USB: pl2303: add error handling to set_control_lines

Add error handling to set_control_lines.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 4 insertions, 3 deletions

diff --git a/drivers/usb/serial/pl2303.c b/drivers/usb/serial/pl2303.c
index 4058ceec884d..1fe8545e9926 100644
--- a/drivers/usb/serial/pl2303.c
+++ b/drivers/usb/serial/pl2303.c
@@ -269,12 +269,13 @@ static int pl2303_set_control_lines(struct usb_serial_port *port, u8 value)
         struct usb_device *dev = port->serial->dev;
         int retval;
 
+        dev_dbg(&port->dev, "%s - %02x\n", __func__, value);
+
         retval = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
                                  SET_CONTROL_REQUEST, SET_CONTROL_REQUEST_TYPE,
                                  value, 0, NULL, 0, 100);
-
-        dev_dbg(&port->dev, "%s - value = %d, retval = %d\n", __func__,
-                value, retval);
+        if (retval)
+                dev_err(&port->dev, "%s - failed: %d\n", __func__, retval);
 
         return retval;
 }