On Wed, 18 Apr 2012, Alan Stern wrote: > Tomorrow we can try to figure out the appropriate workaround. Below is a patch that will prevent any PCI device from being put into D3 during suspend. (This is meant to be used without any of the earlier diagnostic patches.) Obviously it's not the final solution; the test in the "if" statement needs to be more discriminating. :-) But before going any farther, I'd like to test if USB wakeup works. So after booting with this patch, make sure that the power/wakeup file says "enabled" in the sysfs path for each controller as well as the usb1, usb2, 1-2, and 2-2 paths under /sys/bus/usb/devices/. Then suspend the computer without using the script, and while it is asleep try plugging in a new USB device. That should cause the computer to wake up, if everything is working properly. Alan Stern Index: usb-3.4/drivers/pci/pci.c =================================================================== --- usb-3.4.orig/drivers/pci/pci.c +++ usb-3.4/drivers/pci/pci.c @@ -1713,6 +1713,8 @@ int pci_prepare_to_sleep(struct pci_dev pci_power_t target_state = pci_target_state(dev); int error; + if (1) + target_state = PCI_D0; if (target_state == PCI_POWER_ERROR) return -EIO; -- 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
