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Commit fc928250 authored by Alek Du's avatar Alek Du Committed by Greg Kroah-Hartman
Browse files

USB: EHCI: Disable langwell/penwell LPM capability 



We have to do so due to HW limitation.

Signed-off-by: default avatarAlek Du <alek.du@intel.com>
Signed-off-by: default avatarAlan Cox <alan@linux.intel.com>
Cc: stable <stable@kernel.org>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
parent 024cfa59

drivers/usb/host/ehci-pci.c

+5 −0
Original line number Diff line number Diff line
@@ -119,6 +119,11 @@ static int ehci_pci_setup(struct usb_hcd *hcd) 
			ehci->broken_periodic = 1;

			ehci_info(ehci, "using broken periodic workaround\n");

		}

		if (pdev->device == 0x0806 || pdev->device == 0x0811

				|| pdev->device == 0x0829) {

			ehci_info(ehci, "disable lpm for langwell/penwell\n");

			ehci->has_lpm = 0;

		}

		break;

	case PCI_VENDOR_ID_TDI:

		if (pdev->device == PCI_DEVICE_ID_TDI_EHCI) {