staging: comedi: dt3000: sample types are unsigned

Sample values in comedi are generally represented as unsigned values.
Change the type of the `data` variable in `dt3k_ai_empty_fifo()` 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>

diff --git a/drivers/staging/comedi/drivers/dt3000.c b/drivers/staging/comedi/drivers/dt3000.c
index fec911f..292226e 100644 (file)
--- a/drivers/staging/comedi/drivers/dt3000.c
+++ b/drivers/staging/comedi/drivers/dt3000.c
@@ -331,7 +331,7 @@ static void dt3k_ai_empty_fifo(struct comedi_device *dev,
        int rear;
        int count;
        int i;
-       short data;
+       unsigned short data;
 
        front = readw(devpriv->io_addr + DPR_AD_Buf_Front);
        count = front - devpriv->ai_front;