staging: comedi: ampcl_dio200: use comedi_request_region()

Use comedi_request_region() to request the I/O region used by this
driver.

Remove the noise when the board is first attached as well as the
error message when the request_region() fails, comedi_request_reqion()
will output the error message if necessary.

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

diff --git a/drivers/staging/comedi/drivers/amplc_dio200.c b/drivers/staging/comedi/drivers/amplc_dio200.c
index 1d1f2fe..dc35cc9 100644 (file)
--- a/drivers/staging/comedi/drivers/amplc_dio200.c
+++ b/drivers/staging/comedi/drivers/amplc_dio200.c
@@ -268,44 +268,24 @@ static const struct dio200_board dio200_isa_boards[] = {
        },
 };
 
-/*
- * This function checks and requests an I/O region, reporting an error
- * if there is a conflict.
- */
-static int
-dio200_request_region(struct comedi_device *dev,
-                     unsigned long from, unsigned long extent)
-{
-       if (!from || !request_region(from, extent, dev->board_name)) {
-               dev_err(dev->class_dev, "I/O port conflict (%#lx,%lu)!\n",
-                       from, extent);
-               return -EIO;
-       }
-       return 0;
-}
-
 static int dio200_attach(struct comedi_device *dev, struct comedi_devconfig *it)
 {
        const struct dio200_board *thisboard = comedi_board(dev);
        struct dio200_private *devpriv;
-       unsigned long iobase;
        unsigned int irq;
        int ret;
 
-       iobase = it->options[0];
        irq = it->options[1];
-       dev_info(dev->class_dev, "%s: attach %s 0x%lX,%u\n",
-                dev->driver->driver_name, dev->board_name, iobase, irq);
 
        devpriv = kzalloc(sizeof(*devpriv), GFP_KERNEL);
        if (!devpriv)
                return -ENOMEM;
        dev->private = devpriv;
 
-       ret = dio200_request_region(dev, iobase, thisboard->mainsize);
-       if (ret < 0)
+       ret = comedi_request_region(dev, it->options[0], thisboard->mainsize);
+       if (ret)
                return ret;
-       devpriv->io.u.iobase = iobase;
+       devpriv->io.u.iobase = dev->iobase;
        devpriv->io.regtype = io_regtype;
        return amplc_dio200_common_attach(dev, irq, 0);
 }