mirror of https://gitee.com/openkylin/linux.git
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: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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@ -229,7 +229,7 @@ static irqreturn_t interrupt_pcl816_ai_mode13_int(int irq, void *d)
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struct comedi_device *dev = d;
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struct pcl816_private *devpriv = dev->private;
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struct comedi_subdevice *s = &dev->subdevices[0];
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int low, hi;
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unsigned char low, hi;
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int timeout = 50; /* wait max 50us */
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while (timeout--) {
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@ -281,7 +281,8 @@ static irqreturn_t interrupt_pcl816_ai_mode13_int(int irq, void *d)
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analog input dma mode 1 & 3, 816 cards
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*/
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static void transfer_from_dma_buf(struct comedi_device *dev,
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struct comedi_subdevice *s, short *ptr,
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struct comedi_subdevice *s,
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unsigned short *ptr,
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unsigned int bufptr, unsigned int len)
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{
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struct pcl816_private *devpriv = dev->private;
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@ -324,7 +325,7 @@ static irqreturn_t interrupt_pcl816_ai_mode13_dma(int irq, void *d)
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struct comedi_subdevice *s = &dev->subdevices[0];
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int len, bufptr, this_dma_buf;
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unsigned long dma_flags;
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short *ptr;
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unsigned short *ptr;
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disable_dma(devpriv->dma);
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this_dma_buf = devpriv->next_dma_buf;
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@ -352,7 +353,7 @@ static irqreturn_t interrupt_pcl816_ai_mode13_dma(int irq, void *d)
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devpriv->dma_runs_to_end--;
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outb(0, dev->iobase + PCL816_CLRINT); /* clear INT request */
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ptr = (short *)devpriv->dmabuf[this_dma_buf];
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ptr = (unsigned short *)devpriv->dmabuf[this_dma_buf];
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len = (devpriv->hwdmasize[0] >> 1) - devpriv->ai_poll_ptr;
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bufptr = devpriv->ai_poll_ptr;
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@ -665,7 +666,8 @@ static int pcl816_ai_poll(struct comedi_device *dev, struct comedi_subdevice *s)
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}
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transfer_from_dma_buf(dev, s,
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(short *)devpriv->dmabuf[devpriv->next_dma_buf],
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(unsigned short *)devpriv->dmabuf[devpriv->
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next_dma_buf],
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devpriv->ai_poll_ptr, top2);
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devpriv->ai_poll_ptr = top1; /* new buffer position */
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