From: "Rafael J. Wysocki" <rjw@sisk.pl>
To: Oliver Neukum <oliver@neukum.org>
Cc: linux-pm@lists.linux-foundation.org, linux-pm@lists.osdl.org
Subject: Re: notification on system wide suspend
Date: Tue, 22 May 2007 23:09:01 +0200 [thread overview]
Message-ID: <200705222309.01751.rjw@sisk.pl> (raw)
In-Reply-To: <200705222254.07224.oliver@neukum.org>
Hi,
On Tuesday, 22 May 2007 22:54, Oliver Neukum wrote:
> Hi,
>
> I've got a problem with system wide suspend.
>
> The HID layer can cause output triggered in interrupt, even interrupts
> caused by another device. Thus the freezer does not prevent output
> requests. If a HID device has been autosuspended the output request
> should cause the device to be woken up.
>
> During hibernations and system wide suspends, however, output must
> be blocked and the request queued.
>
> Unfortunately I can't reliably tell whether I may or may not restart the
> queue. The suspend() method is not called again if a device has been
> runtime autosuspended. Is there a notifier chain a driver can hook into?
Not at present, but I'm going to introduce one.
Greetings,
Rafael
prev parent reply other threads:[~2007-05-22 21:09 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-05-22 20:54 notification on system wide suspend Oliver Neukum
2007-05-22 21:09 ` Rafael J. Wysocki [this message]
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