linux-kernel - Re: [PATCH] fix PHY polling system blocking

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Message-Id: <20100313.121248.76758764.davem@davemloft.net>
Date:	Sat, 13 Mar 2010 12:12:48 -0800 (PST)
From:	David Miller <davem@...emloft.net>
To:	stefani@...bold.net
Cc:	linux-kernel@...r.kernel.org, netdev@...r.kernel.org
Subject: Re: [PATCH] fix PHY polling system blocking

From: Stefani Seibold <stefani@...bold.net>
Date: Sat, 13 Mar 2010 13:53:10 +0100

> For PHY chips without interrupts, the status of the ethernet will be
> polled every 2 sec. The poll function will read some register of the MII
> PHY. The time between the sending the MII_READ_COMMAND and receiving the
> result could be very long (>100us).

I'm not apply this, as I described in my previous email.

If it's expensive to detect link configuration changes that
doesn't mean you just turn it off.
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