From: Alexander Theissen <alex.theissen@me.com>
Date: Tue, 4 Dec 2018 22:43:36 +0000 (+0100)
Subject: usb: appledisplay: Set urb transfer_flags to URB_NO_TRANSFER_DMA_MAP
X-Git-Tag: v5.0-rc1~99^2~28
X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=commitdiff_plain;h=67f3a0d0ad7220b9c37b5e6722a821cd7f389b39;p=linux.git

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 85b48c6ddc7e..730a266cd7b9 100644
--- 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");