staging: comedi: dt2811: 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, 3 insertions, 11 deletions

diff --git a/drivers/staging/comedi/drivers/dt2811.c b/drivers/staging/comedi/drivers/dt2811.c
index be9aaa7e42c6..16cbd540ab31 100644
--- a/drivers/staging/comedi/drivers/dt2811.c
+++ b/drivers/staging/comedi/drivers/dt2811.c
@@ -399,18 +399,10 @@ static int dt2811_attach(struct comedi_device *dev, struct comedi_devconfig *it)
         struct dt2811_private *devpriv;
         int ret;
         struct comedi_subdevice *s;
-        unsigned long iobase;
 
-        iobase = it->options[0];
-
-        printk(KERN_INFO "comedi%d: dt2811:base=0x%04lx\n", dev->minor, iobase);
-
-        if (!request_region(iobase, DT2811_SIZE, dev->board_name)) {
-                printk(KERN_ERR "I/O port conflict\n");
-                return -EIO;
-        }
-
-        dev->iobase = iobase;
+        ret = comedi_request_region(dev, it->options[0], DT2811_SIZE);
+        if (ret)
+                return ret;
 
 #if 0
         outb(0, dev->iobase + DT2811_ADCSR);