linux-kernel - Re: [PATCH 01/20] net: phy: realtek: Fix events detection failure in LPI mode

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Message-ID: <20210209105646.GP1463@shell.armlinux.org.uk>
Date:   Tue, 9 Feb 2021 10:56:46 +0000
From:   Russell King - ARM Linux admin <linux@...linux.org.uk>
To:     Heiner Kallweit <hkallweit1@...il.com>
Cc:     Serge Semin <Sergey.Semin@...kalelectronics.ru>,
        Jose Abreu <Jose.Abreu@...opsys.com>,
        Andrew Lunn <andrew@...n.ch>,
        Joao Pinto <Joao.Pinto@...opsys.com>,
        linux-kernel@...r.kernel.org,
        Alexandre Torgue <alexandre.torgue@...com>,
        netdev@...r.kernel.org, linux-stm32@...md-mailman.stormreply.com,
        Serge Semin <fancer.lancer@...il.com>,
        Alexey Malahov <Alexey.Malahov@...kalelectronics.ru>,
        Jose Abreu <joabreu@...opsys.com>,
        Pavel Parkhomenko <Pavel.Parkhomenko@...kalelectronics.ru>,
        Maxime Coquelin <mcoquelin.stm32@...il.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Giuseppe Cavallaro <peppe.cavallaro@...com>,
        Vyacheslav Mitrofanov 
        <Vyacheslav.Mitrofanov@...kalelectronics.ru>,
        "David S. Miller" <davem@...emloft.net>,
        linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH 01/20] net: phy: realtek: Fix events detection failure in
 LPI mode

On Tue, Feb 09, 2021 at 11:37:29AM +0100, Heiner Kallweit wrote:
> Right, adding something like a genphy_{read,write}_mmd() doesn't make
> too much sense for now. What I meant is just exporting mmd_phy_indirect().
> Then you don't have to open-code the first three steps of a mmd read/write.
> And it requires no additional code in phylib.

... but at the cost that the compiler can no longer inline that code,
as I mentioned in my previous reply. (However, the cost of the accesses
will be higher.) On the plus side, less I-cache footprint, and smaller
kernel code.

-- 
RMK's Patch system: https://www.armlinux.org.uk/developer/patches/
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