netdev - Re: [net-next: PATCH v2 5/5] net: mvpp2: enable ACPI support in the driver

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Message-ID: <CAPv3WKchh4CHS7x0T_9vJ++=ONK5vtLh8oRN_7fgq0uPH29jwA@mail.gmail.com>
Date:   Wed, 3 Jan 2018 12:19:02 +0100
From:   Marcin Wojtas <mw@...ihalf.com>
To:     Graeme Gregory <graeme.gregory@...aro.org>
Cc:     Andrew Lunn <andrew@...n.ch>, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        netdev <netdev@...r.kernel.org>, linux-acpi@...r.kernel.org,
        "David S. Miller" <davem@...emloft.net>,
        Russell King - ARM Linux <linux@...linux.org.uk>,
        "Rafael J. Wysocki" <rafael.j.wysocki@...el.com>,
        Florian Fainelli <f.fainelli@...il.com>,
        Antoine Ténart <antoine.tenart@...e-electrons.com>,
        Thomas Petazzoni <thomas.petazzoni@...e-electrons.com>,
        Gregory Clément 
        <gregory.clement@...e-electrons.com>,
        Ezequiel Garcia <ezequiel.garcia@...e-electrons.com>,
        nadavh@...vell.com, Neta Zur Hershkovits <neta@...vell.com>,
        Ard Biesheuvel <ard.biesheuvel@...aro.org>,
        Grzegorz Jaszczyk <jaz@...ihalf.com>,
        Tomasz Nowicki <tn@...ihalf.com>
Subject: Re: [net-next: PATCH v2 5/5] net: mvpp2: enable ACPI support in the driver

Graeme,

2018-01-03 12:16 GMT+01:00  <graeme.gregory@...aro.org>:
> On Sun, Dec 31, 2017 at 08:23:54PM +0100, Andrew Lunn wrote:
>> > * Modify way of obtaining interrupts - with ACPI they are resources
>> >   bound to struct platform_device and it's not possible to obtain
>> >   them directly from the child node. Hence a formula is used, depending
>> >   on the port_id and number of possible CPUs.
>>
>> Hi Marcin
>>
>> I know nothing about ACPI. Is this limitation with respect to
>> interrupts fundamental to ACPI, or just that nobody has implemented
>> flexible interrupt support yet?
>>
> The infrastructure is there to traverse trees of children, but I don't
> think there any helper functions.
>

Thanks, so if I implement such, do you expect any formal issues that
prevent its acceptance?

Best regards,
Marcin