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staging: comedi: adv_pci1710: sample types are unsigned

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Sample values in comedi are generally represented as unsigned values.
Change the element type of the `ao_data[]` member of `struct
pci1710_private` from `short` to `unsigned short` for consistency.  Also
remove the `ai_data` member as it is only assigned to.  Change various
local variables used to hold sample values to `unsigned short`.

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 14:40:10 +01:00 committed by Greg Kroah-Hartman
parent 6cda0d26b1
commit e3a9e513c6
1 changed files with 3 additions and 5 deletions
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8
drivers/staging/comedi/drivers/adv_pci1710.c
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@ -314,10 +314,9 @@ struct pci1710_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;
short ao_data[4]; /* data output buffer */
unsigned short ao_data[4]; /* data output buffer */
unsigned int cnt0_write_wait; /* after a write, wait for update of the
* internal state */
};
@ -736,7 +735,7 @@ static void interrupt_pci1710_every_sample(void *d)
int m;
#ifdef PCI171x_PARANOIDCHECK
const struct boardtype *this_board = comedi_board(dev);
short sampl;
unsigned short sampl;
#endif
m = inw(dev->iobase + PCI171x_STATUS);
@ -817,7 +816,7 @@ static int move_block_from_fifo(struct comedi_device *dev,
int i, j;
#ifdef PCI171x_PARANOIDCHECK
const struct boardtype *this_board = comedi_board(dev);
int sampl;
unsigned short sampl;
#endif
j = s->async->cur_chan;
@ -1122,7 +1121,6 @@ static int pci171x_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;