[PATCH v4 2/4] platform/x86: int3472: Use local variable for LED struct access

[Marco Nenciarini <mnencia@kcore.it>]

Introduce a local struct int3472_led pointer in the LED registration
and unregistration functions to avoid repeatedly dereferencing
int3472->led. In the brightness callback, use container_of to get the
int3472_led struct directly instead of going through
int3472_discrete_device.

No functional change.

Signed-off-by: Marco Nenciarini <mnencia@kcore.it>
---
Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
 drivers/platform/x86/intel/int3472/led.c | 43 +++++++++++++-----------
 1 file changed, 23 insertions(+), 20 deletions(-)

diff --git a/drivers/platform/x86/intel/int3472/led.c b/drivers/platform/x86/intel/int3472/led.c
index ccd51f2..efbb02c 100644
--- a/drivers/platform/x86/intel/int3472/led.c
+++ b/drivers/platform/x86/intel/int3472/led.c
@@ -7,54 +7,57 @@
 #include <linux/platform_data/x86/int3472.h>
 
 static int int3472_led_set(struct led_classdev *led_cdev,
-				     enum led_brightness brightness)
+			   enum led_brightness brightness)
 {
-	struct int3472_discrete_device *int3472 =
-		container_of(led_cdev, struct int3472_discrete_device, led.classdev);
+	struct int3472_led *led =
+		container_of(led_cdev, struct int3472_led, classdev);
 
-	gpiod_set_value_cansleep(int3472->led.gpio, brightness);
+	gpiod_set_value_cansleep(led->gpio, brightness);
 	return 0;
 }
 
 int skl_int3472_register_led(struct int3472_discrete_device *int3472, struct gpio_desc *gpio)
 {
+	struct int3472_led *led = &int3472->led;
 	char *p;
 	int ret;
 
-	if (int3472->led.classdev.dev)
+	if (led->classdev.dev)
 		return -EBUSY;
 
-	int3472->led.gpio = gpio;
+	led->gpio = gpio;
 
 	/* Generate the name, replacing the ':' in the ACPI devname with '_' */
-	snprintf(int3472->led.name, sizeof(int3472->led.name),
+	snprintf(led->name, sizeof(led->name),
 		 "%s::privacy_led", acpi_dev_name(int3472->sensor));
-	p = strchr(int3472->led.name, ':');
+	p = strchr(led->name, ':');
 	if (p)
 		*p = '_';
 
-	int3472->led.classdev.name = int3472->led.name;
-	int3472->led.classdev.max_brightness = 1;
-	int3472->led.classdev.brightness_set_blocking = int3472_led_set;
+	led->classdev.name = led->name;
+	led->classdev.max_brightness = 1;
+	led->classdev.brightness_set_blocking = int3472_led_set;
 
-	ret = led_classdev_register(int3472->dev, &int3472->led.classdev);
+	ret = led_classdev_register(int3472->dev, &led->classdev);
 	if (ret)
 		return ret;
 
-	int3472->led.lookup.provider = int3472->led.name;
-	int3472->led.lookup.dev_id = int3472->sensor_name;
-	int3472->led.lookup.con_id = "privacy";
-	led_add_lookup(&int3472->led.lookup);
+	led->lookup.provider = led->name;
+	led->lookup.dev_id = int3472->sensor_name;
+	led->lookup.con_id = "privacy";
+	led_add_lookup(&led->lookup);
 
 	return 0;
 }
 
 void skl_int3472_unregister_led(struct int3472_discrete_device *int3472)
 {
-	if (IS_ERR_OR_NULL(int3472->led.classdev.dev))
+	struct int3472_led *led = &int3472->led;
+
+	if (IS_ERR_OR_NULL(led->classdev.dev))
 		return;
 
-	led_remove_lookup(&int3472->led.lookup);
-	led_classdev_unregister(&int3472->led.classdev);
-	gpiod_put(int3472->led.gpio);
+	led_remove_lookup(&led->lookup);
+	led_classdev_unregister(&led->classdev);
+	gpiod_put(led->gpio);
 }
-- 
2.47.3