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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>
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@ -260,6 +260,7 @@ static int appledisplay_probe(struct usb_interface *iface,
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usb_rcvintpipe(udev, int_in_endpointAddr),
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pdata->urbdata, ACD_URB_BUFFER_LEN, appledisplay_complete,
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pdata, 1);
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pdata->urb->transfer_flags = URB_NO_TRANSFER_DMA_MAP;
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if (usb_submit_urb(pdata->urb, GFP_KERNEL)) {
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retval = -EIO;
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dev_err(&iface->dev, "Submitting URB failed\n");
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