staging: comedi: ni_tio_internal.h: replace NITIO_Gi_Interrupt_Enable_Reg()

The "Interrupt Enable" registers are sequential in the enum ni_gpct_register.
Replace this inline CamelCase function with a simple define.
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/ni_tio.c

@@ -416,7 +416,7 @@ void ni_tio_init_counter(struct ni_gpct *counter)
 			NITIO_DMA_CFG_REG(counter->counter_index), ~0,
 			0x0);
 	ni_tio_set_bits(counter,
-			NITIO_Gi_Interrupt_Enable_Reg(counter->counter_index),
+			NITIO_INT_ENA_REG(counter->counter_index),
 			~0, 0x0);
 }
 EXPORT_SYMBOL_GPL(ni_tio_init_counter);

drivers/staging/comedi/drivers/ni_tio_internal.h

@@ -39,21 +39,7 @@
 #define NITIO_ABZ_REG(x)		(NITIO_G0_ABZ + (x))
 #define NITIO_INT_ACK_REG(x)		(NITIO_G0_INT_ACK + (x))
 #define NITIO_STATUS_REG(x)		(NITIO_G0_STATUS + (x))
-
-static inline enum ni_gpct_register NITIO_Gi_Interrupt_Enable_Reg(unsigned idx)
-{
-	switch (idx) {
-	case 0:
-		return NITIO_G0_INT_ENA;
-	case 1:
-		return NITIO_G1_INT_ENA;
-	case 2:
-		return NITIO_G2_INT_ENA;
-	case 3:
-		return NITIO_G3_INT_ENA;
-	}
-	return 0;
-}
+#define NITIO_INT_ENA_REG(x)		(NITIO_G0_INT_ENA + (x))
 
 enum Gi_Auto_Increment_Reg_Bits {
 	Gi_Auto_Increment_Mask = 0xff

drivers/staging/comedi/drivers/ni_tiocmd.c

@@ -200,7 +200,7 @@ static int ni_tio_cmd_setup(struct ni_gpct *counter, struct comedi_async *async)
 		retval = ni_tio_set_gate_src(counter, 0, gate_source);
 	if (cmd->flags & TRIG_WAKE_EOS) {
 		ni_tio_set_bits(counter,
-				NITIO_Gi_Interrupt_Enable_Reg(counter->
+				NITIO_INT_ENA_REG(counter->
 							      counter_index),
 				Gi_Gate_Interrupt_Enable_Bit(counter->
 							     counter_index),
@@ -311,7 +311,7 @@ int ni_tio_cancel(struct ni_gpct *counter)
 	ni_tio_configure_dma(counter, 0, 0);
 
 	ni_tio_set_bits(counter,
-			NITIO_Gi_Interrupt_Enable_Reg(counter->counter_index),
+			NITIO_INT_ENA_REG(counter->counter_index),
 			Gi_Gate_Interrupt_Enable_Bit(counter->counter_index),
 			0x0);
 	return 0;