linux-kernel - Re: [patch V2 01/23] powerpc/4xx: Remove MSI support which never worked

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Date:   Tue, 07 Dec 2021 21:42:22 +0100
From:   Thomas Gleixner <tglx@...utronix.de>
To:     Cédric Le Goater <clg@...d.org>,
        Michael Ellerman <mpe@...erman.id.au>,
        LKML <linux-kernel@...r.kernel.org>
Cc:     Bjorn Helgaas <helgaas@...nel.org>, Marc Zygnier <maz@...nel.org>,
        Alex Williamson <alex.williamson@...hat.com>,
        Kevin Tian <kevin.tian@...el.com>,
        Jason Gunthorpe <jgg@...dia.com>,
        Megha Dey <megha.dey@...el.com>,
        Ashok Raj <ashok.raj@...el.com>, linux-pci@...r.kernel.org,
        Paul Mackerras <paulus@...ba.org>,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        linuxppc-dev@...ts.ozlabs.org, Juergen Gross <jgross@...e.com>,
        Thomas Bogendoerfer <tsbogend@...ha.franken.de>,
        linux-mips@...r.kernel.org, Kalle Valo <kvalo@...eaurora.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        sparclinux@...r.kernel.org, x86@...nel.org,
        xen-devel@...ts.xenproject.org, ath11k@...ts.infradead.org,
        Wei Liu <wei.liu@...nel.org>, linux-hyperv@...r.kernel.org,
        Christian Borntraeger <borntraeger@...ibm.com>,
        Heiko Carstens <hca@...ux.ibm.com>
Subject: Re: [patch V2 01/23] powerpc/4xx: Remove MSI support which never
 worked

Cedric,

On Tue, Dec 07 2021 at 16:50, Cédric Le Goater wrote:
> On 12/7/21 12:36, Michael Ellerman wrote:
>> 
>> This patch should drop those selects I guess. Can you send an
>> incremental diff for Thomas to squash in?
>
> Sure.
>
>> Removing all the tendrils in various device tree files will probably
>> require some archaeology, and it should be perfectly safe to leave those
>> in the tree with the driver gone. So I think we can do that as a
>> subsequent patch, rather than in this series.
>
> Here are the changes. Compiled tested with ppc40x and ppc44x defconfigs.

< Lots of patch skipped />
> @@ -141,7 +138,6 @@ config REDWOOD
>   	select FORCE_PCI
>   	select PPC4xx_PCI_EXPRESS
>   	select PCI_MSI
> -	select PPC4xx_MSI
>   	help
>   	  This option enables support for the AMCC PPC460SX Redwood board.

While that is incremental it certainly is worth a patch on it's
own. Could you add a proper changelog and an SOB please?

Thanks,

        tglx