staging: comedi: addi_apci_3120: sample types are unsigned

Sample values in comedi are generally represented as unsigned values.
Change the element type of `ul_DmaBufferVirtual[2]` in `struct
addi_private` from `short *` to `unsigned short *` for consistency.
Note that several ADDI-DATA drivers use this struct from
"addi_common.h", but only the "addi_apci_3120" driver uses this member.
Also change the type of the `dma_buffer` parameter of
`v_APCI3120_InterruptDmaMoveBlock16bit()` from `short *` to `unsigned
short *`.

Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/staging/comedi/drivers/addi-data/addi_common.h b/drivers/staging/comedi/drivers/addi-data/addi_common.h
index dfd1e66..2ed2da3 100644 (file)
--- a/drivers/staging/comedi/drivers/addi-data/addi_common.h
+++ b/drivers/staging/comedi/drivers/addi-data/addi_common.h
@@ -133,7 +133,7 @@ struct addi_private {
        unsigned short us_UseDma;       /*  To use Dma or not */
        unsigned char b_DmaDoubleBuffer;        /*  we can use double buffering */
        unsigned int ui_DmaActualBuffer;        /*  which buffer is used now */
-       short *ul_DmaBufferVirtual[2];  /*  pointers to begin of DMA buffer */
+       unsigned short *ul_DmaBufferVirtual[2]; /*  pointers to DMA buffer */
        unsigned int ul_DmaBufferHw[2]; /*  hw address of DMA buff */
        unsigned int ui_DmaBufferSize[2];       /*  size of dma buffer in bytes */
        unsigned int ui_DmaBufferUsesize[2];    /*  which size we may now used for transfer */

diff --git a/drivers/staging/comedi/drivers/addi-data/hwdrv_apci3120.c b/drivers/staging/comedi/drivers/addi-data/hwdrv_apci3120.c
index ac6e75d..3c9eec8 100644 (file)
--- a/drivers/staging/comedi/drivers/addi-data/hwdrv_apci3120.c
+++ b/drivers/staging/comedi/drivers/addi-data/hwdrv_apci3120.c
@@ -1391,7 +1391,7 @@ static int i_APCI3120_CommandAnalogInput(struct comedi_device *dev,
  */
 static void v_APCI3120_InterruptDmaMoveBlock16bit(struct comedi_device *dev,
                                                  struct comedi_subdevice *s,
-                                                 short *dma_buffer,
+                                                 unsigned short *dma_buffer,
                                                  unsigned int num_samples)
 {
        struct addi_private *devpriv = dev->private;