staging: comedi: dt282x: remove 'volatile' on private data variables

As indicated by checkpatch.pl, "WARNING: Use of volatile is usually
wrong: ...". The variables in the private data that are marked
volatile don't need to be. Remove the volatile.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/comedi/drivers/dt282x.c

@@ -330,21 +330,21 @@ struct dt282x_private {
 
 	unsigned short ao[2];
 
-	volatile int dacsr;	/* software copies of registers */
-	volatile int adcsr;
-	volatile int supcsr;
+	int dacsr;	/* software copies of registers */
+	int adcsr;
+	int supcsr;
 
-	volatile int ntrig;
-	volatile int nread;
+	int ntrig;
+	int nread;
 
 	struct {
 		int chan;
 		unsigned short *buf;	/* DMA buffer */
-		volatile int size;	/* size of current transfer */
+		int size;	/* size of current transfer */
 	} dma[2];
 	int dma_maxsize;	/* max size of DMA transfer (in bytes) */
 	int usedma;		/* driver uses DMA              */
-	volatile int current_dma_index;
+	int current_dma_index;
 	int dma_dir;
 };