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staging: comedi: ni_at_a2150: sample types are unsigned

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Sample values in comedi are generally represented by unsigned values.
Change the type of the `dma_buffer` member of `struct a2150_private`
from `s16 *` to `uint16_t *`, and change the type of the `dpnt` variable
in `a2150_interrupt()` 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 14:40:24 +01:00 committed by Greg Kroah-Hartman
parent ac2832f859
commit 2fb5cd385c
1 changed files with 2 additions and 2 deletions
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4
drivers/staging/comedi/drivers/ni_at_a2150.c
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@ -154,7 +154,7 @@ struct a2150_private {
volatile unsigned int count; /* number of data points left to be taken */ volatile unsigned int count; /* number of data points left to be taken */
unsigned int dma; /* dma channel */ unsigned int dma; /* dma channel */
s16 *dma_buffer; /* dma buffer */ uint16_t *dma_buffer; /* dma buffer */
unsigned int dma_transfer_size; /* size in bytes of dma transfers */ unsigned int dma_transfer_size; /* size in bytes of dma transfers */
int irq_dma_bits; /* irq/dma register bits */ int irq_dma_bits; /* irq/dma register bits */
int config_bits; /* config register bits */ int config_bits; /* config register bits */
@ -192,7 +192,7 @@ static irqreturn_t a2150_interrupt(int irq, void *d)
struct comedi_async *async; struct comedi_async *async;
struct comedi_cmd *cmd; struct comedi_cmd *cmd;
unsigned int max_points, num_points, residue, leftover; unsigned int max_points, num_points, residue, leftover;
short dpnt; unsigned short dpnt;
static const int sample_size = sizeof(devpriv->dma_buffer[0]); static const int sample_size = sizeof(devpriv->dma_buffer[0]);
if (!dev->attached) { if (!dev->attached) {