On Thu, Mar 12, 2020 at 1:23 PM Marek Szyprowski
<m.szyprowski@samsung.com> wrote:
> On 26.02.2020 21:48, Geert Uytterhoeven wrote:
> > On Wed, Feb 26, 2020 at 6:57 PM Russell King - ARM Linux admin
> > <linux@armlinux.org.uk> wrote:
> >> On Wed, Feb 26, 2020 at 06:56:06PM +0100, Geert Uytterhoeven wrote:
> >>> On Wed, Feb 26, 2020 at 6:49 PM Russell King - ARM Linux admin
> >>> <linux@armlinux.org.uk> wrote:
> >>>> On Wed, Feb 26, 2020 at 07:35:14AM +0100, Marek Szyprowski wrote:
> >>>>> On 25.02.2020 15:47, Geert Uytterhoeven wrote:
> >>>>>> At early boot, register r8 may contain an ATAGs or DTB pointer.
> >>>>>> When an appended DTB is found, its address is stored in r8, for
> >>>>>> extraction of the RAM base address later.
> >>>>>>
> >>>>>> However, if r8 contained an ATAGs pointer before, that pointer will be
> >>>>>> lost, and the provided ATAGs is no longer folded into the provided DTB.
> >>>>>>
> >>>>>> Fix this by leaving r8 untouched.
> >>>>>>
> >>>>>> Fixes: 137e522593918be2 ("ARM: 8960/1: boot: Obtain start of physical memory from DTB")
> >>>>>> Reported-by: Marek Szyprowski <m.szyprowski@samsung.com>
> >>>>>> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
> >>>> The original commit hasn't been submitted, so it can be fixed before it
> >>>> hits mainline if you want.  Let me know what you want to do.  Thanks.
> >>> Fixing the original is fine for me, of course.
> >>> Thanks!
> >> Please submit a replacement for 8960/1, thanks.
> > Done.
>
> Gentle ping. This fix is still not present in linux-next for over 2 weeks...

According to
https://www.arm.linux.org.uk/developer/patches/viewpatch.php?id=8963
the fixed version was applied less than one hour ago.

It's now part of arm/for-next.

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds