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path: root/drivers/bluetooth/hci_ldisc.c
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Diffstat (limited to 'drivers/bluetooth/hci_ldisc.c')
-rw-r--r--drivers/bluetooth/hci_ldisc.c13
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/bluetooth/hci_ldisc.c b/drivers/bluetooth/hci_ldisc.c
index 8950e07889fe..85a30fb9177b 100644
--- a/drivers/bluetooth/hci_ldisc.c
+++ b/drivers/bluetooth/hci_ldisc.c
@@ -292,6 +292,19 @@ static int hci_uart_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
return 0;
}
+/* Check the underlying device or tty has flow control support */
+bool hci_uart_has_flow_control(struct hci_uart *hu)
+{
+ /* serdev nodes check if the needed operations are present */
+ if (hu->serdev)
+ return true;
+
+ if (hu->tty->driver->ops->tiocmget && hu->tty->driver->ops->tiocmset)
+ return true;
+
+ return false;
+}
+
/* Flow control or un-flow control the device */
void hci_uart_set_flow_control(struct hci_uart *hu, bool enable)
{