From: H Hartley Sweeten <hsweeten@visionengravers.com>
Date: Tue, 9 Apr 2013 23:23:31 +0000 (-0700)
Subject: staging: comedi: mpc624: use comedi_request_region()
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=54573376e8d8fa4762db6c1a35f05d4780e5145d;p=linux-beck.git

staging: comedi: mpc624: 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/mpc624.c b/drivers/staging/comedi/drivers/mpc624.c
index 3b7a53f8a235..8d4527e6d31e 100644
--- a/drivers/staging/comedi/drivers/mpc624.c
+++ b/drivers/staging/comedi/drivers/mpc624.c
@@ -285,17 +285,11 @@ static int mpc624_attach(struct comedi_device *dev, struct comedi_devconfig *it)
 {
 	struct mpc624_private *devpriv;
 	struct comedi_subdevice *s;
-	unsigned long iobase;
 	int ret;
 
-	iobase = it->options[0];
-	printk(KERN_INFO "comedi%d: mpc624 [0x%04lx, ", dev->minor, iobase);
-	if (request_region(iobase, MPC624_SIZE, "mpc624") == NULL) {
-		printk(KERN_ERR "I/O port(s) in use\n");
-		return -EIO;
-	}
-
-	dev->iobase = iobase;
+	ret = comedi_request_region(dev, it->options[0], MPC624_SIZE);
+	if (ret)
+		return ret;
 
 	devpriv = kzalloc(sizeof(*devpriv), GFP_KERNEL);
 	if (!devpriv)
@@ -305,48 +299,35 @@ static int mpc624_attach(struct comedi_device *dev, struct comedi_devconfig *it)
 	switch (it->options[1]) {
 	case 0:
 		devpriv->ulConvertionRate = MPC624_SPEED_3_52_kHz;
-		printk(KERN_INFO "3.52 kHz, ");
 		break;
 	case 1:
 		devpriv->ulConvertionRate = MPC624_SPEED_1_76_kHz;
-		printk(KERN_INFO "1.76 kHz, ");
 		break;
 	case 2:
 		devpriv->ulConvertionRate = MPC624_SPEED_880_Hz;
-		printk(KERN_INFO "880 Hz, ");
 		break;
 	case 3:
 		devpriv->ulConvertionRate = MPC624_SPEED_440_Hz;
-		printk(KERN_INFO "440 Hz, ");
 		break;
 	case 4:
 		devpriv->ulConvertionRate = MPC624_SPEED_220_Hz;
-		printk(KERN_INFO "220 Hz, ");
 		break;
 	case 5:
 		devpriv->ulConvertionRate = MPC624_SPEED_110_Hz;
-		printk(KERN_INFO "110 Hz, ");
 		break;
 	case 6:
 		devpriv->ulConvertionRate = MPC624_SPEED_55_Hz;
-		printk(KERN_INFO "55 Hz, ");
 		break;
 	case 7:
 		devpriv->ulConvertionRate = MPC624_SPEED_27_5_Hz;
-		printk(KERN_INFO "27.5 Hz, ");
 		break;
 	case 8:
 		devpriv->ulConvertionRate = MPC624_SPEED_13_75_Hz;
-		printk(KERN_INFO "13.75 Hz, ");
 		break;
 	case 9:
 		devpriv->ulConvertionRate = MPC624_SPEED_6_875_Hz;
-		printk(KERN_INFO "6.875 Hz, ");
 		break;
 	default:
-		printk
-		    (KERN_ERR "illegal conversion rate setting!"
-			" Valid numbers are 0..9. Using 9 => 6.875 Hz, ");
 		devpriv->ulConvertionRate = MPC624_SPEED_3_52_kHz;
 	}
 
@@ -361,23 +342,18 @@ static int mpc624_attach(struct comedi_device *dev, struct comedi_devconfig *it)
 	switch (it->options[1]) {
 	default:
 		s->maxdata = 0x3FFFFFFF;
-		printk(KERN_INFO "30 bit, ");
 	}
 
 	switch (it->options[1]) {
 	case 0:
 		s->range_table = &range_mpc624_bipolar1;
-		printk(KERN_INFO "1.01V]: ");
 		break;
 	default:
 		s->range_table = &range_mpc624_bipolar10;
-		printk(KERN_INFO "10.1V]: ");
 	}
 	s->len_chanlist = 1;
 	s->insn_read = mpc624_ai_rinsn;
 
-	printk(KERN_INFO "attached\n");
-
 	return 1;
 }