From: Ming Lei <tom.leiming@gmail.com>
To: Alan Stern <stern@rowland.harvard.edu>
Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>,
Ming Lei <ming.lei@canonical.com>,
linux-media@vger.kernel.org, linux-usb@vger.kernel.org,
Jeremy Kerr <jeremy.kerr@canonical.com>,
Mauro Carvalho Chehab <mchehab@redhat.com>
Subject: Re: [PATCH] uvcvideo: add fix suspend/resume quirk for Microdia camera
Date: Wed, 13 Jul 2011 23:30:09 +0800 [thread overview]
Message-ID: <CACVXFVPJvuzKZetupzBf+GhwZKV10EHjpNUwTz98sweH3xkd4w@mail.gmail.com> (raw)
In-Reply-To: <Pine.LNX.4.44L0.1107131118550.2156-100000@iolanthe.rowland.org>
Hi,
On Wed, Jul 13, 2011 at 11:20 PM, Alan Stern <stern@rowland.harvard.edu> wrote:
> Why should system suspend be different from runtime suspend? Have you
This is also my puzzle, :-)
> compared usbmon traces for the two types of suspend?
Almost same. If I add USB_QUIRK_RESET_RESUME quirk for the device,
the stream data will not be received from the device in runtime pm case,
same with that in system suspend.
Maybe buggy BIOS makes root hub send reset signal to the device during
system suspend time, not sure...
thanks,
--
Ming Lei
next prev parent reply other threads:[~2011-07-13 15:30 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-07-11 9:48 [PATCH] uvcvideo: add fix suspend/resume quirk for Microdia camera Ming Lei
2011-07-11 10:44 ` Laurent Pinchart
2011-07-12 1:21 ` Ming Lei
2011-07-12 10:52 ` Ming Lei
2011-07-12 15:44 ` Alan Stern
2011-07-13 7:43 ` Ming Lei
2011-07-13 15:20 ` Alan Stern
2011-07-13 15:30 ` Ming Lei [this message]
2011-07-13 15:59 ` Alan Stern
2011-07-14 9:16 ` Ming Lei
2011-07-14 15:03 ` Alan Stern
2011-07-15 2:08 ` Ming Lei
2011-07-15 13:53 ` Ming Lei
2011-07-15 14:27 ` Alan Stern
2011-07-15 14:44 ` Ming Lei
2011-07-15 15:25 ` Alan Stern
2011-07-16 3:51 ` [PATCH] uvcvideo: add SetInterface(0) in .reset_resume handler Ming Lei
2011-07-31 15:38 ` Laurent Pinchart
2011-08-01 0:56 ` Ming Lei
2011-08-01 11:26 ` Laurent Pinchart
2011-08-01 17:39 ` Mauro Carvalho Chehab
2011-08-01 22:19 ` [GIT PATCH FOR v3.1] uvcvideo: Set alternate setting 0 on resume if the bus has been reset Laurent Pinchart
2011-07-13 8:35 ` [PATCH] uvcvideo: add fix suspend/resume quirk for Microdia camera Ming Lei
2011-07-13 8:38 ` Laurent Pinchart
2011-07-13 8:51 ` Ming Lei
2011-07-13 8:55 ` Oliver Neukum
2011-07-13 8:59 ` Laurent Pinchart
2011-07-13 9:07 ` Ming Lei
2011-07-11 10:51 ` Sergei Shtylyov
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