`usbdux_detach()` is the Comedi "detach" handler for the usbdux 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()` are probably not
required, especially as the mutex is about to be destroyed, but leave
them alone for now.
Signed-off-by: Ian Abbott <abbotti@xxxxxxxxx>
---
drivers/staging/comedi/drivers/usbdux.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/staging/comedi/drivers/usbdux.c b/drivers/staging/comedi/drivers/usbdux.c
index de177418190f..b8f54b7fb34a 100644
--- a/drivers/staging/comedi/drivers/usbdux.c
+++ b/drivers/staging/comedi/drivers/usbdux.c
@@ -1691,6 +1691,8 @@ static void usbdux_detach(struct comedi_device *dev)
usbdux_free_usb_buffers(dev);
mutex_unlock(&devpriv->mut);
+
+ mutex_destroy(&devpriv->mut);
}
static struct comedi_driver usbdux_driver = {
--
2.20.1
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