[PATCH 40/79] staging: comedi: fl512: use comedi_request_region()

H Hartley Sweeten hsweeten at visionengravers.com
Tue Apr 9 23:20:49 UTC 2013


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 at visionengravers.com>
Cc: Ian Abbott <abbotti at mev.co.uk>
Cc: Greg Kroah-Hartman <gregkh at linuxfoundation.org>
---
 drivers/staging/comedi/drivers/fl512.c | 22 ++++------------------
 1 file changed, 4 insertions(+), 18 deletions(-)

diff --git a/drivers/staging/comedi/drivers/fl512.c b/drivers/staging/comedi/drivers/fl512.c
index 07f9d67..bf1c12b 100644
--- a/drivers/staging/comedi/drivers/fl512.c
+++ b/drivers/staging/comedi/drivers/fl512.c
@@ -111,30 +111,18 @@ static int fl512_ao_insn_readback(struct comedi_device *dev,
 static int fl512_attach(struct comedi_device *dev, struct comedi_devconfig *it)
 {
 	struct fl512_private *devpriv;
-	unsigned long iobase;
-	int ret;
-
-	/* pointer to the subdevice: Analog in, Analog out,
-	   (not made ->and Digital IO) */
 	struct comedi_subdevice *s;
+	int ret;
 
-	iobase = it->options[0];
-	printk(KERN_INFO "comedi:%d fl512: 0x%04lx", dev->minor, iobase);
-	if (!request_region(iobase, FL512_SIZE, "fl512")) {
-		printk(KERN_WARNING " I/O port conflict\n");
-		return -EIO;
-	}
-	dev->iobase = iobase;
+	ret = comedi_request_region(dev, it->options[0], FL512_SIZE);
+	if (ret)
+		return ret;
 
 	devpriv = kzalloc(sizeof(*devpriv), GFP_KERNEL);
 	if (!devpriv)
 		return -ENOMEM;
 	dev->private = devpriv;
 
-#if DEBUG
-	printk(KERN_DEBUG "malloc ok\n");
-#endif
-
 	ret = comedi_alloc_subdevices(dev, 2);
 	if (ret)
 		return ret;
@@ -156,7 +144,6 @@ static int fl512_attach(struct comedi_device *dev, struct comedi_devconfig *it)
 	s->range_table = &range_fl512;
 	/* function to call when read AD */
 	s->insn_read = fl512_ai_insn;
-	printk(KERN_INFO "comedi: fl512: subdevice 0 initialized\n");
 
 	/* Analog output */
 	s = &dev->subdevices[1];
@@ -174,7 +161,6 @@ static int fl512_attach(struct comedi_device *dev, struct comedi_devconfig *it)
 	s->insn_write = fl512_ao_insn;
 	/* function to call when reading DA */
 	s->insn_read = fl512_ao_insn_readback;
-	printk(KERN_INFO "comedi: fl512: subdevice 1 initialized\n");
 
 	return 1;
 }
-- 
1.8.1.4




More information about the devel mailing list