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

Remove the default iobase address (0x300) that is used when the user
does not pass a base address during the "comedi_config". Comedi
legacy drivers should only attach to a specified address.

Remove the dev_err() message when the request_region() fails,
comedi_request_reqion() will output the error message if necessary.

Signed-off-by: H Hartley Sweeten <[email protected]>
Cc: Ian Abbott <[email protected]>
Cc: Greg Kroah-Hartman <[email protected]>
---
 drivers/staging/comedi/drivers/das6402.c | 15 +++------------
 1 file changed, 3 insertions(+), 12 deletions(-)

diff --git a/drivers/staging/comedi/drivers/das6402.c 
b/drivers/staging/comedi/drivers/das6402.c
index c2f20c2..431dd22 100644
--- a/drivers/staging/comedi/drivers/das6402.c
+++ b/drivers/staging/comedi/drivers/das6402.c
@@ -284,21 +284,12 @@ static int das6402_attach(struct comedi_device *dev,
 {
        struct das6402_private *devpriv;
        unsigned int irq;
-       unsigned long iobase;
        int ret;
        struct comedi_subdevice *s;
 
-       iobase = it->options[0];
-       if (iobase == 0)
-               iobase = 0x300;
-
-       if (!request_region(iobase, DAS6402_SIZE, "das6402")) {
-               dev_err(dev->class_dev, "I/O port conflict\n");
-               return -EIO;
-       }
-       dev->iobase = iobase;
-
-       /* should do a probe here */
+       ret = comedi_request_region(dev, it->options[0], DAS6402_SIZE);
+       if (ret)
+               return ret;
 
        irq = it->options[0];
        dev_dbg(dev->class_dev, "( irq = %u )\n", irq);
-- 
1.8.1.4

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