From: Stephen Hemminger <shemminger@linux-foundation.org>
To: Mike McCormack <mikem@ring3k.org>
Cc: netdev@vger.kernel.org
Subject: Re: [PATCH 2/3] sky2: Reading registers in reset causes a hang
Date: Mon, 12 Oct 2009 09:14:59 -0700 [thread overview]
Message-ID: <20091012091459.49eb1188@nehalam> (raw)
In-Reply-To: <4AD337ED.4090409@ring3k.org>
On Mon, 12 Oct 2009 23:06:37 +0900
Mike McCormack <mikem@ring3k.org> wrote:
> When sky2 hardware is in reset, reading registers with ethtool -d
> causes a hard system hang. eg.
>
> ifconfig eth1 down
> ethtool -d eth1
>
> Avoid reading FIFOs, descriptor and status unit, etc. after we've
> bought the interface down, as these seem to cause the issue.
>
> Assume the same is true for the second port, as my port only has
> one card.
I don't see this on my cards. Let me investigate further before
committing this. Also, the debugfs interface would also be screwed
if the registers were unavailable.
next prev parent reply other threads:[~2009-10-12 16:16 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-10-12 14:06 [PATCH 2/3] sky2: Reading registers in reset causes a hang Mike McCormack
2009-10-12 16:14 ` Stephen Hemminger [this message]
2009-10-12 22:36 ` Mike McCormack
2009-10-13 16:00 ` Stephen Hemminger
2009-10-13 23:08 ` Mike McCormack
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