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USB: root hubs don't lie about their number of TTs

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Currently EHCI root hubs enumerate with a bDeviceProtocol code
indicating that they possess a Transaction Translator.  However the
vast majority of controllers do not; they rely on a companion
controller to handle full- and low-speed communications.  This patch
(as1064) changes the root-hub device descriptor to match the actual
situation.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Alan Stern
2008-04-03 18:02:56 -04:00
committed by Greg Kroah-Hartman
parent 6fc88f53aa
commit 7329e211b9
3 changed files with 14 additions and 2 deletions
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drivers/usb/host/ehci-pci.c
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@@ -130,6 +130,7 @@ static int ehci_pci_setup(struct usb_hcd *hcd)
case PCI_VENDOR_ID_TDI:
if (pdev->device == PCI_DEVICE_ID_TDI_EHCI) {
ehci->is_tdi_rh_tt = 1;
hcd->has_tt = 1;
tdi_reset(ehci);
}
break;