Staging: comedi: remove C99 comments in pcl816.c

Signed-off-by: Bill Pemberton <wfp5p@virginia.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 129 insertions, 129 deletions

diff --git a/drivers/staging/comedi/drivers/pcl816.c b/drivers/staging/comedi/drivers/pcl816.c
index 515ba74cc7fe..5382adf1dd6a 100644
--- a/drivers/staging/comedi/drivers/pcl816.c
+++ b/drivers/staging/comedi/drivers/pcl816.c
@@ -43,38 +43,38 @@ Configuration Options:
 
 #define DEBUG(x) x
 
-// boards constants
-// IO space len
+/* boards constants */
+/* IO space len */
 #define PCLx1x_RANGE 16
 
-//#define outb(x,y)  printk("OUTB(%x, 200+%d)\n", x,y-0x200); outb(x,y)
+/* #define outb(x,y)  printk("OUTB(%x, 200+%d)\n", x,y-0x200); outb(x,y) */
 
-// INTEL 8254 counters
+/* INTEL 8254 counters */
 #define PCL816_CTR0 4
 #define PCL816_CTR1 5
 #define PCL816_CTR2 6
-// R: counter read-back register W: counter control
+/* R: counter read-back register W: counter control */
 #define PCL816_CTRCTL 7
 
-// R: A/D high byte W: A/D range control
+/* R: A/D high byte W: A/D range control */
 #define PCL816_RANGE 9
-// W: clear INT request
+/* W: clear INT request */
 #define PCL816_CLRINT 10
-// R: next mux scan channel W: mux scan channel & range control pointer
+/* R: next mux scan channel W: mux scan channel & range control pointer */
 #define PCL816_MUX 11
-// R/W: operation control register
+/* R/W: operation control register */
 #define PCL816_CONTROL 12
 
-// R: return status byte  W: set DMA/IRQ
+/* R: return status byte  W: set DMA/IRQ */
 #define PCL816_STATUS 13
 #define PCL816_STATUS_DRDY_MASK 0x80
 
-// R: low byte of A/D W: soft A/D trigger
+/* R: low byte of A/D W: soft A/D trigger */
 #define PCL816_AD_LO 8
-// R: high byte of A/D W: A/D range control
+/* R: high byte of A/D W: A/D range control */
 #define PCL816_AD_HI 9
 
-// type of interrupt handler
+/* type of interrupt handler */
 #define INT_TYPE_AI1_INT 1
 #define INT_TYPE_AI1_DMA 2
 #define INT_TYPE_AI3_INT 4
@@ -83,7 +83,7 @@ Configuration Options:
 #define INT_TYPE_AI1_DMA_RTC 9
 #define INT_TYPE_AI3_DMA_RTC 10
 
-// RTC stuff...
+/* RTC stuff... */
 #define RTC_IRQ 	8
 #define RTC_IO_EXTENT	0x10
 #endif
@@ -103,35 +103,35 @@ static const struct comedi_lrange range_pcl816 = { 8, {
 };
 struct pcl816_board {
 
-	const char *name;	// board name
-	int n_ranges;		// len of range list
-	int n_aichan;		// num of A/D chans in diferencial mode
-	unsigned int ai_ns_min;	// minimal alllowed delay between samples (in ns)
-	int n_aochan;		// num of D/A chans
-	int n_dichan;		// num of DI chans
-	int n_dochan;		// num of DO chans
-	const struct comedi_lrange *ai_range_type;	// default A/D rangelist
-	const struct comedi_lrange *ao_range_type;	// dafault D/A rangelist
-	unsigned int io_range;	// len of IO space
-	unsigned int IRQbits;	// allowed interrupts
-	unsigned int DMAbits;	// allowed DMA chans
-	int ai_maxdata;		// maxdata for A/D
-	int ao_maxdata;		// maxdata for D/A
-	int ai_chanlist;	// allowed len of channel list A/D
-	int ao_chanlist;	// allowed len of channel list D/A
-	int i8254_osc_base;	// 1/frequency of on board oscilator in ns
+	const char *name;	/*  board name */
+	int n_ranges;		/*  len of range list */
+	int n_aichan;		/*  num of A/D chans in diferencial mode */
+	unsigned int ai_ns_min;	/*  minimal alllowed delay between samples (in ns) */
+	int n_aochan;		/*  num of D/A chans */
+	int n_dichan;		/*  num of DI chans */
+	int n_dochan;		/*  num of DO chans */
+	const struct comedi_lrange *ai_range_type;	/*  default A/D rangelist */
+	const struct comedi_lrange *ao_range_type;	/*  dafault D/A rangelist */
+	unsigned int io_range;	/*  len of IO space */
+	unsigned int IRQbits;	/*  allowed interrupts */
+	unsigned int DMAbits;	/*  allowed DMA chans */
+	int ai_maxdata;		/*  maxdata for A/D */
+	int ao_maxdata;		/*  maxdata for D/A */
+	int ai_chanlist;	/*  allowed len of channel list A/D */
+	int ao_chanlist;	/*  allowed len of channel list D/A */
+	int i8254_osc_base;	/*  1/frequency of on board oscilator in ns */
 };
 
 
 static const struct pcl816_board boardtypes[] = {
 	{"pcl816", 8, 16, 10000, 1, 16, 16, &range_pcl816,
 			&range_pcl816, PCLx1x_RANGE,
-			0x00fc,	// IRQ mask
-			0x0a,	// DMA mask
-			0xffff,	// 16-bit card
-			0xffff,	// D/A maxdata
+			0x00fc,	/*  IRQ mask */
+			0x0a,	/*  DMA mask */
+			0xffff,	/*  16-bit card */
+			0xffff,	/*  D/A maxdata */
 			1024,
-			1,	// ao chan list
+			1,	/*  ao chan list */
 		100},
 	{"pcl814b", 8, 16, 10000, 1, 16, 16, &range_pcl816,
 			&range_pcl816, PCLx1x_RANGE,
@@ -170,42 +170,42 @@ COMEDI_INITCLEANUP(driver_pcl816);
 
 struct pcl816_private {
 
-	unsigned int dma;	// used DMA, 0=don't use DMA
-	int dma_rtc;		// 1=RTC used with DMA, 0=no RTC alloc
+	unsigned int dma;	/*  used DMA, 0=don't use DMA */
+	int dma_rtc;		/*  1=RTC used with DMA, 0=no RTC alloc */
 #ifdef unused
-	unsigned long rtc_iobase;	// RTC port region
+	unsigned long rtc_iobase;	/*  RTC port region */
 	unsigned int rtc_iosize;
 	unsigned int rtc_irq;
 #endif
-	unsigned long dmabuf[2];	// pointers to begin of DMA buffers
-	unsigned int dmapages[2];	// len of DMA buffers in PAGE_SIZEs
-	unsigned int hwdmaptr[2];	// hardware address of DMA buffers
-	unsigned int hwdmasize[2];	// len of DMA buffers in Bytes
-	unsigned int dmasamplsize;	// size in samples hwdmasize[0]/2
-	unsigned int last_top_dma;	// DMA pointer in last RTC int
-	int next_dma_buf;	// which DMA buffer will be used next round
-	long dma_runs_to_end;	// how many we must permorm DMA transfer to end of record
-	unsigned long last_dma_run;	// how many bytes we must transfer on last DMA page
-
-	unsigned int ai_scans;	// len of scanlist
-	unsigned char ai_neverending;	// if=1, then we do neverending record (you must use cancel())
-	int irq_free;		// 1=have allocated IRQ
-	int irq_blocked;	// 1=IRQ now uses any subdev
+	unsigned long dmabuf[2];	/*  pointers to begin of DMA buffers */
+	unsigned int dmapages[2];	/*  len of DMA buffers in PAGE_SIZEs */
+	unsigned int hwdmaptr[2];	/*  hardware address of DMA buffers */
+	unsigned int hwdmasize[2];	/*  len of DMA buffers in Bytes */
+	unsigned int dmasamplsize;	/*  size in samples hwdmasize[0]/2 */
+	unsigned int last_top_dma;	/*  DMA pointer in last RTC int */
+	int next_dma_buf;	/*  which DMA buffer will be used next round */
+	long dma_runs_to_end;	/*  how many we must permorm DMA transfer to end of record */
+	unsigned long last_dma_run;	/*  how many bytes we must transfer on last DMA page */
+
+	unsigned int ai_scans;	/*  len of scanlist */
+	unsigned char ai_neverending;	/*  if=1, then we do neverending record (you must use cancel()) */
+	int irq_free;		/*  1=have allocated IRQ */
+	int irq_blocked;	/*  1=IRQ now uses any subdev */
 #ifdef unused
-	int rtc_irq_blocked;	// 1=we now do AI with DMA&RTC
+	int rtc_irq_blocked;	/*  1=we now do AI with DMA&RTC */
 #endif
-	int irq_was_now_closed;	// when IRQ finish, there's stored int816_mode for last interrupt
-	int int816_mode;	// who now uses IRQ - 1=AI1 int, 2=AI1 dma, 3=AI3 int, 4AI3 dma
-	struct comedi_subdevice *last_int_sub;	// ptr to subdevice which now finish
-	int ai_act_scan;	// how many scans we finished
-	unsigned int ai_act_chanlist[16];	// MUX setting for actual AI operations
-	unsigned int ai_act_chanlist_len;	// how long is actual MUX list
-	unsigned int ai_act_chanlist_pos;	// actual position in MUX list
-	unsigned int ai_poll_ptr;	// how many sampes transfer poll
-	struct comedi_subdevice *sub_ai;	// ptr to AI subdevice
+	int irq_was_now_closed;	/*  when IRQ finish, there's stored int816_mode for last interrupt */
+	int int816_mode;	/*  who now uses IRQ - 1=AI1 int, 2=AI1 dma, 3=AI3 int, 4AI3 dma */
+	struct comedi_subdevice *last_int_sub;	/*  ptr to subdevice which now finish */
+	int ai_act_scan;	/*  how many scans we finished */
+	unsigned int ai_act_chanlist[16];	/*  MUX setting for actual AI operations */
+	unsigned int ai_act_chanlist_len;	/*  how long is actual MUX list */
+	unsigned int ai_act_chanlist_pos;	/*  actual position in MUX list */
+	unsigned int ai_poll_ptr;	/*  how many sampes transfer poll */
+	struct comedi_subdevice *sub_ai;	/*  ptr to AI subdevice */
 #ifdef unused
-	struct timer_list rtc_irq_timer;	// timer for RTC sanity check
-	unsigned long rtc_freq;	// RTC int freq
+	struct timer_list rtc_irq_timer;	/*  timer for RTC sanity check */
+	unsigned long rtc_freq;	/*  RTC int freq */
 #endif
 };
 
@@ -237,12 +237,12 @@ static int pcl816_ai_insn_read(struct comedi_device * dev, struct comedi_subdevi
 	int timeout;
 
 	DPRINTK("mode 0 analog input\n");
-	// software trigger, DMA and INT off
+	/*  software trigger, DMA and INT off */
 	outb(0, dev->iobase + PCL816_CONTROL);
-	// clear INT (conversion end) flag
+	/*  clear INT (conversion end) flag */
 	outb(0, dev->iobase + PCL816_CLRINT);
 
-	// Set the input channel
+	/*  Set the input channel */
 	outb(CR_CHAN(insn->chanspec) & 0xf, dev->iobase + PCL816_MUX);
 	outb(CR_RANGE(insn->chanspec), dev->iobase + PCL816_RANGE);	/* select gain */
 
@@ -254,7 +254,7 @@ static int pcl816_ai_insn_read(struct comedi_device * dev, struct comedi_subdevi
 		while (timeout--) {
 			if (!(inb(dev->iobase + PCL816_STATUS) &
 					PCL816_STATUS_DRDY_MASK)) {
-				// return read value
+				/*  return read value */
 				data[n] =
 					((inb(dev->iobase +
 							PCL816_AD_HI) << 8) |
@@ -265,7 +265,7 @@ static int pcl816_ai_insn_read(struct comedi_device * dev, struct comedi_subdevi
 			}
 			comedi_udelay(1);
 		}
-		// Return timeout error
+		/*  Return timeout error */
 		if (!timeout) {
 			comedi_error(dev, "A/D insn timeout\n");
 			data[0] = 0;
@@ -295,7 +295,7 @@ static irqreturn_t interrupt_pcl816_ai_mode13_int(int irq, void *d)
 			break;
 		comedi_udelay(1);
 	}
-	if (!timeout) {		// timeout, bail error
+	if (!timeout) {		/*  timeout, bail error */
 		outb(0, dev->iobase + PCL816_CLRINT);	/* clear INT request */
 		comedi_error(dev, "A/D mode1/3 IRQ without DRDY!");
 		pcl816_ai_cancel(dev, s);
@@ -305,7 +305,7 @@ static irqreturn_t interrupt_pcl816_ai_mode13_int(int irq, void *d)
 
 	}
 
-	// get the sample
+	/*  get the sample */
 	low = inb(dev->iobase + PCL816_AD_LO);
 	hi = inb(dev->iobase + PCL816_AD_HI);
 
@@ -352,7 +352,7 @@ static void transfer_from_dma_buf(struct comedi_device * dev, struct comedi_subd
 		}
 
 		if (!devpriv->ai_neverending)
-			if (devpriv->ai_act_scan >= devpriv->ai_scans) {	// all data sampled
+			if (devpriv->ai_act_scan >= devpriv->ai_scans) {	/*  all data sampled */
 				pcl816_ai_cancel(dev, s);
 				s->async->events |= COMEDI_CB_EOA;
 				s->async->events |= COMEDI_CB_BLOCK;
@@ -374,12 +374,12 @@ static irqreturn_t interrupt_pcl816_ai_mode13_dma(int irq, void *d)
 	disable_dma(devpriv->dma);
 	this_dma_buf = devpriv->next_dma_buf;
 
-	if ((devpriv->dma_runs_to_end > -1) || devpriv->ai_neverending) {	// switch dma bufs
+	if ((devpriv->dma_runs_to_end > -1) || devpriv->ai_neverending) {	/*  switch dma bufs */
 
 		devpriv->next_dma_buf = 1 - devpriv->next_dma_buf;
 		set_dma_mode(devpriv->dma, DMA_MODE_READ);
 		dma_flags = claim_dma_lock();
-//  clear_dma_ff (devpriv->dma);
+/* clear_dma_ff (devpriv->dma); */
 		set_dma_addr(devpriv->dma,
 			devpriv->hwdmaptr[devpriv->next_dma_buf]);
 		if (devpriv->dma_runs_to_end) {
@@ -433,7 +433,7 @@ static irqreturn_t interrupt_pcl816(int irq, void *d PT_REGS_ARG)
 		(!devpriv->int816_mode)) {
 		if (devpriv->irq_was_now_closed) {
 			devpriv->irq_was_now_closed = 0;
-			// comedi_error(dev,"last IRQ..");
+			/*  comedi_error(dev,"last IRQ.."); */
 			return IRQ_HANDLED;
 		}
 		comedi_error(dev, "bad IRQ!");
@@ -610,7 +610,7 @@ static int pcl816_ai_cmd(struct comedi_device * dev, struct comedi_subdevice * s
 		return -EINVAL;
 	if (cmd->scan_end_arg != cmd->chanlist_len)
 		return -EINVAL;
-//      if(cmd->chanlist_len>MAX_CHANLIST_LEN) return -EINVAL;
+/* if(cmd->chanlist_len>MAX_CHANLIST_LEN) return -EINVAL; */
 	if (devpriv->irq_blocked)
 		return -EBUSY;
 
@@ -621,7 +621,7 @@ static int pcl816_ai_cmd(struct comedi_device * dev, struct comedi_subdevice * s
 		i8253_cascade_ns_to_timer(this_board->i8254_osc_base, &divisor1,
 			&divisor2, &cmd->convert_arg,
 			cmd->flags & TRIG_ROUND_MASK);
-		if (divisor1 == 1) {	// PCL816 crash if any divisor is set to 1
+		if (divisor1 == 1) {	/*  PCL816 crash if any divisor is set to 1 */
 			divisor1 = 2;
 			divisor2 /= 2;
 		}
@@ -631,7 +631,7 @@ static int pcl816_ai_cmd(struct comedi_device * dev, struct comedi_subdevice * s
 		}
 	}
 
-	start_pacer(dev, -1, 0, 0);	// stop pacer
+	start_pacer(dev, -1, 0, 0);	/*  stop pacer */
 
 	if (!check_and_setup_channel_list(dev, s, cmd->chanlist,
 			cmd->chanlist_len))
@@ -652,19 +652,19 @@ static int pcl816_ai_cmd(struct comedi_device * dev, struct comedi_subdevice * s
 		devpriv->ai_neverending = 1;
 	}
 
-	if ((cmd->flags & TRIG_WAKE_EOS)) {	// don't we want wake up every scan?
+	if ((cmd->flags & TRIG_WAKE_EOS)) {	/*  don't we want wake up every scan? */
 		printk("pl816: You wankt WAKE_EOS but I dont want handle it");
-		//              devpriv->ai_eos=1;
-		//if (devpriv->ai_n_chan==1)
-		//      devpriv->dma=0; // DMA is useless for this situation
+		/*               devpriv->ai_eos=1; */
+		/* if (devpriv->ai_n_chan==1) */
+		/*       devpriv->dma=0; // DMA is useless for this situation */
 	}
 
 	if (devpriv->dma) {
 		bytes = devpriv->hwdmasize[0];
 		if (!devpriv->ai_neverending) {
-			bytes = s->async->cmd.chanlist_len * s->async->cmd.chanlist_len * sizeof(short);	// how many
-			devpriv->dma_runs_to_end = bytes / devpriv->hwdmasize[0];	// how many DMA pages we must fill
-			devpriv->last_dma_run = bytes % devpriv->hwdmasize[0];	//on last dma transfer must be moved
+			bytes = s->async->cmd.chanlist_len * s->async->cmd.chanlist_len * sizeof(short);	/*  how many */
+			devpriv->dma_runs_to_end = bytes / devpriv->hwdmasize[0];	/*  how many DMA pages we must fill */
+			devpriv->last_dma_run = bytes % devpriv->hwdmasize[0];	/* on last dma transfer must be moved */
 			devpriv->dma_runs_to_end--;
 			if (devpriv->dma_runs_to_end >= 0)
 				bytes = devpriv->hwdmasize[0];
@@ -687,14 +687,14 @@ static int pcl816_ai_cmd(struct comedi_device * dev, struct comedi_subdevice * s
 	switch (cmd->convert_src) {
 	case TRIG_TIMER:
 		devpriv->int816_mode = INT_TYPE_AI1_DMA;
-		outb(0x32, dev->iobase + PCL816_CONTROL);	// Pacer+IRQ+DMA
-		outb(dmairq, dev->iobase + PCL816_STATUS);	// write irq and DMA to card
+		outb(0x32, dev->iobase + PCL816_CONTROL);	/*  Pacer+IRQ+DMA */
+		outb(dmairq, dev->iobase + PCL816_STATUS);	/*  write irq and DMA to card */
 		break;
 
 	default:
 		devpriv->int816_mode = INT_TYPE_AI3_DMA;
-		outb(0x34, dev->iobase + PCL816_CONTROL);	// Ext trig+IRQ+DMA
-		outb(dmairq, dev->iobase + PCL816_STATUS);	// write irq to card
+		outb(0x34, dev->iobase + PCL816_CONTROL);	/*  Ext trig+IRQ+DMA */
+		outb(dmairq, dev->iobase + PCL816_STATUS);	/*  write irq to card */
 		break;
 	}
 
@@ -708,12 +708,12 @@ static int pcl816_ai_poll(struct comedi_device * dev, struct comedi_subdevice *
 	unsigned int top1, top2, i;
 
 	if (!devpriv->dma)
-		return 0;	// poll is valid only for DMA transfer
+		return 0;	/*  poll is valid only for DMA transfer */
 
 	comedi_spin_lock_irqsave(&dev->spinlock, flags);
 
 	for (i = 0; i < 20; i++) {
-		top1 = get_dma_residue(devpriv->dma);	// where is now DMA
+		top1 = get_dma_residue(devpriv->dma);	/*  where is now DMA */
 		top2 = get_dma_residue(devpriv->dma);
 		if (top1 == top2)
 			break;
@@ -723,10 +723,10 @@ static int pcl816_ai_poll(struct comedi_device * dev, struct comedi_subdevice *
 		return 0;
 	}
 
-	top1 = devpriv->hwdmasize[0] - top1;	// where is now DMA in buffer
-	top1 >>= 1;		// sample position
+	top1 = devpriv->hwdmasize[0] - top1;	/*  where is now DMA in buffer */
+	top1 >>= 1;		/*  sample position */
 	top2 = top1 - devpriv->ai_poll_ptr;
-	if (top2 < 1) {		// no new samples
+	if (top2 < 1) {		/*  no new samples */
 		comedi_spin_unlock_irqrestore(&dev->spinlock, flags);
 		return 0;
 	}
@@ -735,7 +735,7 @@ static int pcl816_ai_poll(struct comedi_device * dev, struct comedi_subdevice *
 		(short *) devpriv->dmabuf[devpriv->next_dma_buf],
 		devpriv->ai_poll_ptr, top2);
 
-	devpriv->ai_poll_ptr = top1;	// new buffer position
+	devpriv->ai_poll_ptr = top1;	/*  new buffer position */
 	comedi_spin_unlock_irqrestore(&dev->spinlock, flags);
 
 	return s->async->buf_write_count - s->async->buf_read_count;
@@ -747,14 +747,14 @@ static int pcl816_ai_poll(struct comedi_device * dev, struct comedi_subdevice *
 */
 static int pcl816_ai_cancel(struct comedi_device * dev, struct comedi_subdevice * s)
 {
-//  DEBUG(rt_printk("pcl816_ai_cancel()\n");)
+/* DEBUG(rt_printk("pcl816_ai_cancel()\n");) */
 
 	if (devpriv->irq_blocked > 0) {
 		switch (devpriv->int816_mode) {
 #ifdef unused
 		case INT_TYPE_AI1_DMA_RTC:
 		case INT_TYPE_AI3_DMA_RTC:
-			set_rtc_irq_bit(0);	// stop RTC
+			set_rtc_irq_bit(0);	/*  stop RTC */
 			del_timer(&devpriv->rtc_irq_timer);
 #endif
 		case INT_TYPE_AI1_DMA:
@@ -776,7 +776,7 @@ static int pcl816_ai_cancel(struct comedi_device * dev, struct comedi_subdevice
 			devpriv->irq_was_now_closed = devpriv->int816_mode;
 			devpriv->int816_mode = 0;
 			devpriv->last_int_sub = s;
-//        s->busy = 0;
+/* s->busy = 0; */
 			break;
 		}
 	}
@@ -795,18 +795,18 @@ static int pcl816_check(unsigned long iobase)
 	outb(0x00, iobase + PCL816_MUX);
 	comedi_udelay(1);
 	if (inb(iobase + PCL816_MUX) != 0x00)
-		return 1;	//there isn't card
+		return 1;	/* there isn't card */
 	outb(0x55, iobase + PCL816_MUX);
 	comedi_udelay(1);
 	if (inb(iobase + PCL816_MUX) != 0x55)
-		return 1;	//there isn't card
+		return 1;	/* there isn't card */
 	outb(0x00, iobase + PCL816_MUX);
 	comedi_udelay(1);
 	outb(0x18, iobase + PCL816_CONTROL);
 	comedi_udelay(1);
 	if (inb(iobase + PCL816_CONTROL) != 0x18)
-		return 1;	//there isn't card
-	return 0;		// ok, card exist
+		return 1;	/* there isn't card */
+	return 0;		/*  ok, card exist */
 }
 
 /*
@@ -815,12 +815,12 @@ static int pcl816_check(unsigned long iobase)
 */
 static void pcl816_reset(struct comedi_device * dev)
 {
-//  outb (0, dev->iobase + PCL818_DA_LO);       // DAC=0V
-//  outb (0, dev->iobase + PCL818_DA_HI);
-//  comedi_udelay (1);
-//  outb (0, dev->iobase + PCL818_DO_HI);       // DO=$0000
-//  outb (0, dev->iobase + PCL818_DO_LO);
-//  comedi_udelay (1);
+/* outb (0, dev->iobase + PCL818_DA_LO);         DAC=0V */
+/* outb (0, dev->iobase + PCL818_DA_HI); */
+/* comedi_udelay (1); */
+/* outb (0, dev->iobase + PCL818_DO_HI);        DO=$0000 */
+/* outb (0, dev->iobase + PCL818_DO_LO); */
+/* comedi_udelay (1); */
 	outb(0, dev->iobase + PCL816_CONTROL);
 	outb(0, dev->iobase + PCL816_MUX);
 	outb(0, dev->iobase + PCL816_CLRINT);
@@ -842,8 +842,8 @@ start_pacer(struct comedi_device * dev, int mode, unsigned int divisor1,
 	outb(0xff, dev->iobase + PCL816_CTR0);
 	outb(0x00, dev->iobase + PCL816_CTR0);
 	comedi_udelay(1);
-	outb(0xb4, dev->iobase + PCL816_CTRCTL);	// set counter 2 as mode 3
-	outb(0x74, dev->iobase + PCL816_CTRCTL);	// set counter 1 as mode 3
+	outb(0xb4, dev->iobase + PCL816_CTRCTL);	/*  set counter 2 as mode 3 */
+	outb(0x74, dev->iobase + PCL816_CTRCTL);	/*  set counter 1 as mode 3 */
 	comedi_udelay(1);
 
 	if (mode == 1) {
@@ -856,7 +856,7 @@ start_pacer(struct comedi_device * dev, int mode, unsigned int divisor1,
 	}
 
 	/* clear pending interrupts (just in case) */
-//      outb(0, dev->iobase + PCL816_CLRINT);
+/* outb(0, dev->iobase + PCL816_CLRINT); */
 }
 
 /*
@@ -871,35 +871,35 @@ check_and_setup_channel_list(struct comedi_device * dev, struct comedi_subdevice
 	unsigned int chansegment[16];
 	unsigned int i, nowmustbechan, seglen, segpos;
 
-	// correct channel and range number check itself comedi/range.c
+	/*  correct channel and range number check itself comedi/range.c */
 	if (chanlen < 1) {
 		comedi_error(dev, "range/channel list is empty!");
 		return 0;
 	}
 
 	if (chanlen > 1) {
-		chansegment[0] = chanlist[0];	// first channel is everytime ok
+		chansegment[0] = chanlist[0];	/*  first channel is everytime ok */
 		for (i = 1, seglen = 1; i < chanlen; i++, seglen++) {
-			// build part of chanlist
+			/*  build part of chanlist */
 			DEBUG(rt_printk("%d. %d %d\n", i, CR_CHAN(chanlist[i]),
 					CR_RANGE(chanlist[i]));
 				)
 				if (chanlist[0] == chanlist[i])
-				break;	// we detect loop, this must by finish
+				break;	/*  we detect loop, this must by finish */
 			nowmustbechan =
 				(CR_CHAN(chansegment[i - 1]) + 1) % chanlen;
 			if (nowmustbechan != CR_CHAN(chanlist[i])) {
-				// channel list isn't continous :-(
+				/*  channel list isn't continous :-( */
 				rt_printk
 					("comedi%d: pcl816: channel list must be continous! chanlist[%i]=%d but must be %d or %d!\n",
 					dev->minor, i, CR_CHAN(chanlist[i]),
 					nowmustbechan, CR_CHAN(chanlist[0]));
 				return 0;
 			}
-			chansegment[i] = chanlist[i];	// well, this is next correct channel in list
+			chansegment[i] = chanlist[i];	/*  well, this is next correct channel in list */
 		}
 
-		for (i = 0, segpos = 0; i < chanlen; i++) {	// check whole chanlist
+		for (i = 0, segpos = 0; i < chanlen; i++) {	/*  check whole chanlist */
 			DEBUG(rt_printk("%d %d=%d %d\n",
 					CR_CHAN(chansegment[i % seglen]),
 					CR_RANGE(chansegment[i % seglen]),
@@ -915,7 +915,7 @@ check_and_setup_channel_list(struct comedi_device * dev, struct comedi_subdevice
 					CR_CHAN(chanlist[i % seglen]),
 					CR_RANGE(chanlist[i % seglen]),
 					CR_AREF(chansegment[i % seglen]));
-				return 0;	// chan/gain list is strange
+				return 0;	/*  chan/gain list is strange */
 			}
 		}
 	} else {
@@ -925,7 +925,7 @@ check_and_setup_channel_list(struct comedi_device * dev, struct comedi_subdevice
 	devpriv->ai_act_chanlist_len = seglen;
 	devpriv->ai_act_chanlist_pos = 0;
 
-	for (i = 0; i < seglen; i++) {	// store range list to card
+	for (i = 0; i < seglen; i++) {	/*  store range list to card */
 		devpriv->ai_act_chanlist[i] = CR_CHAN(chanlist[i]);
 		outb(CR_CHAN(chanlist[0]) & 0xf, dev->iobase + PCL816_MUX);
 		outb(CR_RANGE(chanlist[0]), dev->iobase + PCL816_RANGE);	/* select gain */
@@ -935,7 +935,7 @@ check_and_setup_channel_list(struct comedi_device * dev, struct comedi_subdevice
 
 	outb(devpriv->ai_act_chanlist[0] | (devpriv->ai_act_chanlist[seglen - 1] << 4), dev->iobase + PCL816_MUX);	/* select channel interval to scan */
 
-	return 1;		// we can serve this with MUX logic
+	return 1;		/*  we can serve this with MUX logic */
 }
 
 #ifdef unused
@@ -981,7 +981,7 @@ static int set_rtc_irq_bit(unsigned char bit)
 */
 static void free_resources(struct comedi_device * dev)
 {
-	//rt_printk("free_resource()\n");
+	/* rt_printk("free_resource()\n"); */
 	if (dev->private) {
 		pcl816_ai_cancel(dev, devpriv->sub_ai);
 		pcl816_reset(dev);
@@ -1006,7 +1006,7 @@ static void free_resources(struct comedi_device * dev)
 		free_irq(dev->irq, dev);
 	if (dev->iobase)
 		release_region(dev->iobase, this_board->io_range);
-	//rt_printk("free_resource() end\n");
+	/* rt_printk("free_resource() end\n"); */
 }
 
 /*
@@ -1021,7 +1021,7 @@ static int pcl816_attach(struct comedi_device * dev, struct comedi_devconfig * i
 	unsigned long iobase;
 	unsigned int irq, dma;
 	unsigned long pages;
-	//int i;
+	/* int i; */
 	struct comedi_subdevice *s;
 
 	/* claim our I/O space */
@@ -1084,7 +1084,7 @@ static int pcl816_attach(struct comedi_device * dev, struct comedi_devconfig * i
 #ifdef unused
 	/* grab RTC for DMA operations */
 	devpriv->dma_rtc = 0;
-	if (it->options[2] > 0) {	// we want to use DMA
+	if (it->options[2] > 0) {	/*  we want to use DMA */
 		if (RTC_lock == 0) {
 			if (!request_region(RTC_PORT(0), RTC_IO_EXTENT,
 					"pcl816 (RTC)"))
@@ -1152,9 +1152,9 @@ static int pcl816_attach(struct comedi_device * dev, struct comedi_devconfig * i
 		devpriv->dmapages[0] = pages;
 		devpriv->hwdmaptr[0] = virt_to_bus((void *)devpriv->dmabuf[0]);
 		devpriv->hwdmasize[0] = (1 << pages) * PAGE_SIZE;
-		//rt_printk("%d %d %ld, ",devpriv->dmapages[0],devpriv->hwdmasize[0],PAGE_SIZE);
+		/* rt_printk("%d %d %ld, ",devpriv->dmapages[0],devpriv->hwdmasize[0],PAGE_SIZE); */
 
-		if (devpriv->dma_rtc == 0) {	// we must do duble buff :-(
+		if (devpriv->dma_rtc == 0) {	/*  we must do duble buff :-( */
 			devpriv->dmabuf[1] = __get_dma_pages(GFP_KERNEL, pages);
 			if (!devpriv->dmabuf[1]) {
 				rt_printk
@@ -1188,7 +1188,7 @@ static int pcl816_attach(struct comedi_device * dev, struct comedi_devconfig * i
 		s->subdev_flags = SDF_READABLE | SDF_CMD_READ;
 		s->n_chan = this_board->n_aichan;
 		s->subdev_flags |= SDF_DIFF;
-		//printk (", %dchans DIFF DAC - %d", s->n_chan, i);
+		/* printk (", %dchans DIFF DAC - %d", s->n_chan, i); */
 		s->maxdata = this_board->ai_maxdata;
 		s->len_chanlist = this_board->ai_chanlist;
 		s->range_table = this_board->ai_range_type;