linux-kernel - Re: [PATCH 0/5] PCI: PM: Cleanups related to power state changes

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Date:   Tue, 5 Nov 2019 23:48:47 +0100
From:   "Rafael J. Wysocki" <rafael@...nel.org>
To:     Bjorn Helgaas <helgaas@...nel.org>
Cc:     "Rafael J. Wysocki" <rjw@...ysocki.net>,
        LKML <linux-kernel@...r.kernel.org>,
        Linux PCI <linux-pci@...r.kernel.org>,
        Linux PM <linux-pm@...r.kernel.org>,
        Mika Westerberg <mika.westerberg@...ux.intel.com>
Subject: Re: [PATCH 0/5] PCI: PM: Cleanups related to power state changes

On Tue, Nov 5, 2019 at 11:35 PM Bjorn Helgaas <helgaas@...nel.org> wrote:
>
> On Tue, Nov 05, 2019 at 12:28:47PM +0100, Rafael J. Wysocki wrote:
> > On Tuesday, November 5, 2019 11:11:57 AM CET Rafael J. Wysocki wrote:
> > > Hi,
> > >
> > > This series rearranges some PCI power management code to make it somewhat
> > > easier to follow and explicitly consolidate the power-up (transitions to
> > > D0) code path.
> > >
> > > It is not intended to change the functionality of the code.
> >
> > This series applies on top of 5.4-rc6 with your pci/pm-2 branch from today
> > merged on top of it.
> >
> > I guess I can make it apply on top of pci/pm-2, but there were some PCI PM
> > changes in 5.4-rc later than -rc1 in that area and they need to be taken
> > into account anyway.
>
> I applied the commits from pci/pm-2 to pci/pm (pci/pm-2 was really
> just to get the 0-day robot to build test it).
>
> pci/pm is based on v5.4-rc1, which doesn't have 45144d42f299 ("PCI:
> PM: Fix pci_power_up()"), which appeared in -rc4.
>
> All my branches are based on -rc1.  I *could* rebase them all to -rc4,
> but that's quite a bit of work and affects Lorenzo as well, so I'd
> rather not.  What's the git expert's way of doing this?

It is not necessary to rebase.

I would just merge the current pci/pm on top of v5.4-rc4 (or any later
-rc), commit my patches on top of that and push the result as the new
pci/pm.  That should be a fast-forward update.