Instead of container_of, we can populate gpiochip_add_data 's last
parameter and use gpiochip_get_data. It seems to be the standard.

Signed-off-by: Rosen Penev <rosenp@gmail.com>
---
 drivers/staging/greybus/gpio.c | 33 ++++++++++++++-------------------
 1 file changed, 14 insertions(+), 19 deletions(-)

diff --git a/drivers/staging/greybus/gpio.c b/drivers/staging/greybus/gpio.c
index 9b26e148d40f..16bcf7fc8158 100644
--- a/drivers/staging/greybus/gpio.c
+++ b/drivers/staging/greybus/gpio.c
@@ -42,11 +42,6 @@ struct gb_gpio_controller {
 	struct mutex		irq_lock;
 };
 
-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)
 {
 	return d->domain->host_data;
@@ -278,7 +273,7 @@ static void _gb_gpio_irq_set_type(struct gb_gpio_controller *ggc,
 static void gb_gpio_irq_mask(struct irq_data *d)
 {
 	struct gpio_chip *chip = irq_data_to_gpio_chip(d);
-	struct gb_gpio_controller *ggc = gpio_chip_to_gb_gpio_controller(chip);
+	struct gb_gpio_controller *ggc = gpiochip_get_data(chip);
 	struct gb_gpio_line *line = &ggc->lines[d->hwirq];
 
 	line->masked = true;
@@ -288,7 +283,7 @@ static void gb_gpio_irq_mask(struct irq_data *d)
 static void gb_gpio_irq_unmask(struct irq_data *d)
 {
 	struct gpio_chip *chip = irq_data_to_gpio_chip(d);
-	struct gb_gpio_controller *ggc = gpio_chip_to_gb_gpio_controller(chip);
+	struct gb_gpio_controller *ggc = gpiochip_get_data(chip);
 	struct gb_gpio_line *line = &ggc->lines[d->hwirq];
 
 	line->masked = false;
@@ -298,7 +293,7 @@ static void gb_gpio_irq_unmask(struct irq_data *d)
 static int gb_gpio_irq_set_type(struct irq_data *d, unsigned int type)
 {
 	struct gpio_chip *chip = irq_data_to_gpio_chip(d);
-	struct gb_gpio_controller *ggc = gpio_chip_to_gb_gpio_controller(chip);
+	struct gb_gpio_controller *ggc = gpiochip_get_data(chip);
 	struct gb_gpio_line *line = &ggc->lines[d->hwirq];
 	struct device *dev = &ggc->gbphy_dev->dev;
 	u8 irq_type;
@@ -336,7 +331,7 @@ static int gb_gpio_irq_set_type(struct irq_data *d, unsigned int type)
 static void gb_gpio_irq_bus_lock(struct irq_data *d)
 {
 	struct gpio_chip *chip = irq_data_to_gpio_chip(d);
-	struct gb_gpio_controller *ggc = gpio_chip_to_gb_gpio_controller(chip);
+	struct gb_gpio_controller *ggc = gpiochip_get_data(chip);
 
 	mutex_lock(&ggc->irq_lock);
 }
@@ -344,7 +339,7 @@ static void gb_gpio_irq_bus_lock(struct irq_data *d)
 static void gb_gpio_irq_bus_sync_unlock(struct irq_data *d)
 {
 	struct gpio_chip *chip = irq_data_to_gpio_chip(d);
-	struct gb_gpio_controller *ggc = gpio_chip_to_gb_gpio_controller(chip);
+	struct gb_gpio_controller *ggc = gpiochip_get_data(chip);
 	struct gb_gpio_line *line = &ggc->lines[d->hwirq];
 
 	if (line->irq_type_pending) {
@@ -407,21 +402,21 @@ static int gb_gpio_request_handler(struct gb_operation *op)
 
 static int gb_gpio_request(struct gpio_chip *chip, unsigned int offset)
 {
-	struct gb_gpio_controller *ggc = gpio_chip_to_gb_gpio_controller(chip);
+	struct gb_gpio_controller *ggc = gpiochip_get_data(chip);
 
 	return gb_gpio_activate_operation(ggc, (u8)offset);
 }
 
 static void gb_gpio_free(struct gpio_chip *chip, unsigned int offset)
 {
-	struct gb_gpio_controller *ggc = gpio_chip_to_gb_gpio_controller(chip);
+	struct gb_gpio_controller *ggc = gpiochip_get_data(chip);
 
 	gb_gpio_deactivate_operation(ggc, (u8)offset);
 }
 
 static int gb_gpio_get_direction(struct gpio_chip *chip, unsigned int offset)
 {
-	struct gb_gpio_controller *ggc = gpio_chip_to_gb_gpio_controller(chip);
+	struct gb_gpio_controller *ggc = gpiochip_get_data(chip);
 	u8 which;
 	int ret;
 
@@ -435,7 +430,7 @@ static int gb_gpio_get_direction(struct gpio_chip *chip, unsigned int offset)
 
 static int gb_gpio_direction_input(struct gpio_chip *chip, unsigned int offset)
 {
-	struct gb_gpio_controller *ggc = gpio_chip_to_gb_gpio_controller(chip);
+	struct gb_gpio_controller *ggc = gpiochip_get_data(chip);
 
 	return gb_gpio_direction_in_operation(ggc, (u8)offset);
 }
@@ -443,14 +438,14 @@ static int gb_gpio_direction_input(struct gpio_chip *chip, unsigned int offset)
 static int gb_gpio_direction_output(struct gpio_chip *chip, unsigned int offset,
 				    int value)
 {
-	struct gb_gpio_controller *ggc = gpio_chip_to_gb_gpio_controller(chip);
+	struct gb_gpio_controller *ggc = gpiochip_get_data(chip);
 
 	return gb_gpio_direction_out_operation(ggc, (u8)offset, !!value);
 }
 
 static int gb_gpio_get(struct gpio_chip *chip, unsigned int offset)
 {
-	struct gb_gpio_controller *ggc = gpio_chip_to_gb_gpio_controller(chip);
+	struct gb_gpio_controller *ggc = gpiochip_get_data(chip);
 	u8 which;
 	int ret;
 
@@ -464,7 +459,7 @@ static int gb_gpio_get(struct gpio_chip *chip, unsigned int offset)
 
 static void gb_gpio_set(struct gpio_chip *chip, unsigned int offset, int value)
 {
-	struct gb_gpio_controller *ggc = gpio_chip_to_gb_gpio_controller(chip);
+	struct gb_gpio_controller *ggc = gpiochip_get_data(chip);
 
 	gb_gpio_set_value_operation(ggc, (u8)offset, !!value);
 }
@@ -472,7 +467,7 @@ static void gb_gpio_set(struct gpio_chip *chip, unsigned int offset, int value)
 static int gb_gpio_set_config(struct gpio_chip *chip, unsigned int offset,
 			      unsigned long config)
 {
-	struct gb_gpio_controller *ggc = gpio_chip_to_gb_gpio_controller(chip);
+	struct gb_gpio_controller *ggc = gpiochip_get_data(chip);
 	u32 debounce;
 
 	if (pinconf_to_config_param(config) != PIN_CONFIG_INPUT_DEBOUNCE)
@@ -579,7 +574,7 @@ static int gb_gpio_probe(struct gbphy_device *gbphy_dev,
 	if (ret)
 		goto exit_line_free;
 
-	ret = gpiochip_add_data(gpio, NULL);
+	ret = gpiochip_add_data(gpio, ggc);
 	if (ret) {
 		dev_err(&gbphy_dev->dev, "failed to add gpio chip: %d\n", ret);
 		goto exit_line_free;
-- 
2.47.0