1 files changed, 22 insertions, 58 deletions

diff --git a/drivers/staging/comedi/drivers/dmm32at.c b/drivers/staging/comedi/drivers/dmm32at.c
index 4d5c33c4750f..9e2124179a0c 100644
--- a/drivers/staging/comedi/drivers/dmm32at.c
+++ b/drivers/staging/comedi/drivers/dmm32at.c
@@ -158,10 +158,6 @@ static const struct comedi_lrange dmm32at_aoranges = {
 	 }
 };
 
-struct dmm32at_board {
-	const char *name;
-};
-
 struct dmm32at_private {
 
 	int data;
@@ -284,33 +280,25 @@ static int dmm32at_ai_cmdtest(struct comedi_device *dev,
 	if (err)
 		return 2;
 
-	/* step 3: make sure arguments are trivially compatible */
+	/* Step 3: check if arguments are trivially valid */
+
+	err |= cfc_check_trigger_arg_is(&cmd->start_arg, 0);
 
-	if (cmd->start_arg != 0) {
-		cmd->start_arg = 0;
-		err++;
-	}
 #define MAX_SCAN_SPEED	1000000	/* in nanoseconds */
 #define MIN_SCAN_SPEED	1000000000	/* in nanoseconds */
 
 	if (cmd->scan_begin_src == TRIG_TIMER) {
-		if (cmd->scan_begin_arg < MAX_SCAN_SPEED) {
-			cmd->scan_begin_arg = MAX_SCAN_SPEED;
-			err++;
-		}
-		if (cmd->scan_begin_arg > MIN_SCAN_SPEED) {
-			cmd->scan_begin_arg = MIN_SCAN_SPEED;
-			err++;
-		}
+		err |= cfc_check_trigger_arg_min(&cmd->scan_begin_arg,
+						 MAX_SCAN_SPEED);
+		err |= cfc_check_trigger_arg_max(&cmd->scan_begin_arg,
+						 MIN_SCAN_SPEED);
 	} else {
 		/* external trigger */
 		/* should be level/edge, hi/lo specification here */
 		/* should specify multiple external triggers */
-		if (cmd->scan_begin_arg > 9) {
-			cmd->scan_begin_arg = 9;
-			err++;
-		}
+		err |= cfc_check_trigger_arg_max(&cmd->scan_begin_arg, 9);
 	}
+
 	if (cmd->convert_src == TRIG_TIMER) {
 		if (cmd->convert_arg >= 17500)
 			cmd->convert_arg = 20000;
@@ -320,35 +308,20 @@ static int dmm32at_ai_cmdtest(struct comedi_device *dev,
 			cmd->convert_arg = 10000;
 		else
 			cmd->convert_arg = 5000;
-
 	} else {
 		/* external trigger */
 		/* see above */
-		if (cmd->convert_arg > 9) {
-			cmd->convert_arg = 9;
-			err++;
-		}
+		err |= cfc_check_trigger_arg_max(&cmd->convert_arg, 9);
 	}
 
-	if (cmd->scan_end_arg != cmd->chanlist_len) {
-		cmd->scan_end_arg = cmd->chanlist_len;
-		err++;
-	}
+	err |= cfc_check_trigger_arg_is(&cmd->scan_end_arg, cmd->chanlist_len);
+
 	if (cmd->stop_src == TRIG_COUNT) {
-		if (cmd->stop_arg > 0xfffffff0) {
-			cmd->stop_arg = 0xfffffff0;
-			err++;
-		}
-		if (cmd->stop_arg == 0) {
-			cmd->stop_arg = 1;
-			err++;
-		}
+		err |= cfc_check_trigger_arg_max(&cmd->stop_arg, 0xfffffff0);
+		err |= cfc_check_trigger_arg_min(&cmd->stop_arg, 1);
 	} else {
 		/* TRIG_NONE */
-		if (cmd->stop_arg != 0) {
-			cmd->stop_arg = 0;
-			err++;
-		}
+		err |= cfc_check_trigger_arg_is(&cmd->stop_arg, 0);
 	}
 
 	if (err)
@@ -718,7 +691,6 @@ static int dmm32at_dio_insn_config(struct comedi_device *dev,
 static int dmm32at_attach(struct comedi_device *dev,
 			  struct comedi_devconfig *it)
 {
-	const struct dmm32at_board *board = comedi_board(dev);
 	struct dmm32at_private *devpriv;
 	int ret;
 	struct comedi_subdevice *s;
@@ -726,6 +698,8 @@ static int dmm32at_attach(struct comedi_device *dev,
 	unsigned long iobase;
 	unsigned int irq;
 
+	dev->board_name = dev->driver->driver_name;
+
 	iobase = it->options[0];
 	irq = it->options[1];
 
@@ -734,7 +708,7 @@ static int dmm32at_attach(struct comedi_device *dev,
 	       iobase, irq);
 
 	/* register address space */
-	if (!request_region(iobase, DMM32AT_MEMSIZE, board->name)) {
+	if (!request_region(iobase, DMM32AT_MEMSIZE, dev->board_name)) {
 		printk(KERN_ERR "comedi%d: dmm32at: I/O port conflict\n",
 		       dev->minor);
 		return -EIO;
@@ -788,7 +762,7 @@ static int dmm32at_attach(struct comedi_device *dev,
 
 	/* board is there, register interrupt */
 	if (irq) {
-		ret = request_irq(irq, dmm32at_isr, 0, board->name, dev);
+		ret = request_irq(irq, dmm32at_isr, 0, dev->board_name, dev);
 		if (ret < 0) {
 			printk(KERN_ERR "dmm32at: irq conflict\n");
 			return ret;
@@ -796,11 +770,10 @@ static int dmm32at_attach(struct comedi_device *dev,
 		dev->irq = irq;
 	}
 
-	dev->board_name = board->name;
-
-	if (alloc_private(dev, sizeof(*devpriv)) < 0)
+	devpriv = kzalloc(sizeof(*devpriv), GFP_KERNEL);
+	if (!devpriv)
 		return -ENOMEM;
-	devpriv = dev->private;
+	dev->private = devpriv;
 
 	ret = comedi_alloc_subdevices(dev, 3);
 	if (ret)
@@ -867,20 +840,11 @@ static void dmm32at_detach(struct comedi_device *dev)
 		release_region(dev->iobase, DMM32AT_MEMSIZE);
 }
 
-static const struct dmm32at_board dmm32at_boards[] = {
-	{
-		.name		= "dmm32at",
-	},
-};
-
 static struct comedi_driver dmm32at_driver = {
 	.driver_name	= "dmm32at",
 	.module		= THIS_MODULE,
 	.attach		= dmm32at_attach,
 	.detach		= dmm32at_detach,
-	.board_name	= &dmm32at_boards[0].name,
-	.offset		= sizeof(struct dmm32at_board),
-	.num_names	= ARRAY_SIZE(dmm32at_boards),
 };
 module_comedi_driver(dmm32at_driver);