linux-kernel - Re: [PATCH] powerpc: isa-bridge: Fix ISA mmapping when "ranges" is not present

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Message-Id: <168836167601.46386.17041701491443802315.b4-ty@ellerman.id.au>
Date:   Mon, 03 Jul 2023 15:21:16 +1000
From:   Michael Ellerman <patch-notifications@...erman.id.au>
To:     Nicholas Piggin <npiggin@...il.com>,
        Christophe Leroy <christophe.leroy@...roup.eu>,
        Rob Herring <robh@...nel.org>
Cc:     Darren Stevens <darren@...vens-zone.net>,
        "R.T.Dickinson" <rtd2@...a.co.nz>,
        Christian Zigotzky <chzigotzky@...osoft.de>,
        linuxppc-dev@...ts.ozlabs.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] powerpc: isa-bridge: Fix ISA mmapping when "ranges" is not present

On Fri, 05 May 2023 12:18:17 -0500, Rob Herring wrote:
> Commit e4ab08be5b49 ("powerpc/isa-bridge: Remove open coded "ranges"
> parsing") broke PASemi Nemo board booting. The issue is the ISA I/O
> range was not getting mapped as the logic to handle no "ranges" was
> inverted. If phb_io_base_phys is non-zero, then the ISA range defaults
> to the first 64K of the PCI I/O space. phb_io_base_phys should only be 0
> when looking for a non-PCI ISA region.
> 
> [...]

Applied to powerpc/fixes.

[1/1] powerpc: isa-bridge: Fix ISA mmapping when "ranges" is not present
      https://git.kernel.org/powerpc/c/79de36042eecb684e0f748d17ba52f365fde0d65

cheers