On 2012-06-22 08:14, Dan Carpenter wrote:
There was a double unlock introduced in 60ff461067 ("staging: comedi:
usbduxsigma: use attach_usb() hook").

Signed-off-by: Dan Carpenter <[email protected]>

diff --git a/drivers/staging/comedi/drivers/usbduxsigma.c 
b/drivers/staging/comedi/drivers/usbduxsigma.c
index 28f41e9..015b0d0 100644
--- a/drivers/staging/comedi/drivers/usbduxsigma.c
+++ b/drivers/staging/comedi/drivers/usbduxsigma.c
@@ -2781,7 +2781,6 @@ static int usbduxsigma_attach(struct comedi_device *dev,
        if (index < 0) {
                dev_err(dev->class_dev,
                        "usbduxsigma: error: attach failed, dev not connected to the 
usb bus.\n");
-               up(&start_stop_sem);
                ret = -ENODEV;
        } else
                ret = usbduxsigma_attach_common(dev, &usbduxsub[index],

Oops, I must have missed that one!

Acked-by: Ian Abbott <[email protected]>

--
-=( Ian Abbott @ MEV Ltd.    E-mail: <[email protected]>        )=-
-=( Tel: +44 (0)161 477 1898   FAX: +44 (0)161 718 3587         )=-


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