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Date: Sun, 7 Jun 2009 23:10:52 -0400 (EDT) From: Alan Stern <stern@...land.harvard.edu> To: Matthew Garrett <mjg59@...f.ucam.org> cc: alan-jenkins@...fmail.co.uk, Pekka Enberg <penberg@...helsinki.fi>, Corentin Chary <corentin.chary@...il.com>, <acpi4asus-user@...ts.sourceforge.net>, <len.brown@...el.com>, <linux-kernel@...r.kernel.org>, <linux-usb@...r.kernel.org>, Darren Salt <linux@...mustbejoking.demon.co.uk> Subject: Re: [PATCH] eeepc-laptop: enable camera by default On Mon, 8 Jun 2009, Matthew Garrett wrote: > On Sun, Jun 07, 2009 at 11:03:48PM -0400, Alan Stern wrote: > > > There's no mechanism for this. It many environments it couldn't work, > > because the decision about whether to enable autosuspend is made when > > the device is first created (i.e., when the creation uevent is > > received), whereas driver binding doesn't occur until later. > > There's a lot of power management situations where you don't end up with > the optimal power configuration until a driver's bound. It's certainly > possible to do this in userspace, but if we know that the hardware > supported by a given driver will always work then it seems reasonable to > have it whitelist autosuspend on that device. Sure. Such a thing could be added easily enough. It just doesn't exist now, that's all. Alan Stern -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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