Bluetooth: hci_uart: check the return value of recv()

Check the return value of hu->proto->recv() in hci_uart_tty_receive()
the recv() may return error, check it, not add this to statistics.

Signed-off-by: Jiejing Zhang <jiejing.zhang@freescale.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>

1 files changed, 6 insertions, 1 deletions

diff --git a/drivers/bluetooth/hci_ath.c b/drivers/bluetooth/hci_ath.c
index bd34406faaae..4093935ddf42 100644
--- a/drivers/bluetooth/hci_ath.c
+++ b/drivers/bluetooth/hci_ath.c
@@ -201,8 +201,13 @@ static struct sk_buff *ath_dequeue(struct hci_uart *hu)
 /* Recv data */
 static int ath_recv(struct hci_uart *hu, void *data, int count)
 {
-        if (hci_recv_stream_fragment(hu->hdev, data, count) < 0)
+        int ret;
+
+        ret = hci_recv_stream_fragment(hu->hdev, data, count);
+        if (ret < 0) {
                 BT_ERR("Frame Reassembly Failed");
+                return ret;
+        }
 
         return count;
 }