From mboxrd@z Thu Jan 1 00:00:00 1970 From: Matthew Garrett Subject: IDE failure on ACPI resume Date: Sun, 13 Mar 2005 19:14:01 +0000 Message-ID: <1110741241.8136.46.camel@tyrosine> Mime-Version: 1.0 Content-Type: text/plain Content-Transfer-Encoding: 7bit Sender: acpi-devel-admin-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org Errors-To: acpi-devel-admin-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , List-Archive: To: acpi-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-Id: linux-acpi@vger.kernel.org On resume, an HP nc6220 fails during resuming of the IDE devices. In this section of code from ide-iops.c: stat = hwif->INB(hwif->io_ports[IDE_STATUS_OFFSET]); if ((stat & BUSY_STAT) == 0) return 0; /* * Assume a value of 0xff means nothing is connected to * the interface and it doesn't implement the pull-down * resistor on D7. */ if (stat == 0xff) return -ENODEV; 0xff is read and ENODEV returned. This results in hda: bus not ready on wakeup hda: drive not ready on wakeup and then the machine sits there until some later command times out. It seems that reading anything off the IDE bus just results in 0xff being read. The IDE controller is an Intel ICH6. Another HP laptop with an identical chipset works fine, which makes me suspicious of the BIOS. Is the fact that Linux doesn't seem to run the GTF, STM or GTM methods likely to be relevant here? -- Matthew Garrett | mjg59-1xO5oi07KQx4cg9Nei1l7Q@public.gmane.org ------------------------------------------------------- SF email is sponsored by - The IT Product Guide Read honest & candid reviews on hundreds of IT Products from real users. Discover which products truly live up to the hype. Start reading now. http://ads.osdn.com/?ad_id=6595&alloc_id=14396&op=click