staging: comedi: pcl818: 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>

1 files changed, 4 insertions, 13 deletions

diff --git a/drivers/staging/comedi/drivers/pcl818.c b/drivers/staging/comedi/drivers/pcl818.c
index e4df63e2e3f9..6540186753ee 100644
--- a/drivers/staging/comedi/drivers/pcl818.c
+++ b/drivers/staging/comedi/drivers/pcl818.c
@@ -1594,7 +1594,6 @@ static int pcl818_attach(struct comedi_device *dev, struct comedi_devconfig *it)
         const struct pcl818_board *board = comedi_board(dev);
         struct pcl818_private *devpriv;
         int ret;
-        unsigned long iobase;
         unsigned int irq;
         int dma;
         unsigned long pages;
@@ -1605,25 +1604,17 @@ static int pcl818_attach(struct comedi_device *dev, struct comedi_devconfig *it)
                 return -ENOMEM;
         dev->private = devpriv;
 
-        /* claim our I/O space */
-        iobase = it->options[0];
-        printk
-            ("comedi%d: pcl818:  board=%s, ioport=0x%03lx",
-             dev->minor, board->name, iobase);
         devpriv->io_range = board->io_range;
         if ((board->fifo) && (it->options[2] == -1)) {
                 /*  we've board with FIFO and we want to use FIFO */
                 devpriv->io_range = PCLx1xFIFO_RANGE;
                 devpriv->usefifo = 1;
         }
-        if (!request_region(iobase, devpriv->io_range, dev->board_name)) {
-                comedi_error(dev, "I/O port conflict\n");
-                return -EIO;
-        }
-
-        dev->iobase = iobase;
+        ret = comedi_request_region(dev, it->options[0], devpriv->io_range);
+        if (ret)
+                return ret;
 
-        if (pcl818_check(iobase)) {
+        if (pcl818_check(dev->iobase)) {
                 comedi_error(dev, "I can't detect board. FAIL!\n");
                 return -EIO;
         }