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Subject: Re: [PATCH] net: usb: lan78xx: Use phy_mac_interrupt() for interrupt
 handling
To:     Daniel Wagner <dwagner@suse.de>,
        Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Cc:     Jakub Kicinski <jakub.kicinski@netronome.com>,
        UNGLinuxDriver@microchip.com, netdev@vger.kernel.org,
        linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org,
        linux-rt-users@vger.kernel.org,
        Woojung Huh <woojung.huh@microchip.com>,
        Marc Zyngier <maz@kernel.org>, Andrew Lunn <andrew@lunn.ch>,
        Jisheng Zhang <Jisheng.Zhang@synaptics.com>,
        Thomas Gleixner <tglx@linutronix.de>
References: <20191018082817.111480-1-dwagner@suse.de>
 <20191018131532.dsfhyiilsi7cy4cm@linutronix.de>
 <20191022101747.001b6d06@cakuba.netronome.com>
 <20191023074719.gcov5xfrcvns5tlg@beryllium.lan>
 <20191023080640.zcw2f2v7fpanoewm@beryllium.lan>
 <20191024104317.32bp32krrjmfb36p@linutronix.de>
 <20191024110610.lwwy75dkgwjdxml6@beryllium.lan>
 <20191024141216.wz2dcdxy4mrl2q5a@beryllium.lan>
From:   Stefan Wahren <wahrenst@gmx.net>
Message-ID: <78ab19da-2f30-86e0-fad1-667f5e6ba8b1@gmx.net>
Date:   Thu, 24 Oct 2019 19:25:37 +0200
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Hi Daniel,

Am 24.10.19 um 16:12 schrieb Daniel Wagner:
> On Thu, Oct 24, 2019 at 01:06:10PM +0200, Daniel Wagner wrote:
>
> Sebastians suggested to try the RPi kernel. The rpi-5.2.y kernel
> behaves exactly the same. That is one PHY interrupt and later on NFS
> timeouts.
>
> According their website the current shipped RPi kernel is in version
> 4.18. Here is what happends with rpi-4.18.y:

No, it's 4.19. It's always a LTS kernel.

I'm curious, what's the motivation behind this? The rpi tree contains
additional hacks, so i'm not sure the results are comparable. Also the
USB host driver is a different one.

> There are no NFS timeouts and commands like 'apt update' work reasoble
> fast. So no long delays or hangs. Time to burn this hardware.

Since enabling lan78xx for Raspberry Pi 3B+, we found a lot of driver
issues. So i'm not really surprised, that there are still more of them.

Thanks Stefan