linux-mips
[Top] [All Lists]

Re: irq 117 on ubiquiti edge router lite

To: "Jason A. Donenfeld" <Jason@zx2c4.com>
Subject: Re: irq 117 on ubiquiti edge router lite
From: Aaro Koskinen <aaro.koskinen@iki.fi>
Date: Mon, 2 Sep 2013 23:28:24 +0300
Cc: linux-mips@linux-mips.org, David Daney <david.daney@cavium.com>
In-reply-to: <CAHmME9ppVfYd6u+9iMFeTO1s11okAJ7Jm=hp+iE3FdLTTcCNJA@mail.gmail.com>
List-archive: <http://www.linux-mips.org/archives/linux-mips/>
List-help: <mailto:ecartis@linux-mips.org?Subject=help>
List-id: linux-mips <linux-mips.eddie.linux-mips.org>
List-owner: <mailto:ralf@linux-mips.org>
List-post: <mailto:linux-mips@linux-mips.org>
List-software: Ecartis version 1.0.0
List-subscribe: <mailto:ecartis@linux-mips.org?subject=subscribe%20linux-mips>
List-unsubscribe: <mailto:ecartis@linux-mips.org?subject=unsubscribe%20linux-mips>
Original-recipient: rfc822;linux-mips@linux-mips.org
References: <CAHmME9ppVfYd6u+9iMFeTO1s11okAJ7Jm=hp+iE3FdLTTcCNJA@mail.gmail.com>
Sender: linux-mips-bounce@linux-mips.org
User-agent: Mutt/1.5.21 (2010-09-15)
On Mon, Sep 02, 2013 at 05:12:49PM +0200, Jason A. Donenfeld wrote:
> [83817.191824] irq 117: nobody cared (try booting with the "irqpoll" option)
[...]
> [83817.192109] handlers:
> [83817.192115] [<ffffffff815a88d8>] 0xffffffff815a88d8
> [83817.192120] Disabling IRQ #117

Confirmed. The handler is cvm_oct_rgmii_rml_interrupt(). This happens
with fast network cable unplug/replug/unplug/replug. It seems there's
some kind of race and the interrupt won't get acked properly and there
is a huge flood of them:

117:     100000          0       CIU  46  RGMII

A.

<Prev in Thread] Current Thread [Next in Thread>