From david-b@pacbell.net Mon Nov 7 15:37:57 2005 Message-ID: <20051107233442.59301.qmail@web80721.mail.yahoo.com> Date: Mon, 7 Nov 2005 15:34:41 -0800 (PST) From: David Brownell Subject: USB: wakeup flag updates (2/3) uhci-hcd To: greg@kroah.com This makes UHCI stop using the HCD glue wakeup flags to report whether the controller can wake the system. The existing code was wrong anyway; having a PCI PM capability doesn't imply it reports PME# is supported. I skimmed Intel's ICH7 datasheet and that basically says the wakeup signaling gets routed only through ACPI registers. (On the other hand, many VIA chips provide the PCI PM capabilities...) I think that doing this correctly with UHCI is going to require the ACPI folk to associate the /proc/acpi/wakeup identifiers (and wakeup enable/disable flags) with the relevant /sys/devices/pci*/... devices. From: David Brownell Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/uhci-hcd.c | 2 -- 1 file changed, 2 deletions(-) --- gregkh-2.6.orig/drivers/usb/host/uhci-hcd.c +++ gregkh-2.6/drivers/usb/host/uhci-hcd.c @@ -478,8 +478,6 @@ static int uhci_start(struct usb_hcd *hc struct dentry *dentry; hcd->uses_new_polling = 1; - if (pci_find_capability(to_pci_dev(uhci_dev(uhci)), PCI_CAP_ID_PM)) - hcd->can_wakeup = 1; /* Assume it supports PME# */ dentry = debugfs_create_file(hcd->self.bus_name, S_IFREG|S_IRUGO|S_IWUSR, uhci_debugfs_root, uhci,