usb: appledisplay: Set urb transfer_flags to URB_NO_TRANSFER_DMA_MAP

The driver does allocate a DMA address with usb_alloc_coherent but did
not set the appropriate flag to signal that transfer_dma is set to a
valid value.

Signed-off-by: Alexander Theissen <alex.theissen@me.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/usb/misc/appledisplay.c b/drivers/usb/misc/appledisplay.c
index 85b48c6..730a266 100644 (file)
--- a/drivers/usb/misc/appledisplay.c
+++ b/drivers/usb/misc/appledisplay.c
@@ -260,6 +260,7 @@ static int appledisplay_probe(struct usb_interface *iface,
                usb_rcvintpipe(udev, int_in_endpointAddr),
                pdata->urbdata, ACD_URB_BUFFER_LEN, appledisplay_complete,
                pdata, 1);
+       pdata->urb->transfer_flags = URB_NO_TRANSFER_DMA_MAP;
        if (usb_submit_urb(pdata->urb, GFP_KERNEL)) {
                retval = -EIO;
                dev_err(&iface->dev, "Submitting URB failed\n");