netdev - Re: [net-next PATCH 3/3] qlge: Add watchdog timer.

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Message-Id: <20100203.193222.64773800.davem@davemloft.net>
Date:	Wed, 03 Feb 2010 19:32:22 -0800 (PST)
From:	David Miller <davem@...emloft.net>
To:	ron.mercer@...gic.com
Cc:	netdev@...r.kernel.org
Subject: Re: [net-next PATCH 3/3] qlge: Add watchdog timer.

From: Ron Mercer <ron.mercer@...gic.com>
Date: Wed,  3 Feb 2010 09:24:13 -0800

> Add periodic heartbeat register read to trigger the eeh
> recovery process.
> We see cases where an eeh error was injected and the slot was
> suspended.  An asic access attempt is required to flush the recovery process,
> but without interrupts the process can stall.
> Adding this periodic register read causes the recovery process to begin.
> 
> Signed-off-by: Ron Mercer <ron.mercer@...gic.com>

This does a PIO to the chip every single second?

How about something like 5 or 10 seconds, and use the
deferrable interfaces so that it's more friendly to
power management on an otherwise idle system?

Thanks.
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