On Fri, 21 Dec 2012, Frank Schäfer wrote: > Anyway, system still wakes up from S3 immediately. It just occurred to me that not too long ago we learned about a BIOS bug in ASUS systems that affects EHCI controllers during system suspend (the workaround is commit dbf0e4c7257f8d684ec1a3c919853464293de66e; you can look it up if you want). Perhaps the same bug affects OHCI controllers too. It can't hurt to try the test. Does the patch below make any difference? Alan Stern Index: usb-3.7/drivers/pci/pci-driver.c =================================================================== --- usb-3.7.orig/drivers/pci/pci-driver.c +++ usb-3.7/drivers/pci/pci-driver.c @@ -716,7 +716,7 @@ static int pci_pm_suspend_noirq(struct d * Since the value of the COMMAND register doesn't matter once the * device has been suspended, we can safely set it to 0 here. */ - if (pci_dev->class == PCI_CLASS_SERIAL_USB_EHCI) + if ((pci_dev->class >> 8) == PCI_CLASS_SERIAL_USB) pci_write_config_word(pci_dev, PCI_COMMAND, 0); return 0; -- 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
