[patch 2/2] Staging: comedi: unlock on error in usbduxsigma_attach()

[Dan Carpenter]

We should release the udev->sem lock before returning.

Signed-off-by: Dan Carpenter <dan.carpenter at oracle.com>

diff --git a/drivers/staging/comedi/drivers/usbduxsigma.c b/drivers/staging/comedi/drivers/usbduxsigma.c
index 0f326ca..47f872d 100644
--- a/drivers/staging/comedi/drivers/usbduxsigma.c
+++ b/drivers/staging/comedi/drivers/usbduxsigma.c
@@ -2692,6 +2692,7 @@ static int usbduxsigma_attach(struct comedi_device *dev,
 	if (ret < 0) {
 		dev_err(&udev->interface->dev,
 			"comedi%d: no space for subdev\n", dev->minor);
+		up(&udev->sem);
 		up(&start_stop_sem);
 		return ret;
 	}