1 files changed, 10 insertions, 11 deletions

diff --git a/drivers/staging/comedi/drivers/ni_at_a2150.c b/drivers/staging/comedi/drivers/ni_at_a2150.c
index 72ec857d073e..69e543a0bf22 100644
--- a/drivers/staging/comedi/drivers/ni_at_a2150.c
+++ b/drivers/staging/comedi/drivers/ni_at_a2150.c
@@ -168,7 +168,6 @@ static irqreturn_t a2150_interrupt(int irq, void *d)
 	struct comedi_cmd *cmd;
 	unsigned int max_points, num_points, residue, leftover;
 	unsigned short dpnt;
-	static const int sample_size = sizeof(devpriv->dma_buffer[0]);
 
 	if (!dev->attached) {
 		dev_err(dev->class_dev, "premature interrupt\n");
@@ -188,14 +187,14 @@ static irqreturn_t a2150_interrupt(int irq, void *d)
 	if (status & OVFL_BIT) {
 		dev_err(dev->class_dev, "fifo overflow\n");
 		async->events |= COMEDI_CB_ERROR | COMEDI_CB_EOA;
-		cfc_handle_events(dev, s);
+		comedi_handle_events(dev, s);
 	}
 
 	if ((status & DMA_TC_BIT) == 0) {
 		dev_err(dev->class_dev,
 			"caught non-dma interrupt?  Aborting.\n");
 		async->events |= COMEDI_CB_ERROR | COMEDI_CB_EOA;
-		cfc_handle_events(dev, s);
+		comedi_handle_events(dev, s);
 		return IRQ_HANDLED;
 	}
 
@@ -206,12 +205,12 @@ static irqreturn_t a2150_interrupt(int irq, void *d)
 	clear_dma_ff(devpriv->dma);
 
 	/*  figure out how many points to read */
-	max_points = devpriv->dma_transfer_size / sample_size;
+	max_points = comedi_bytes_to_samples(s, devpriv->dma_transfer_size);
 	/* residue is the number of points left to be done on the dma
 	 * transfer.  It should always be zero at this point unless
 	 * the stop_src is set to external triggering.
 	 */
-	residue = get_dma_residue(devpriv->dma) / sample_size;
+	residue = comedi_bytes_to_samples(s, get_dma_residue(devpriv->dma));
 	num_points = max_points - residue;
 	if (devpriv->count < num_points && cmd->stop_src == TRIG_COUNT)
 		num_points = devpriv->count;
@@ -219,7 +218,8 @@ static irqreturn_t a2150_interrupt(int irq, void *d)
 	/*  figure out how many points will be stored next time */
 	leftover = 0;
 	if (cmd->stop_src == TRIG_NONE) {
-		leftover = devpriv->dma_transfer_size / sample_size;
+		leftover = comedi_bytes_to_samples(s,
+						   devpriv->dma_transfer_size);
 	} else if (devpriv->count > max_points) {
 		leftover = devpriv->count - max_points;
 		if (leftover > max_points)
@@ -237,7 +237,7 @@ static irqreturn_t a2150_interrupt(int irq, void *d)
 		dpnt = devpriv->dma_buffer[i];
 		/*  convert from 2's complement to unsigned coding */
 		dpnt ^= 0x8000;
-		cfc_write_to_buffer(s, dpnt);
+		comedi_buf_write_samples(s, &dpnt, 1);
 		if (cmd->stop_src == TRIG_COUNT) {
 			if (--devpriv->count == 0) {	/* end of acquisition */
 				async->events |= COMEDI_CB_EOA;
@@ -248,14 +248,13 @@ static irqreturn_t a2150_interrupt(int irq, void *d)
 	/*  re-enable  dma */
 	if (leftover) {
 		set_dma_addr(devpriv->dma, virt_to_bus(devpriv->dma_buffer));
-		set_dma_count(devpriv->dma, leftover * sample_size);
+		set_dma_count(devpriv->dma,
+			      comedi_samples_to_bytes(s, leftover));
 		enable_dma(devpriv->dma);
 	}
 	release_dma_lock(flags);
 
-	async->events |= COMEDI_CB_BLOCK;
-
-	cfc_handle_events(dev, s);
+	comedi_handle_events(dev, s);
 
 	/* clear interrupt */
 	outw(0x00, dev->iobase + DMA_TC_CLEAR_REG);