Add error handling to set_control_lines.
Signed-off-by: Johan Hovold <jhov...@gmail.com>
---
drivers/usb/serial/pl2303.c | 7 ++++---
1 file 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;
}
--
1.8.3.2
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