Convert 'gpio_chip_to_gb_gpio_controller' from a macro to a static
inline function, to make the relevant types apparent in the
definition and to benefit from the type checking performed by
the compiler at call sites.

Signed-off-by: Sumitra Sharma <sumitraartsy@gmail.com>
---
 drivers/staging/greybus/gpio.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/drivers/staging/greybus/gpio.c b/drivers/staging/greybus/gpio.c
index d729b922a750..2a115a8fc263 100644
--- a/drivers/staging/greybus/gpio.c
+++ b/drivers/staging/greybus/gpio.c
@@ -41,8 +41,11 @@ struct gb_gpio_controller {
 	struct irq_chip		irqc;
 	struct mutex		irq_lock;
 };
-#define gpio_chip_to_gb_gpio_controller(chip) \
-	container_of(chip, struct gb_gpio_controller, chip)
+
+static inline struct gb_gpio_controller *gpio_chip_to_gb_gpio_controller(struct gpio_chip *chip)
+{
+	return container_of(chip, struct gb_gpio_controller, chip);
+}
 
 static struct gpio_chip *irq_data_to_gpio_chip(struct irq_data *d)
 {
-- 
2.25.1