From: Jiri Kosina <jkosina-AlSwsSmVLrQ@public.gmane.org>
To: Oliver Neukum <oliver-GvhC2dPhHPQdnm+yROfE0A@public.gmane.org>
Cc: Dmitry Torokhov
<dmitry.torokhov-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>,
Alan Stern
<stern-nwvwT67g6+6dFdvTe/nMLpVzexx5G7lz@public.gmane.org>,
Ville Syrj?l? <syrjala-ORSVBvAovxo@public.gmane.org>,
daniel.ritz-OI3hZJvNYWs@public.gmane.org,
linux-usb-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-input-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Subject: Re: [rft]power management for usbtouch
Date: Tue, 1 Jul 2008 09:59:01 +0200 (CEST) [thread overview]
Message-ID: <alpine.LNX.1.10.0807010957320.6375@jikos.suse.cz> (raw)
In-Reply-To: <200807010046.34219.oliver-GvhC2dPhHPQdnm+yROfE0A@public.gmane.org>
On Tue, 1 Jul 2008, Oliver Neukum wrote:
>> Ok, I see... So what does a device do when it is suspended and a
>> request comes in? Does it automatically resume and service the request
>> (and potentially goes back to sleep)? Does it queue the request for
>> later? Ignore it? Is it a system-wide policy or up to the device
>> [class]?
> Return an error. If you queue, how much would you queue?
> There's no sane answer, so you better fail right away.
I guess that Dmitry's question was about the behavior of the driver,
right? For example in situation when the LED state changes on PS/2
keyboard, what should the USB keyboard driver do for a suspended USB
keyboard.
I really don't think we want to return error in such cases. Either resume
the device, or queue some requests (maybe depending on the type of
requests), right?
--
Jiri Kosina
SUSE Labs
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next prev parent reply other threads:[~2008-07-01 7:59 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-06-26 13:57 [rft]power management for usbtouch Oliver Neukum
2008-06-26 14:45 ` Ville Syrjälä
[not found] ` <20080626144545.GF22310-ORSVBvAovxo@public.gmane.org>
2008-06-26 14:56 ` Oliver Neukum
[not found] ` <200806261656.06457.oliver-GvhC2dPhHPQdnm+yROfE0A@public.gmane.org>
2008-06-27 8:50 ` Oliver Neukum
2008-06-27 13:17 ` Ville Syrjälä
2008-06-27 16:10 ` Ville Syrjälä
[not found] ` <20080627161036.GE19430-ORSVBvAovxo@public.gmane.org>
2008-06-27 19:07 ` Oliver Neukum
2008-06-27 20:20 ` Ville Syrjälä
[not found] ` <20080627202027.GG19430-ORSVBvAovxo@public.gmane.org>
2008-06-27 20:41 ` Oliver Neukum
[not found] ` <200806272241.22513.oliver-GvhC2dPhHPQdnm+yROfE0A@public.gmane.org>
2008-06-27 20:51 ` Ville Syrjälä
[not found] ` <20080627205147.GI19430-ORSVBvAovxo@public.gmane.org>
2008-06-27 20:57 ` Oliver Neukum
2008-06-27 21:28 ` Ville Syrjälä
2008-06-28 10:52 ` Oliver Neukum
2008-06-28 11:22 ` Ville Syrjälä
[not found] ` <20080628112258.GK19430-ORSVBvAovxo@public.gmane.org>
2008-06-28 12:53 ` Oliver Neukum
2008-06-28 16:33 ` Alan Stern
2008-06-28 22:47 ` Oliver Neukum
[not found] ` <200806290047.56736.oliver-GvhC2dPhHPQdnm+yROfE0A@public.gmane.org>
2008-06-30 15:29 ` Dmitry Torokhov
2008-06-30 15:47 ` Alan Stern
2008-06-30 16:02 ` Dmitry Torokhov
[not found] ` <20080630115953.ZZRA012-NG0XCrj25/nJrYCpivWRnl5pS2h4L8biXqFh9Ls21Oc@public.gmane.org>
2008-06-30 16:16 ` Alan Stern
2008-06-30 16:30 ` Dmitry Torokhov
2008-06-30 16:58 ` Alan Stern
2008-06-30 22:46 ` Oliver Neukum
[not found] ` <200807010046.34219.oliver-GvhC2dPhHPQdnm+yROfE0A@public.gmane.org>
2008-07-01 7:59 ` Jiri Kosina [this message]
2008-07-01 9:08 ` Oliver Neukum
2008-07-01 12:56 ` Dmitry Torokhov
2008-07-01 15:00 ` Alan Stern
[not found] ` <Pine.LNX.4.44L0.0807011058340.2780-100000-IYeN2dnnYyZXsRXLowluHWD2FQJk+8+b@public.gmane.org>
2008-07-01 16:02 ` Dmitry Torokhov
[not found] ` <20080701085504.ZZRA012-NG0XCrj25/nJrYCpivWRnl5pS2h4L8biXqFh9Ls21Oc@public.gmane.org>
2008-07-01 16:57 ` Oliver Neukum
[not found] ` <200807011857.02259.oliver-GvhC2dPhHPQdnm+yROfE0A@public.gmane.org>
2008-07-01 17:39 ` Ville Syrjälä
2008-07-01 19:03 ` Alan Stern
2008-06-27 13:17 ` Ville Syrjälä
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