Linux Input/HID development
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From: Oliver Neukum <oliver@neukum.org>
To: Alan Stern <stern@rowland.harvard.edu>
Cc: Jiri Kosina <jkosina@suse.cz>,
	USB list <linux-usb@vger.kernel.org>,
	linux-input@vger.kernel.org, dmitry.torokhov@gmail.com
Subject: Re: [patch]full autosuspend for USB HID
Date: Wed, 7 May 2008 19:13:35 +0200	[thread overview]
Message-ID: <200805071913.36445.oliver@neukum.org> (raw)
In-Reply-To: <Pine.LNX.4.44L0.0805071145130.3701-100000@iolanthe.rowland.org>

Am Mittwoch 07 Mai 2008 17:46:38 schrieb Alan Stern:
> > The basic strategy for input is to keep the device marked busy. The bulk of the
> > patch is for output, the work around for the release stuff and synchronization.
> 
> One big problem we always faced with autosuspend for keyboards is that
> most of them were not able to autoresume quickly enough to avoid losing
> keystrokes.  Isn't that still a problem?

For some keyboards that seems to be a limitation of the hardware nothing
can be done about. Others do work, for example 046d:c312. Generally
as autosuspend is now disabled by default this is user space's problem.
IMHO the main use case for autosuspend of keyboards will be synchronized
with the screen saver.

	Regards
		Oliver

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      parent reply	other threads:[~2008-05-07 17:13 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-05-07 12:50 [patch]full autosuspend for USB HID Oliver Neukum
     [not found] ` <200805071450.39499.oliver-GvhC2dPhHPQdnm+yROfE0A@public.gmane.org>
2008-05-07 15:46   ` Alan Stern
2008-05-07 15:49     ` Jiri Kosina
2008-05-07 15:57       ` Alan Stern
2008-05-07 15:59         ` Jiri Kosina
     [not found]           ` <Pine.LNX.4.64.0805071758240.11363-YCXOAqNspd+N3ZZ/Hiejyg@public.gmane.org>
2008-05-07 16:06             ` Alan Stern
2008-05-07 17:18         ` Oliver Neukum
2008-05-07 17:13     ` Oliver Neukum [this message]

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