[PATCH] imon_raw: respect DMA coherency

[Oliver Neukum <oneukum@xxxxxxxx>]

No buffer can be embedded inside a descriptor, not even a simple be64.
Use a separate kmalloc()

Signed-off-by: Oliver Neukum <oneukum@xxxxxxxx>
---
 drivers/media/rc/imon_raw.c | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/drivers/media/rc/imon_raw.c b/drivers/media/rc/imon_raw.c
index d41580f6e4c7..b7a0c0b34378 100644
--- a/drivers/media/rc/imon_raw.c
+++ b/drivers/media/rc/imon_raw.c
@@ -14,7 +14,7 @@ struct imon {
 	struct device *dev;
 	struct urb *ir_urb;
 	struct rc_dev *rcdev;
-	__be64 ir_buf;
+	__be64 *ir_buf;
 	char phys[64];
 };
 
@@ -137,10 +137,16 @@ static int imon_probe(struct usb_interface *intf,
 	if (!imon->ir_urb)
 		return -ENOMEM;
 
+	imon->ir_buf = kmalloc(sizeof(__be64), GFP_KERNEL);
+	if (!imon->ir_buf) {
+		ret = -ENOMEM;
+		goto free_urb;
+	}
+
 	imon->dev = &intf->dev;
 	usb_fill_int_urb(imon->ir_urb, udev,
 			 usb_rcvintpipe(udev, ir_ep->bEndpointAddress),
-			 &imon->ir_buf, sizeof(imon->ir_buf),
+			 imon->ir_buf, sizeof(__be64),
 			 imon_ir_rx, imon, ir_ep->bInterval);
 
 	rcdev = devm_rc_allocate_device(&intf->dev, RC_DRIVER_IR_RAW);
@@ -177,6 +183,7 @@ static int imon_probe(struct usb_interface *intf,
 
 free_urb:
 	usb_free_urb(imon->ir_urb);
+	kfree(imon->ir_buf);
 	return ret;
 }
 
@@ -186,6 +193,7 @@ static void imon_disconnect(struct usb_interface *intf)
 
 	usb_kill_urb(imon->ir_urb);
 	usb_free_urb(imon->ir_urb);
+	kfree(imon->ir_buf);
 }
 
 static const struct usb_device_id imon_table[] = {
-- 
2.35.3