staging: comedi: pcm_common: remove module

This module is built whenever CONFIG_COMEDI is enabled but it is
only used by the pcmmio and pcmuio drivers. The pcm_common module
consists of one exported function. Put a local copy of the function
in the pcmmio and pcmuio drivers.

This removes the need for the pcm_common module and the now unused
pcm_common.[ch] files can be deleted and removed from the Makefile.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/comedi/drivers/Makefile

@@ -2,7 +2,6 @@
 #
 
 # Comedi "helper" modules
-obj-$(CONFIG_COMEDI)			+= pcm_common.o
 
 # Comedi misc drivers
 obj-$(CONFIG_COMEDI_BOND)		+= comedi_bond.o

drivers/staging/comedi/drivers/pcm_common.c

-#include "../comedidev.h"
-
-#include "comedi_fc.h"
-#include "pcm_common.h"
-
-int comedi_pcm_cmdtest(struct comedi_device *dev,
-		       struct comedi_subdevice *s, struct comedi_cmd *cmd)
-{
-	int err = 0;
-
-	/* Step 1 : check if triggers are trivially valid */
-
-	err |= cfc_check_trigger_src(&cmd->start_src, TRIG_NOW | TRIG_INT);
-	err |= cfc_check_trigger_src(&cmd->scan_begin_src, TRIG_EXT);
-	err |= cfc_check_trigger_src(&cmd->convert_src, TRIG_NOW);
-	err |= cfc_check_trigger_src(&cmd->scan_end_src, TRIG_COUNT);
-	err |= cfc_check_trigger_src(&cmd->stop_src, TRIG_COUNT | TRIG_NONE);
-
-	if (err)
-		return 1;
-
-	/* Step 2a : make sure trigger sources are unique */
-
-	err |= cfc_check_trigger_is_unique(cmd->start_src);
-	err |= cfc_check_trigger_is_unique(cmd->stop_src);
-
-	/* Step 2b : and mutually compatible */
-
-	if (err)
-		return 2;
-
-	/* Step 3: check if arguments are trivially valid */
-
-	err |= cfc_check_trigger_arg_is(&cmd->start_arg, 0);
-	err |= cfc_check_trigger_arg_is(&cmd->scan_begin_arg, 0);
-	err |= cfc_check_trigger_arg_is(&cmd->convert_arg, 0);
-	err |= cfc_check_trigger_arg_is(&cmd->scan_end_arg, cmd->chanlist_len);
-
-	switch (cmd->stop_src) {
-	case TRIG_COUNT:
-		/* any count allowed */
-		break;
-	case TRIG_NONE:
-		err |= cfc_check_trigger_arg_is(&cmd->stop_arg, 0);
-		break;
-	default:
-		break;
-	}
-
-	if (err)
-		return 3;
-
-	/* step 4: fix up any arguments */
-
-	/* if (err) return 4; */
-
-	return 0;
-}
-EXPORT_SYMBOL(comedi_pcm_cmdtest);
-
-MODULE_AUTHOR("Comedi http://www.comedi.org");
-MODULE_DESCRIPTION("Comedi low-level driver");
-MODULE_LICENSE("GPL");

drivers/staging/comedi/drivers/pcm_common.h

-#ifndef _comedi_common_H
-#define _comedi_common_H
-
-extern int comedi_pcm_cmdtest(struct comedi_device *dev,
-			      struct comedi_subdevice *s,
-			      struct comedi_cmd *cmd);
-
-#endif

drivers/staging/comedi/drivers/pcmmio.c

@@ -78,9 +78,10 @@ Configuration Options:
 
 #include <linux/interrupt.h>
 #include <linux/slab.h>
+#include <linux/pci.h>
+
 #include "../comedidev.h"
-#include "pcm_common.h"
-#include <linux/pci.h>		/* for PCI devices */
+#include "comedi_fc.h"
 
 /* This stuff is all from pcmuio.c -- it refers to the DIO subdevices only */
 #define CHANS_PER_PORT   8
@@ -802,11 +803,59 @@ static int pcmmio_cmd(struct comedi_device *dev, struct comedi_subdevice *s)
 	return 0;
 }
 
-static int
-pcmmio_cmdtest(struct comedi_device *dev, struct comedi_subdevice *s,
-	       struct comedi_cmd *cmd)
+static int pcmmio_cmdtest(struct comedi_device *dev,
+			  struct comedi_subdevice *s,
+			  struct comedi_cmd *cmd)
 {
-	return comedi_pcm_cmdtest(dev, s, cmd);
+	int err = 0;
+
+	/* Step 1 : check if triggers are trivially valid */
+
+	err |= cfc_check_trigger_src(&cmd->start_src, TRIG_NOW | TRIG_INT);
+	err |= cfc_check_trigger_src(&cmd->scan_begin_src, TRIG_EXT);
+	err |= cfc_check_trigger_src(&cmd->convert_src, TRIG_NOW);
+	err |= cfc_check_trigger_src(&cmd->scan_end_src, TRIG_COUNT);
+	err |= cfc_check_trigger_src(&cmd->stop_src, TRIG_COUNT | TRIG_NONE);
+
+	if (err)
+		return 1;
+
+	/* Step 2a : make sure trigger sources are unique */
+
+	err |= cfc_check_trigger_is_unique(cmd->start_src);
+	err |= cfc_check_trigger_is_unique(cmd->stop_src);
+
+	/* Step 2b : and mutually compatible */
+
+	if (err)
+		return 2;
+
+	/* Step 3: check if arguments are trivially valid */
+
+	err |= cfc_check_trigger_arg_is(&cmd->start_arg, 0);
+	err |= cfc_check_trigger_arg_is(&cmd->scan_begin_arg, 0);
+	err |= cfc_check_trigger_arg_is(&cmd->convert_arg, 0);
+	err |= cfc_check_trigger_arg_is(&cmd->scan_end_arg, cmd->chanlist_len);
+
+	switch (cmd->stop_src) {
+	case TRIG_COUNT:
+		/* any count allowed */
+		break;
+	case TRIG_NONE:
+		err |= cfc_check_trigger_arg_is(&cmd->stop_arg, 0);
+		break;
+	default:
+		break;
+	}
+
+	if (err)
+		return 3;
+
+	/* step 4: fix up any arguments */
+
+	/* if (err) return 4; */
+
+	return 0;
 }
 
 static int adc_wait_ready(unsigned long iobase)

drivers/staging/comedi/drivers/pcmuio.c

@@ -77,10 +77,10 @@ Configuration Options:
 
 #include <linux/interrupt.h>
 #include <linux/slab.h>
-#include "../comedidev.h"
-#include "pcm_common.h"
+#include <linux/pci.h>
 
-#include <linux/pci.h>		/* for PCI devices */
+#include "../comedidev.h"
+#include "comedi_fc.h"
 
 #define CHANS_PER_PORT   8
 #define PORTS_PER_ASIC   6
@@ -740,11 +740,59 @@ static int pcmuio_cmd(struct comedi_device *dev, struct comedi_subdevice *s)
 	return 0;
 }
 
-static int
-pcmuio_cmdtest(struct comedi_device *dev, struct comedi_subdevice *s,
-	       struct comedi_cmd *cmd)
+static int pcmuio_cmdtest(struct comedi_device *dev,
+			  struct comedi_subdevice *s,
+			  struct comedi_cmd *cmd)
 {
-	return comedi_pcm_cmdtest(dev, s, cmd);
+	int err = 0;
+
+	/* Step 1 : check if triggers are trivially valid */
+
+	err |= cfc_check_trigger_src(&cmd->start_src, TRIG_NOW | TRIG_INT);
+	err |= cfc_check_trigger_src(&cmd->scan_begin_src, TRIG_EXT);
+	err |= cfc_check_trigger_src(&cmd->convert_src, TRIG_NOW);
+	err |= cfc_check_trigger_src(&cmd->scan_end_src, TRIG_COUNT);
+	err |= cfc_check_trigger_src(&cmd->stop_src, TRIG_COUNT | TRIG_NONE);
+
+	if (err)
+		return 1;
+
+	/* Step 2a : make sure trigger sources are unique */
+
+	err |= cfc_check_trigger_is_unique(cmd->start_src);
+	err |= cfc_check_trigger_is_unique(cmd->stop_src);
+
+	/* Step 2b : and mutually compatible */
+
+	if (err)
+		return 2;
+
+	/* Step 3: check if arguments are trivially valid */
+
+	err |= cfc_check_trigger_arg_is(&cmd->start_arg, 0);
+	err |= cfc_check_trigger_arg_is(&cmd->scan_begin_arg, 0);
+	err |= cfc_check_trigger_arg_is(&cmd->convert_arg, 0);
+	err |= cfc_check_trigger_arg_is(&cmd->scan_end_arg, cmd->chanlist_len);
+
+	switch (cmd->stop_src) {
+	case TRIG_COUNT:
+		/* any count allowed */
+		break;
+	case TRIG_NONE:
+		err |= cfc_check_trigger_arg_is(&cmd->stop_arg, 0);
+		break;
+	default:
+		break;
+	}
+
+	if (err)
+		return 3;
+
+	/* step 4: fix up any arguments */
+
+	/* if (err) return 4; */
+
+	return 0;
 }
 
 static int pcmuio_attach(struct comedi_device *dev, struct comedi_devconfig *it)