[PATCH v2 3/5] staging: iio: adc: Avoid precedence issues in macro

[Cristian Sicilia]

Enclosing parameter with parenthesis due to avoid
possible precedence issue.

Signed-off-by: Cristian Sicilia <sicilia.cristian at gmail.com>
---
 drivers/staging/iio/adc/ad7280a.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/drivers/staging/iio/adc/ad7280a.c b/drivers/staging/iio/adc/ad7280a.c
index 55b5879..d81a5bd 100644
--- a/drivers/staging/iio/adc/ad7280a.c
+++ b/drivers/staging/iio/adc/ad7280a.c
@@ -97,9 +97,10 @@
 #define AD7280A_NUM_CH			(AD7280A_AUX_ADC_6 - \
 					AD7280A_CELL_VOLTAGE_1 + 1)
 
-#define AD7280A_CALC_VOLTAGE_CHAN_NUM(d, c) ((d * AD7280A_CELLS_PER_DEV) + c)
-#define AD7280A_CALC_TEMP_CHAN_NUM(d, c)    ((d * AD7280A_CELLS_PER_DEV) + \
-					     c - AD7280A_CELLS_PER_DEV)
+#define AD7280A_CALC_VOLTAGE_CHAN_NUM(d, c) (((d) * AD7280A_CELLS_PER_DEV) + \
+					     (c))
+#define AD7280A_CALC_TEMP_CHAN_NUM(d, c)    (((d) * AD7280A_CELLS_PER_DEV) + \
+					     (c) - AD7280A_CELLS_PER_DEV)
 
 #define AD7280A_DEVADDR_MASTER		0
 #define AD7280A_DEVADDR_ALL		0x1F
-- 
2.7.4