staging: comedi: amplc_pci224: sample types are unsigned

Sample values in comedi are generally represented as unsigned values.
Change the type of the `ao_scan_vals` member of `struct pci224_private`
from `short *` to `unsigned short *` for consistency.  Also change the
type of the `array` variable in `pci224_ao_munge()` 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/amplc_pci224.c b/drivers/staging/comedi/drivers/amplc_pci224.c
index cf385b8..810e397 100644 (file)
--- a/drivers/staging/comedi/drivers/amplc_pci224.c
+++ b/drivers/staging/comedi/drivers/amplc_pci224.c
@@ -373,7 +373,7 @@ struct pci224_private {
        unsigned long state;
        spinlock_t ao_spinlock;
        unsigned int *ao_readback;
-       short *ao_scan_vals;
+       unsigned short *ao_scan_vals;
        unsigned char *ao_scan_order;
        int intr_cpuid;
        short intr_running;
@@ -1112,7 +1112,7 @@ pci224_ao_munge(struct comedi_device *dev, struct comedi_subdevice *s,
        const struct pci224_board *thisboard = comedi_board(dev);
        struct pci224_private *devpriv = dev->private;
        struct comedi_async *async = s->async;
-       short *array = data;
+       unsigned short *array = data;
        unsigned int length = num_bytes / sizeof(*array);
        unsigned int offset;
        unsigned int shift;