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| author |   Johan Hovold <jhovold@gmail.com> | 2013-03-21 12:37:42 +0100 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-03-25 13:54:31 -0700 |
| commit | 94c51dca2ce9a3dd0c52ec6f57df4fb3e81e3ec7 (patch) | |
| tree | 111fa9a2a12db34e900fc9d7172c093c3cca4f0e /drivers/usb/serial/opticon.c | |
| parent | USB: mos7720: always disable uart on close (diff) | |
| download | linux-dev-94c51dca2ce9a3dd0c52ec6f57df4fb3e81e3ec7.tar.xz linux-dev-94c51dca2ce9a3dd0c52ec6f57df4fb3e81e3ec7.zip | |
USB: opticon: fix return value of tiocmset
Make sure we return 0 or a negative error number appropriate for
userspace on errors.
Currently 1 rather than 0 is returned on successful operation.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/serial/opticon.c')
| -rw-r--r-- | drivers/usb/serial/opticon.c | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/drivers/usb/serial/opticon.c b/drivers/usb/serial/opticon.c index e13e1a4d3e1e..6af5bb810062 100644 --- a/drivers/usb/serial/opticon.c +++ b/drivers/usb/serial/opticon.c @@ -120,7 +120,10 @@ static int send_control_msg(struct usb_serial_port *port, u8 requesttype, 0, 0, buffer, 1, 0); kfree(buffer); - return retval; + if (retval < 0) + return retval; + + return 0; } static int opticon_open(struct tty_struct *tty, struct usb_serial_port *port) @@ -329,10 +332,13 @@ static int opticon_tiocmset(struct tty_struct *tty, /* Send the new RTS state to the connected device */ mutex_lock(&serial->disc_mutex); - if (!serial->disconnected) + if (!serial->disconnected) { ret = send_control_msg(port, CONTROL_RTS, !rts); - else + if (ret) + ret = usb_translate_errors(ret); + } else { ret = -ENODEV; + } mutex_unlock(&serial->disc_mutex); return ret; |