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USB: EHCI: Disable langwell/penwell LPM capability 

We have to do so due to HW limitation.

Signed-off-by: Alek Du <alek.du@intel.com>
Signed-off-by: Alan Cox <alan@linux.intel.com>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Alek Du 2010-09-06 14:50:57 +01:00 committed by Greg Kroah-Hartman
parent 024cfa5943
commit fc92825061
1 changed files with 5 additions and 0 deletions
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5
drivers/usb/host/ehci-pci.c
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@ -119,6 +119,11 @@ static int ehci_pci_setup(struct usb_hcd *hcd)
ehci->broken_periodic = 1; ehci->broken_periodic = 1;
ehci_info(ehci, "using broken periodic workaround\n"); 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; break;
case PCI_VENDOR_ID_TDI: case PCI_VENDOR_ID_TDI:
if (pdev->device == PCI_DEVICE_ID_TDI_EHCI) { if (pdev->device == PCI_DEVICE_ID_TDI_EHCI) {