From: Andrew Lunn <andrew@lunn.ch>
To: Heiner Kallweit <hkallweit1@gmail.com>
Cc: Florian Fainelli <f.fainelli@gmail.com>,
David Miller <davem@davemloft.net>,
"netdev@vger.kernel.org" <netdev@vger.kernel.org>,
Russell King - ARM Linux <linux@armlinux.org.uk>
Subject: Re: [PATCH net] net: phy: fix interrupt handling in non-started states
Date: Thu, 14 Feb 2019 02:17:21 +0100 [thread overview]
Message-ID: <20190214011721.GD24589@lunn.ch> (raw)
In-Reply-To: <25e86edc-0b88-8c03-b692-776e971331f2@gmail.com>
On Tue, Feb 12, 2019 at 07:56:15PM +0100, Heiner Kallweit wrote:
> phylib enables interrupts before phy_start() has been called, and if
> we receive an interrupt in a non-started state, the interrupt handler
> returns IRQ_NONE. This causes problems with at least one Marvell chip
> as reported by Andrew.
> Fix this by handling interrupts the same as in phy_mac_interrupt(),
> basically always running the phylib state machine. It knows when it
> has to do something and when not.
> This change allows to handle interrupts gracefully even if they
> occur in a non-started state.
>
> Fixes: 2b3e88ea6528 ("net: phy: improve phy state checking")
> Reported-by: Andrew Lunn <andrew@lunn.ch>
> Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Andrew
next prev parent reply other threads:[~2019-02-14 1:17 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-02-12 18:56 [PATCH net] net: phy: fix interrupt handling in non-started states Heiner Kallweit
2019-02-12 19:37 ` Andrew Lunn
2019-02-12 20:06 ` Heiner Kallweit
2019-02-14 1:17 ` Andrew Lunn [this message]
2019-02-14 4:10 ` Florian Fainelli
2019-02-14 4:44 ` David Miller
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