USB: new quirk flag to avoid Set-Interface

[linux-2.6-omap-h63xx.git] / drivers / usb / core / message.c

diff --git a/drivers/usb/core/message.c b/drivers/usb/core/message.c
index fefb92296e8f5a921edf849a30caf808cf904793..c311f67b7f0824dba591b50d4b21f943827349b0 100644 (file)
--- a/drivers/usb/core/message.c
+++ b/drivers/usb/core/message.c
@@ -1206,7 +1206,10 @@ int usb_set_interface(struct usb_device *dev, int interface, int alternate)
                return -EINVAL;
        }
 
-       ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
+       if (dev->quirks & USB_QUIRK_NO_SET_INTF)
+               ret = -EPIPE;
+       else
+               ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
                                   USB_REQ_SET_INTERFACE, USB_RECIP_INTERFACE,
                                   alternate, interface, NULL, 0, 5000);