From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: David Brownell <david-b@pacbell.net>
Cc: Pavel Machek <pavel@ucw.cz>,
Alan Stern <stern@rowland.harvard.edu>,
Dominik Brugger <ml.dominik83@gmx.net>,
kernel list <linux-kernel@vger.kernel.org>,
linux-usb-devel@lists.sourceforge.net
Subject: Re: [linux-usb-devel] Re: OHCI problems with suspend/resume
Date: 01 Aug 2003 00:05:06 +0200 [thread overview]
Message-ID: <1059689105.2417.195.camel@gaston> (raw)
In-Reply-To: <3F299069.1010905@pacbell.net>
> I suspect that USB should do some non-global PM stuff too.
> Hub ports can be suspended when the devices connected to them
> are idle for long enough ... that's not something I'd expect
> system-wide PM policies to address.
Indeed, this is not addressed, though it may sense to have
a way in the device model to call the suspend/resume callbacks
of "childs" of a given hub only for that purpose, I don't think
this is implemented yet. Maybe talk to Patrick about it.
In general "local" power management (automatic disk spin down,
chipset idle-pm, etc...) is ... local to the driver, though you
can probably use the power state field of struct device to
store your current state if it maps to those semantics.
Ben.
next prev parent reply other threads:[~2003-07-31 22:06 UTC|newest]
Thread overview: 50+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-07-23 22:08 OHCI problems with suspend/resume Pavel Machek
2003-07-24 1:19 ` [linux-usb-devel] " David Brownell
2003-07-24 10:24 ` Pavel Machek
2003-07-24 17:10 ` David Brownell
2003-07-24 22:10 ` Pavel Machek
2003-07-24 12:37 ` Dominik Brugger
2003-07-24 12:56 ` Dominik Brugger
2003-07-24 22:04 ` Pavel Machek
2003-07-24 22:46 ` Pavel Machek
2003-07-25 7:52 ` Dominik Brugger
2003-07-25 15:06 ` [linux-usb-devel] " Alan Stern
2003-07-25 17:20 ` Benjamin Herrenschmidt
2003-07-25 22:48 ` David Brownell
2003-07-26 16:02 ` Alan Stern
2003-07-26 21:01 ` Pavel Machek
2003-07-26 21:16 ` David Brownell
2003-07-27 14:57 ` Alan Stern
2003-07-31 3:27 ` David Brownell
2003-07-31 3:51 ` David Brownell
2003-07-31 9:42 ` Pavel Machek
2003-07-31 13:37 ` David Brownell
2003-07-31 14:09 ` Pavel Machek
2003-07-31 17:32 ` David Brownell
2003-07-31 17:31 ` Pavel Machek
2003-07-31 21:32 ` Benjamin Herrenschmidt
2003-07-31 21:30 ` Benjamin Herrenschmidt
2003-07-31 21:29 ` Benjamin Herrenschmidt
2003-07-31 9:47 ` Pavel Machek
2003-07-31 13:30 ` David Brownell
2003-07-31 16:06 ` Pavel Machek
2003-07-31 9:49 ` Pavel Machek
2003-07-31 13:23 ` David Brownell
2003-07-31 16:07 ` Pavel Machek
2003-07-31 21:25 ` Benjamin Herrenschmidt
2003-07-31 21:25 ` Benjamin Herrenschmidt
2003-07-31 22:08 ` Pavel Machek
2003-07-31 21:23 ` Benjamin Herrenschmidt
2003-07-31 21:55 ` David Brownell
2003-07-31 22:05 ` Benjamin Herrenschmidt [this message]
2003-07-31 22:09 ` Pavel Machek
2003-07-31 23:12 ` Oliver Neukum
2003-08-01 9:33 ` Pavel Machek
2003-07-31 22:03 ` Pavel Machek
2003-08-01 0:27 ` Benjamin Herrenschmidt
2003-08-04 19:25 ` Pavel Machek
2003-08-01 18:20 ` Dominik Brugger
2003-07-29 13:16 ` [linux-usb-devel] " David Brownell
2003-07-31 14:18 ` Pavel Machek
2003-08-01 17:41 ` David Brownell
2003-08-07 22:35 ` Pavel Machek
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