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Open Source and information security mailing list archives
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Date: Tue, 25 Mar 2008 15:24:33 +0100 From: Oliver Neukum <oliver@...kum.org> To: Alan Stern <stern@...land.harvard.edu> Cc: "Rafael J. Wysocki" <rjw@...k.pl>, ACPI Devel Maling List <linux-acpi@...r.kernel.org>, linux-pm@...ts.linux-foundation.org, Alexey Starikovskiy <astarikovskiy@...e.de>, Johannes Berg <johannes@...solutions.net>, LKML <linux-kernel@...r.kernel.org> Subject: Re: [linux-pm] [RFC][PATCH] PM: Introduce new top level suspend and hibernation callbacks (rev. 2) Am Dienstag, 25. März 2008 15:19:45 schrieb Alan Stern: > On Tue, 25 Mar 2008, Oliver Neukum wrote: > > > Am Dienstag, 25. März 2008 14:06:15 schrieb Rafael J. Wysocki: > > > On Tuesday, 25 of March 2008, Oliver Neukum wrote: > > > > > > A device that cannot wake up is unusable. Shouldn't the pm core disconnect() > > > > such a device? > > It's not safe for the PM core to do such things unilaterally. The > decision to unregister a device should be made by the driver or the > subsystem. Why? You can trigger it from user space via sysfs and in many cases suspending to disk will disconnect all devices on a bus, so I'd say a failure to resume is just a limited subcase of a device vanishing during sleep. Regards Oliver -- 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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