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authorJohan Hovold <jhovold@gmail.com>2013-12-29 19:23:02 +0100
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2014-01-03 12:31:47 -0800
commita6ec8245bf09fd51a0561ff372a12473b48d269b (patch)
tree39ab00b6ce34e424f16f69bc1bdf6b1994af5f08 /drivers/usb/serial
parent362eb02603be7bb835c47f2cf585954a5080449d (diff)
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>
Diffstat (limited to 'drivers/usb/serial')
-rw-r--r--drivers/usb/serial/pl2303.c7
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;
}