netdev - am335x: cpsw: interrupt failure

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Date:	Thu, 4 Dec 2014 17:41:38 +0100
From:	Yegor Yefremov <yegorslists@...glemail.com>
To:	netdev <netdev@...r.kernel.org>
Cc:	"N, Mugunthan V" <mugunthanvnm@...com>, Felipe Balbi <balbi@...com>
Subject: am335x: cpsw: interrupt failure

I have following problem. My systems reboots at high network load
after this commit (found via git bissect):

commit 55601c9f24670ba926ebdd4d712ac3b177232330
Author: Felipe Balbi <balbi@...com>
Date:   Mon Sep 8 17:54:58 2014 -0700

    arm: omap: intc: switch over to linear irq domain

    now that we don't need to support legacy board-files,
    we can completely switch over to a linear irq domain
    and make use of irq_alloc_domain_generic_chips() to
    allocate all generic irq chips for us.

    Signed-off-by: Felipe Balbi <balbi@...com>
    Signed-off-by: Tony Lindgren <tony@...mide.com>

and I get following error messages:

irq 0, desc: cf004000, depth: 1, count: 0, unhandled: 0
->handle_irq():  c0087fc0, handle_bad_irq+0x0/0x258
->irq_data.chip(): c08e7174, no_irq_chip+0x0/0x68
->action():   (null)
   IRQ_NOPROBE set
 IRQ_NOREQUEST set
irq 0, desc: cf004000, depth: 1, count: 0, unhandled: 0
->handle_irq():  c0087fc0, handle_bad_irq+0x0/0x258
->irq_data.chip(): c08e7174, no_irq_chip+0x0/0x68
->action():   (null)
   IRQ_NOPROBE set
 IRQ_NOREQUEST set
irq 0, desc: cf004000, depth: 1, count: 0, unhandled: 0
->handle_irq():  c0087fc0, handle_bad_irq+0x0/0x258
->irq_data.chip(): c08e7174, no_irq_chip+0x0/0x68
->action():   (null)
   IRQ_NOPROBE set
 IRQ_NOREQUEST set
irq 0, desc: cf004000, depth: 1, count: 0, unhandled: 0
->handle_irq():  c0087fc0, handle_bad_irq+0x0/0x258
->irq_data.chip(): c08e7174, no_irq_chip+0x0/0x68
->action():   (null)

My system: am335x with fast ethernet on the first slave and gigabit
Ethernet on second CPSW slave. This issue occurs, when I ran nuttcp
with default settings.

With commit above I can at least see these messages, but 3.18-rc7 for
example reboots without any messages.

Any idea?

Yegor
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