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Commit 54d2dd84 authored by Ian Abbott's avatar Ian Abbott Committed by Greg Kroah-Hartman
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staging: comedi: pcl816: sample types are unsigned 



Sample values in comedi are generally represented as unsigned values.
Change the "pcl816" module to use unsigned types to handle samples for
consistency.

Signed-off-by: default avatarIan Abbott <abbotti@mev.co.uk>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 8017c513

drivers/staging/comedi/drivers/pcl816.c

+7 −5
Original line number Diff line number Diff line
@@ -229,7 +229,7 @@ static irqreturn_t interrupt_pcl816_ai_mode13_int(int irq, void *d) 
	struct comedi_device *dev = d;

	struct pcl816_private *devpriv = dev->private;

	struct comedi_subdevice *s = &dev->subdevices[0];

	int low, hi;

	unsigned char low, hi;

	int timeout = 50;	/* wait max 50us */



	while (timeout--) {
@@ -281,7 +281,8 @@ static irqreturn_t interrupt_pcl816_ai_mode13_int(int irq, void *d) 
   analog input dma mode 1 & 3, 816 cards

*/

static void transfer_from_dma_buf(struct comedi_device *dev,

				  struct comedi_subdevice *s, short *ptr,

				  struct comedi_subdevice *s,

				  unsigned short *ptr,

				  unsigned int bufptr, unsigned int len)

{

	struct pcl816_private *devpriv = dev->private;
@@ -324,7 +325,7 @@ static irqreturn_t interrupt_pcl816_ai_mode13_dma(int irq, void *d) 
	struct comedi_subdevice *s = &dev->subdevices[0];

	int len, bufptr, this_dma_buf;

	unsigned long dma_flags;

	short *ptr;

	unsigned short *ptr;



	disable_dma(devpriv->dma);

	this_dma_buf = devpriv->next_dma_buf;
@@ -352,7 +353,7 @@ static irqreturn_t interrupt_pcl816_ai_mode13_dma(int irq, void *d) 
	devpriv->dma_runs_to_end--;

	outb(0, dev->iobase + PCL816_CLRINT);	/* clear INT request */



	ptr = (short *)devpriv->dmabuf[this_dma_buf];

	ptr = (unsigned short *)devpriv->dmabuf[this_dma_buf];



	len = (devpriv->hwdmasize[0] >> 1) - devpriv->ai_poll_ptr;

	bufptr = devpriv->ai_poll_ptr;
@@ -665,7 +666,8 @@ static int pcl816_ai_poll(struct comedi_device *dev, struct comedi_subdevice *s) 
	}



	transfer_from_dma_buf(dev, s,

			      (short *)devpriv->dmabuf[devpriv->next_dma_buf],

			      (unsigned short *)devpriv->dmabuf[devpriv->

								next_dma_buf],

			      devpriv->ai_poll_ptr, top2);



	devpriv->ai_poll_ptr = top1;	/*  new buffer position */