leds: el15203000: Introduce to_el15203000_led() helper

Introduce a helper to replace open coded container_of() calls.
At the same time move ldev member to be first in the struct el15203000_led,
that makes container_of() effectivelly a no-op.

Signed-off-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>

diff --git a/drivers/leds/leds-el15203000.c b/drivers/leds/leds-el15203000.c
index 6ca47f2..c82f5d1 100644 (file)
--- a/drivers/leds/leds-el15203000.c
+++ b/drivers/leds/leds-el15203000.c
@@ -68,8 +68,8 @@ enum el15203000_command {
 };
 
 struct el15203000_led {
-       struct el15203000       *priv;
        struct led_classdev     ldev;
+       struct el15203000       *priv;
        u32                     reg;
 };
 
@@ -82,6 +82,8 @@ struct el15203000 {
        struct el15203000_led   leds[];
 };
 
+#define to_el15203000_led(d)   container_of(d, struct el15203000_led, ldev)
+
 static int el15203000_cmd(struct el15203000_led *led, u8 brightness)
 {
        int             ret;
@@ -128,9 +130,7 @@ static int el15203000_cmd(struct el15203000_led *led, u8 brightness)
 static int el15203000_set_blocking(struct led_classdev *ldev,
                                   enum led_brightness brightness)
 {
-       struct el15203000_led *led = container_of(ldev,
-                                                 struct el15203000_led,
-                                                 ldev);
+       struct el15203000_led *led = to_el15203000_led(ldev);
 
        return el15203000_cmd(led, brightness == LED_OFF ? EL_OFF : EL_ON);
 }
@@ -139,9 +139,7 @@ static int el15203000_pattern_set_S(struct led_classdev *ldev,
                                    struct led_pattern *pattern,
                                    u32 len, int repeat)
 {
-       struct el15203000_led *led = container_of(ldev,
-                                                 struct el15203000_led,
-                                                 ldev);
+       struct el15203000_led *led = to_el15203000_led(ldev);
 
        if (repeat > 0 || len != 2 ||
            pattern[0].delta_t != 4000 || pattern[0].brightness != 0 ||
@@ -192,10 +190,8 @@ static int el15203000_pattern_set_P(struct led_classdev *ldev,
                                    struct led_pattern *pattern,
                                    u32 len, int repeat)
 {
+       struct el15203000_led   *led = to_el15203000_led(ldev);
        u8                      cmd;
-       struct el15203000_led   *led = container_of(ldev,
-                                                   struct el15203000_led,
-                                                   ldev);
 
        if (repeat > 0)
                return -EINVAL;
@@ -232,9 +228,7 @@ static int el15203000_pattern_set_P(struct led_classdev *ldev,
 
 static int el15203000_pattern_clear(struct led_classdev *ldev)
 {
-       struct el15203000_led   *led = container_of(ldev,
-                                                   struct el15203000_led,
-                                                   ldev);
+       struct el15203000_led *led = to_el15203000_led(ldev);
 
        return el15203000_cmd(led, EL_OFF);
 }