staging: comedi: amplc_dio200_common: remove some tests from amplc_dio200_common_detach()

`amplc_dio200_common_detach()` doesn't do much apart from freeing the
IRQ handler that was requested by `amplc_dio200_common_attach()` if
`dev->irq` is non-zero.  There is no need to check if the pointer to
the constant board data or the pointer to private per-device data
exist, so remove those tests.

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

diff --git a/drivers/staging/comedi/drivers/amplc_dio200_common.c b/drivers/staging/comedi/drivers/amplc_dio200_common.c
index 3592e58..4cf9e9e 100644 (file)
--- a/drivers/staging/comedi/drivers/amplc_dio200_common.c
+++ b/drivers/staging/comedi/drivers/amplc_dio200_common.c
@@ -1197,11 +1197,6 @@ EXPORT_SYMBOL_GPL(amplc_dio200_common_attach);
 
 void amplc_dio200_common_detach(struct comedi_device *dev)
 {
-       const struct dio200_board *thisboard = comedi_board(dev);
-       struct dio200_private *devpriv = dev->private;
-
-       if (!thisboard || !devpriv)
-               return;
        if (dev->irq) {
                free_irq(dev->irq, dev);
                dev->irq = 0;