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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>
This commit is contained in:
Johan Hovold 2013-12-29 19:23:02 +01:00 committed by Greg Kroah-Hartman
parent 362eb02603
commit a6ec8245bf
1 changed files with 4 additions and 3 deletions
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7
drivers/usb/serial/pl2303.c
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@ -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;
}