On Thu, 23 Sep 2010 17:27:24 -0400 Chuck Ebbert <cebbert@xxxxxxxxxx> wrote: > It looks like pata_it821x has never supported FLUSH_CACHE, but now That depends on the firmware you have I believe The ident it provides also doesn't advertise flush cache so something appears to be issuing a cache flush despite the drive reporting that it is not supported. > we're seeing repeated failures. They happen over and over again and > prevent installation. I stuck a dump_stack() in the failure path and > got this: Yes you'll crash some firmware versions if this occurs. See: static unsigned int it821x_read_id(struct ata_device *adev, struct ata_taskfile *tf, u16 *id) If this has stopped working then you probably want to get Jeff to trace back into the ATA and SCSI midlayer to see why it is issuing flushes for a device which is reporting that cache flush is not supported - because that is seriously broken. -- To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html