`usbduxsigma_detach()` is the Comedi "detach" handler for the
usbduxsigma driver. When it is called, the private data for the device
is about to be freed. The private date contains a mutex `devpriv->mut`
that was initialized when the private data was allocated. Call
`mutex_destroy()` to mark it as invalid.
The calls to `mutex_lock()` and `mutex_unlock()` in
`usbduxsigma_detach()` are probably not required, especially as the
mutex is about to be destroyed, but leave them alone for now.
Signed-off-by: Ian Abbott <abbo...@mev.co.uk>
---
drivers/staging/comedi/drivers/usbduxsigma.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/staging/comedi/drivers/usbduxsigma.c
b/drivers/staging/comedi/drivers/usbduxsigma.c
index af5605a875e2..3cc40d2544be 100644
--- a/drivers/staging/comedi/drivers/usbduxsigma.c
+++ b/drivers/staging/comedi/drivers/usbduxsigma.c
@@ -1577,6 +1577,8 @@ static void usbduxsigma_detach(struct comedi_device *dev)
usbduxsigma_free_usb_buffers(dev);
mutex_unlock(&devpriv->mut);
+
+ mutex_destroy(&devpriv->mut);
}
static struct comedi_driver usbduxsigma_driver = {
--
2.20.1
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