staging: comedi: ni_labpc: remove unnecessary private data validation

The labpc_free_dma_chan() function validates the private data. Remove the
unnecessary validation in labpc_datach().

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/staging/comedi/drivers/ni_labpc.c b/drivers/staging/comedi/drivers/ni_labpc.c
index e7b25e8..a916047 100644 (file)
--- a/drivers/staging/comedi/drivers/ni_labpc.c
+++ b/drivers/staging/comedi/drivers/ni_labpc.c
@@ -104,11 +104,7 @@ static int labpc_attach(struct comedi_device *dev, struct comedi_devconfig *it)
 
 static void labpc_detach(struct comedi_device *dev)
 {
-       struct labpc_private *devpriv = dev->private;
-
-       if (devpriv)
-               labpc_free_dma_chan(dev);
-
+       labpc_free_dma_chan(dev);
        comedi_legacy_detach(dev);
 }