From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Rafael J. Wysocki" Subject: Re: [linux-pm] ehci_hcd related S3 lockup on ASUS laptops, again Date: Wed, 18 Apr 2012 23:44:16 +0200 Message-ID: <201204182344.16986.rjw@sisk.pl> References: Mime-Version: 1.0 Content-Type: Text/Plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: Sender: linux-usb-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Alan Stern Cc: linux-pm-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org, Steven Rostedt , jrnieder-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org, Andrey Rahmatullin , USB list List-Id: linux-pm@vger.kernel.org On Wednesday, April 18, 2012, Alan Stern wrote: > On Wed, 18 Apr 2012, Rafael J. Wysocki wrote: > > > > Yes, there are ways to work around this. At the moment I'm not sure > > > what would be best; we can ask Rafael. One big remaining puzzle: Why > > > are the EHCI controllers the only devices that cause a crash when left > > > in D3 during suspend? We may never know... > > > > Are they put into D3 by ACPI or using the native PCI PM? > > PCI PM, definitely. Maybe ACPI gets into the act as well, but I doubt > it. How would we tell? If ACPI is involved, the dev_printk() in acpi_pci_set_power_state() should trigger. Thanks, Rafael -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html