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 <jhov...@gmail.com>
---
drivers/usb/serial/opticon.c | 12 +++++++++---
1 file changed, 9 insertions(+), 3 deletions(-)
diff --git a/drivers/usb/serial/opticon.c b/drivers/usb/serial/opticon.c
index e13e1a4..6af5bb8 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;
--
1.8.1.1
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