Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit baefbc39 authored by David Brownell's avatar David Brownell Committed by Greg Kroah-Hartman
Browse files

[PATCH] USB: wakeup flag updates (2/3) uhci-hcd



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 <dbrownell@users.sourceforge.net>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
parent 0c8624f9
Loading
Loading
Loading
Loading
+0 −2
Original line number Diff line number Diff line
@@ -478,8 +478,6 @@ static int uhci_start(struct usb_hcd *hcd)
	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,