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-rw-r--r--drivers/bluetooth/btusb.c13
1 files changed, 9 insertions, 4 deletions
diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c
index 33d655e7d124..e9534fbc92e3 100644
--- a/drivers/bluetooth/btusb.c
+++ b/drivers/bluetooth/btusb.c
@@ -1345,10 +1345,15 @@ 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) {