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>
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@ -201,8 +201,13 @@ static struct sk_buff *ath_dequeue(struct hci_uart *hu)
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/* Recv data */
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/* Recv data */
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static int ath_recv(struct hci_uart *hu, void *data, int count)
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static int ath_recv(struct hci_uart *hu, void *data, int count)
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{
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{
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if (hci_recv_stream_fragment(hu->hdev, data, count) < 0)
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int ret;
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ret = hci_recv_stream_fragment(hu->hdev, data, count);
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if (ret < 0) {
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BT_ERR("Frame Reassembly Failed");
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BT_ERR("Frame Reassembly Failed");
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return ret;
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}
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return count;
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return count;
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}
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}
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@ -359,6 +359,7 @@ static void hci_uart_tty_wakeup(struct tty_struct *tty)
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*/
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*/
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static void hci_uart_tty_receive(struct tty_struct *tty, const u8 *data, char *flags, int count)
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static void hci_uart_tty_receive(struct tty_struct *tty, const u8 *data, char *flags, int count)
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{
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{
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int ret;
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struct hci_uart *hu = (void *)tty->disc_data;
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struct hci_uart *hu = (void *)tty->disc_data;
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if (!hu || tty != hu->tty)
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if (!hu || tty != hu->tty)
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@ -368,8 +369,9 @@ static void hci_uart_tty_receive(struct tty_struct *tty, const u8 *data, char *f
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return;
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return;
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spin_lock(&hu->rx_lock);
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spin_lock(&hu->rx_lock);
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hu->proto->recv(hu, (void *) data, count);
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ret = hu->proto->recv(hu, (void *) data, count);
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hu->hdev->stat.byte_rx += count;
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if (ret > 0)
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hu->hdev->stat.byte_rx += count;
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spin_unlock(&hu->rx_lock);
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spin_unlock(&hu->rx_lock);
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tty_unthrottle(tty);
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tty_unthrottle(tty);
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