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| author | Johan Hovold <jhovold@gmail.com> | 2013-12-29 19:23:02 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-01-03 12:31:47 -0800 |
| commit | a6ec8245bf09fd51a0561ff372a12473b48d269b (patch) | |
| tree | 39ab00b6ce34e424f16f69bc1bdf6b1994af5f08 /drivers/usb/serial/pl2303.c | |
| parent | 362eb02603be7bb835c47f2cf585954a5080449d (diff) | |
| download | lwn-a6ec8245bf09fd51a0561ff372a12473b48d269b.tar.gz lwn-a6ec8245bf09fd51a0561ff372a12473b48d269b.zip | |
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/pl2303.c')
| -rw-r--r-- | drivers/usb/serial/pl2303.c | 7 |
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; } |