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staging: comedi: das1800: sample types are unsigned

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Sample values in comedi are generally represented by unsigned values.
Change the type of the `ao_update_bits` member of `struct
das1800_private` and the types of various local variables used to hold
sample values from `short` to `unsigned short` for consistency.

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 14:40:18 +01:00 committed by Greg Kroah-Hartman
parent eabbf3f43f
commit 65a62aaec2
1 changed files with 5 additions and 4 deletions
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9
drivers/staging/comedi/drivers/das1800.c
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@ -438,7 +438,8 @@ struct das1800_private {
uint16_t *dma_current_buf; /* pointer to dma buffer currently being used */
unsigned int dma_transfer_size; /* size of transfer currently used, in bytes */
unsigned long iobase2; /* secondary io address used for analog out on 'ao' boards */
short ao_update_bits; /* remembers the last write to the 'update' dac */
unsigned short ao_update_bits; /* remembers the last write to the
* 'update' dac */
};
/* analog out range for 'ao' boards */
@ -501,7 +502,7 @@ static void das1800_handle_fifo_not_empty(struct comedi_device *dev,
struct comedi_subdevice *s)
{
struct das1800_private *devpriv = dev->private;
short dpnt;
unsigned short dpnt;
int unipolar;
struct comedi_cmd *cmd = &s->async->cmd;
@ -1211,7 +1212,7 @@ static int das1800_ai_rinsn(struct comedi_device *dev,
int i, n;
int chan, range, aref, chan_range;
int timeout = 1000;
short dpnt;
unsigned short dpnt;
int conv_flags = 0;
unsigned long irq_flags;
@ -1276,7 +1277,7 @@ static int das1800_ao_winsn(struct comedi_device *dev,
int chan = CR_CHAN(insn->chanspec);
/* int range = CR_RANGE(insn->chanspec); */
int update_chan = thisboard->ao_n_chan - 1;
short output;
unsigned short output;
unsigned long irq_flags;
/* card expects two's complement data */