From: Jens Schmalzing <jens.schmalzing@physik.uni-muenchen.de>
To: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: <linuxppc-dev@lists.linuxppc.org>
Subject: Re: SUNGEM config
Date: 14 Feb 2002 06:42:47 +0900 [thread overview]
Message-ID: <87ofitf488.fsf@theorie.physik.uni-muenchen.de> (raw)
In-Reply-To: <20020213211243.28959@smtp.wanadoo.fr>
Hi,
> I shut down the device when the interface is down for more than
> about 10 seconds.
> Either I fake the ioctl and return no link,
Which makes ifd useless, because it won't be able to detect that a
link is actually present.
> or I power it back up each time, preventing basically the chip to
> ever be power managed.
Which consumes unnecassary power, reducing battery life. I see the
point. Would it make sense to make the time between the link going
down and the device powering off configurable, either as a module
parameter or as a kernel config option? Then one could choose to have
either sensible power management or automatic link detection, if it's
not possible to get both.
Regards, Jens.
--
J'qbpbe, le m'en fquz pe j'qbpbe!
Le veux aimeb et mqubib panz je pézqbpbe je djuz tqtaj!
** Sent via the linuxppc-dev mail list. See http://lists.linuxppc.org/
next prev parent reply other threads:[~2002-02-13 21:42 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-02-12 19:15 SUNGEM config Christopher Murtagh
2002-02-13 10:59 ` benh
2002-02-13 16:52 ` Jens Schmalzing
2002-02-13 17:28 ` benh
2002-02-13 21:06 ` Jens Schmalzing
2002-02-13 21:12 ` Benjamin Herrenschmidt
2002-02-13 21:42 ` Jens Schmalzing [this message]
2002-02-13 22:19 ` Benjamin Herrenschmidt
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