monolith: fix bluetooth dongle

patches/linux/v2-Bluetooth-btusb-Fix-regression-with-CSR-controllers.diff

@@ -0,0 +1,24 @@
+diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c
+index c0b6ef8ee5da..f72218c1037e 100644
+--- a/drivers/bluetooth/btusb.c
++++ b/drivers/bluetooth/btusb.c
+@@ -1366,10 +1366,15 @@ static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
+ 	if (!urb)
+ 		return -ENOMEM;
+ 
+-	/* Use maximum HCI Event size so the USB stack handles
+-	 * ZPL/short-transfer automatically.
+-	 */
+-	size = HCI_MAX_EVENT_SIZE;
++	if (le16_to_cpu(data->udev->descriptor.idVendor)  == 0x0a12 &&
++	    le16_to_cpu(data->udev->descriptor.idProduct) == 0x0001)
++		/* Fake CSR devices don't seem to support sort-transter */
++		size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
++	else
++		/* Use maximum HCI Event size so the USB stack handles
++		 * ZPL/short-transfer automatically.
++		 */
++		size = HCI_MAX_EVENT_SIZE;
+ 
+ 	buf = kmalloc(size, mem_flags);
+ 	if (!buf) {