From: H Hartley Sweeten <hsweeten@visionengravers.com>
Date: Tue, 9 Apr 2013 23:18:44 +0000 (-0700)
Subject: staging: comedi: dt2814: use comedi_request_region()
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=c5c18cd3661e57ef09b545570dac891c53b981e4;p=linux-beck.git

staging: comedi: dt2814: 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/dt2814.c b/drivers/staging/comedi/drivers/dt2814.c
index e4d629e6d06e..46dca8e8a8a1 100644
--- a/drivers/staging/comedi/drivers/dt2814.c
+++ b/drivers/staging/comedi/drivers/dt2814.c
@@ -246,15 +246,10 @@ static int dt2814_attach(struct comedi_device *dev, struct comedi_devconfig *it)
 	int i, irq;
 	int ret;
 	struct comedi_subdevice *s;
-	unsigned long iobase;
 
-	iobase = it->options[0];
-	printk(KERN_INFO "comedi%d: dt2814: 0x%04lx ", dev->minor, iobase);
-	if (!request_region(iobase, DT2814_SIZE, "dt2814")) {
-		printk(KERN_ERR "I/O port conflict\n");
-		return -EIO;
-	}
-	dev->iobase = iobase;
+	ret = comedi_request_region(dev, it->options[0], DT2814_SIZE);
+	if (ret)
+		return ret;
 
 	outb(0, dev->iobase + DT2814_CSR);
 	udelay(100);