linux-kernel - Re: [PATCH v3 00/14] mips: Prepare MIPS-arch code for Baikal-T1 SoC support

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Date:   Thu, 21 May 2020 09:30:08 +0200
From:   Arnd Bergmann <arnd@...db.de>
To:     Thomas Bogendoerfer <tsbogend@...ha.franken.de>
Cc:     Serge Semin <Sergey.Semin@...kalelectronics.ru>,
        Serge Semin <fancer.lancer@...il.com>,
        Alexey Malahov <Alexey.Malahov@...kalelectronics.ru>,
        Maxim Kaurkin <Maxim.Kaurkin@...kalelectronics.ru>,
        Pavel Parkhomenko <Pavel.Parkhomenko@...kalelectronics.ru>,
        Ramil Zaripov <Ramil.Zaripov@...kalelectronics.ru>,
        Ekaterina Skachko <Ekaterina.Skachko@...kalelectronics.ru>,
        Vadim Vlasov <V.Vlasov@...kalelectronics.ru>,
        Alexey Kolotnikov <Alexey.Kolotnikov@...kalelectronics.ru>,
        Paul Burton <paul.burton@...tec.com>,
        Ralf Baechle <ralf@...ux-mips.org>,
        Rob Herring <robh+dt@...nel.org>,
        Frank Rowand <frowand.list@...il.com>,
        Tony Lindgren <tony@...mide.com>,
        Olof Johansson <olof@...om.net>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Jiri Slaby <jslaby@...e.com>,
        "open list:BROADCOM NVRAM DRIVER" <linux-mips@...r.kernel.org>,
        DTML <devicetree@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v3 00/14] mips: Prepare MIPS-arch code for Baikal-T1 SoC support

On Thu, May 21, 2020 at 9:18 AM Thomas Bogendoerfer
<tsbogend@...ha.franken.de> wrote:
> On Thu, May 21, 2020 at 03:42:17AM +0300, Serge Semin wrote:
> > On Thu, May 21, 2020 at 03:34:29AM +0300, Serge Semin wrote:
> > >
> > > This patchset is rebased and tested on the mainline Linux kernel 5.7-rc4:
> > > base-commit: 0e698dfa2822 ("Linux 5.7-rc4")
> > > tag: v5.7-rc4
> >
> > Thomas,
> > Please note that this patchset is based on the Linux 5.7-rc4 tree (it most likely
> > will get cleanly applied on rc6 as well), while mips-next is still at rc1. Due
> > to that the patchset fails to be applied on mips-next. I think it would be
> > better first to merge the last Linux tree into the mips-next, then try to merge
> > this patchset in. Should you have any problem after that, please let me know.
> > I'll resend the patchset being rebased on top of the new mips-next tree.
>
> no, that's not how it works. Please rebase your patches on top of
> mips-next. Thank you.

Right, backmerges should generally be avoided. However if something
between rc1 and rc4 is required to make Baikal-T1 work, rebasing it to
rc1 would make it non-bisectable, which is also bad.

Serge, are you aware of something in -rc4 that is needed as a dependency?

       Arnd