On Mon, 18 Jul 2011, Seth Forshee wrote: > The following patch is in response to a consistently reproducible > failure to freeze tasks prior to restoring a hibernation image on a > Toshiba NB505 netbook. This machine has a built-in USB card reader. > Since the usb-stor-scan task is freezable but the code in > quiesce_and_remove_host() that waits for scanning to complete is not, > khubd can fail to freeze when processing the disconnect for the card > reader. What card-reader disconnect? > It seems that both should either be freezable or not freezable. Since > there doesn't currently seem to be any freezable way to wait on a > completion, I started with the simpler approach of making usb-stor-scan > non-freezable. If it would be preferable to make both freezable I can > take that approach instead. I'm not sure what the best approach is. usb-stor-scan has to be freezable, because the scanning code registers new child device structures, which isn't allowed during suspend or hibernation. Alan Stern -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
