thermal: rcar: use parenthesis on macro

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/thermal/rcar_thermal.c b/drivers/thermal/rcar_thermal.c
index 89979ff10e27..47b2b227c91e 100644
--- a/drivers/thermal/rcar_thermal.c
+++ b/drivers/thermal/rcar_thermal.c
@@ -47,7 +47,7 @@ struct rcar_thermal_priv {
 };
 
 #define MCELSIUS(temp)                  ((temp) * 1000)
-#define rcar_zone_to_priv(zone)         (zone->devdata)
+#define rcar_zone_to_priv(zone)         ((zone)->devdata)
 
 /*
  *              basic functions