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staging: comedi: pcl818: sample types are unsigned

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Sample values in comedi are generally represented as unsigned values.
Change the interrupt data transfer functions in the "pcl818" module to
use unsigned types for consistency.

Also remove the `short *ai_data` member of `struct pcl818_private` as it
is only assigned to and otherwise unused.

Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Ian Abbott 2013-10-16 14:40:31 +01:00 committed by Greg Kroah-Hartman
parent 54d2dd8443
commit 4bf59ce248
1 changed files with 5 additions and 6 deletions
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11
drivers/staging/comedi/drivers/pcl818.c
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@ -289,7 +289,6 @@ struct pcl818_private {
unsigned int *ai_chanlist; /* actaul chanlist */
unsigned int ai_flags; /* flaglist */
unsigned int ai_data_len; /* len of data buffer */
short *ai_data; /* data buffer */
unsigned int ai_timer1; /* timers */
unsigned int ai_timer2;
struct comedi_subdevice *sub_ai; /* ptr to AI subdevice */
@ -443,7 +442,7 @@ static irqreturn_t interrupt_pcl818_ai_mode13_int(int irq, void *d)
struct comedi_device *dev = d;
struct pcl818_private *devpriv = dev->private;
struct comedi_subdevice *s = &dev->subdevices[0];
int low;
unsigned char low;
int timeout = 50; /* wait max 50us */
while (timeout--) {
@ -505,7 +504,7 @@ static irqreturn_t interrupt_pcl818_ai_mode13_dma(int irq, void *d)
struct comedi_subdevice *s = &dev->subdevices[0];
int i, len, bufptr;
unsigned long flags;
short *ptr;
unsigned short *ptr;
disable_dma(devpriv->dma);
devpriv->next_dma_buf = 1 - devpriv->next_dma_buf;
@ -528,7 +527,7 @@ static irqreturn_t interrupt_pcl818_ai_mode13_dma(int irq, void *d)
devpriv->dma_runs_to_end--;
outb(0, dev->iobase + PCL818_CLRINT); /* clear INT request */
ptr = (short *)devpriv->dmabuf[1 - devpriv->next_dma_buf];
ptr = (unsigned short *)devpriv->dmabuf[1 - devpriv->next_dma_buf];
len = devpriv->hwdmasize[0] >> 1;
bufptr = 0;
@ -582,7 +581,8 @@ static irqreturn_t interrupt_pcl818_ai_mode13_fifo(int irq, void *d)
struct comedi_device *dev = d;
struct pcl818_private *devpriv = dev->private;
struct comedi_subdevice *s = &dev->subdevices[0];
int i, len, lo;
int i, len;
unsigned char lo;
outb(0, dev->iobase + PCL818_FI_INTCLR); /* clear fifo int request */
@ -1072,7 +1072,6 @@ static int ai_cmd(struct comedi_device *dev, struct comedi_subdevice *s)
devpriv->ai_chanlist = cmd->chanlist;
devpriv->ai_flags = cmd->flags;
devpriv->ai_data_len = s->async->prealloc_bufsz;
devpriv->ai_data = s->async->prealloc_buf;
devpriv->ai_timer1 = 0;
devpriv->ai_timer2 = 0;