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From: Greg KH <gregkh@suse.de>
To: Alan Stern <stern@rowland.harvard.edu>
Cc: Adrian Bunk <bunk@stusta.de>, Adrian Bunk <bunk@kernel.org>,
	Linus Torvalds <torvalds@osdl.org>, Andrew Morton <akpm@osdl.org>,
	linux-kernel@vger.kernel.org,
	linux-usb-devel@lists.sourceforge.net,
	Oliver Neukum <oneukum@suse.de>
Subject: Re: [GIT PATCH] USB autosuspend fixes for 2.6.23-rc6
Date: Thu, 13 Sep 2007 09:34:05 -0700	[thread overview]
Message-ID: <20070913163405.GA8325@suse.de> (raw)
In-Reply-To: <Pine.LNX.4.44L0.0709131154240.7406-100000@iolanthe.rowland.org>

On Thu, Sep 13, 2007 at 12:07:15PM -0400, Alan Stern wrote:
> You _can't_ change the autosuspend setting for a device that hasn't yet
> been detected; you can only do it after detection.  But you _can_
> modify a whitelist either before or after a device is detected; any
> such modifications won't affect the already-existing devices.

Exactly.  The kernel will by default get the device up and working.  Any
capabilities to be changed after it is working can be done by userspace
with a "whitelist" type program that can properly tell the kernel that
this specific device can be safely suspended.

If you decide to do this in a small bash script, or in
HAL/udevd/DeviceKit/whatever, it all doesn't matter to the kernel.

thanks,

greg k-h

  reply	other threads:[~2007-09-13 16:32 UTC|newest]

Thread overview: 25+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-09-13 13:33 [GIT PATCH] USB autosuspend fixes for 2.6.23-rc6 Greg KH
2007-09-13 14:52 ` Adrian Bunk
2007-09-13 15:20   ` Alan Stern
2007-09-13 15:40     ` Adrian Bunk
2007-09-13 16:07       ` Alan Stern
2007-09-13 16:34         ` Greg KH [this message]
2007-09-13 16:43         ` Linus Torvalds
2007-09-13 19:13           ` Alan Stern
2007-09-14  0:24             ` Matthew Dharm
2007-09-14 14:34               ` Alan Stern
2007-09-14  8:55             ` Jiri Kosina
2007-09-14  9:59               ` Greg KH
2007-09-13 19:26           ` Pete Zaitcev
2007-09-13 20:19         ` Adrian Bunk
2007-09-13 20:31           ` Alan Stern
2007-09-13 20:44           ` Linus Torvalds
2007-09-13 21:28             ` Adrian Bunk
2007-09-13 22:05               ` Adrian Bunk
2007-09-14  0:11                 ` Linus Torvalds
2007-09-14 13:21                   ` Mark Lord
2007-09-14 14:15                     ` Adrian Bunk
2007-09-14 14:29                 ` Alan Stern
2007-09-14 14:26               ` Alan Stern
  -- strict thread matches above, loose matches on Subject: below --
2007-09-17 12:56 Hans de Goede
2007-09-18 10:39 Joerg Schilling

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