---

yaml --- r: 364877 b: refs/heads/master c: 2c992cd h: refs/heads/master i: 364875: 15246f6 v: v3
git-mirror · Apr 19, 2013 · 8e49285 · 8e49285
1 parent 2f09792
commit 8e49285
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Showing 2 changed files with 9 additions and 1 deletion.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: b5784f7d8528926d69c5868f1ddb2af99f85e799
+refs/heads/master: 2c992cd73772bd0ef107536e8e3399d28493caa8
diff --git a/trunk/drivers/usb/serial/ti_usb_3410_5052.c b/trunk/drivers/usb/serial/ti_usb_3410_5052.c
@@ -687,6 +687,8 @@ static int ti_chars_in_buffer(struct tty_struct *tty)
 	struct ti_port *tport = usb_get_serial_port_data(port);
 	int chars = 0;
 	unsigned long flags;
+	int ret;
+	u8 lsr;
 
 	if (tport == NULL)
 		return 0;
@@ -695,6 +697,12 @@ static int ti_chars_in_buffer(struct tty_struct *tty)
 	chars = kfifo_len(&tport->write_fifo);
 	spin_unlock_irqrestore(&tport->tp_lock, flags);
 
+	if (!chars) {
+		ret = ti_get_lsr(tport, &lsr);
+		if (!ret && !(lsr & TI_LSR_TX_EMPTY))
+			chars = 1;
+	}
+
 	dev_dbg(&port->dev, "%s - returns %d\n", __func__, chars);
 	return chars;
 }