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leds-lp55xx: use lp55xx_unregister_leds()

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To unregister led class devices and sysfs attributes,
 LP5521 and LP5523 have each driver function.
 This patch makes both drivers simple using common driver function,
 lp55xx_unregister_leds().

 And some unused variables are removed.

Signed-off-by: Milo(Woogyom) Kim <milo.kim@ti.com>
Signed-off-by: Bryan Wu <cooloney@gmail.com>
This commit is contained in:
Milo(Woogyom) Kim 2013-02-05 19:11:18 +09:00 committed by Bryan Wu
parent a96bfa135d
commit c3a68ebfcd
4 changed files with 22 additions and 45 deletions
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24
drivers/leds/leds-lp5521.c
View File

@ -567,9 +567,6 @@ static ssize_t store_led_pattern(struct device *dev,
return len;
}
static struct attribute_group lp5521_led_attribute_group = {
};
/* device attributes */
static DEVICE_ATTR(engine1_mode, S_IRUGO | S_IWUSR,
show_engine1_mode, store_engine1_mode);
@ -607,25 +604,9 @@ static int lp5521_register_sysfs(struct i2c_client *client)
static void lp5521_unregister_sysfs(struct i2c_client *client)
{
struct lp5521_chip *chip = i2c_get_clientdata(client);
struct device *dev = &client->dev;
int i;
sysfs_remove_group(&dev->kobj, &lp5521_group);
for (i = 0; i < chip->num_leds; i++)
sysfs_remove_group(&chip->leds[i].cdev.dev->kobj,
&lp5521_led_attribute_group);
}
static void lp5521_unregister_leds(struct lp5521_chip *chip)
{
int i;
for (i = 0; i < chip->num_leds; i++) {
led_classdev_unregister(&chip->leds[i].cdev);
cancel_work_sync(&chip->leds[i].brightness_work);
}
}
/* Chip specific configurations */
@ -647,7 +628,6 @@ static struct lp55xx_device_config lp5521_cfg = {
static int lp5521_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
struct lp5521_chip *old_chip = NULL;
int ret;
struct lp55xx_chip *chip;
struct lp55xx_led *led;
@ -692,7 +672,7 @@ static int lp5521_probe(struct i2c_client *client,
}
return ret;
fail2:
lp5521_unregister_leds(old_chip);
lp55xx_unregister_leds(led, chip);
err_register_leds:
lp55xx_deinit_device(chip);
err_init:
@ -708,7 +688,7 @@ static int lp5521_remove(struct i2c_client *client)
lp5521_run_led_pattern(PATTERN_OFF, old_chip);
lp5521_unregister_sysfs(client);
lp5521_unregister_leds(old_chip);
lp55xx_unregister_leds(led, chip);
lp55xx_deinit_device(chip);
return 0;

25
drivers/leds/leds-lp5523.c
View File

@ -609,9 +609,6 @@ store_mode(1)
store_mode(2)
store_mode(3)
static struct attribute_group lp5523_led_attribute_group = {
};
/* device attributes */
static DEVICE_ATTR(engine1_mode, S_IRUGO | S_IWUSR,
show_engine1_mode, store_engine1_mode);
@ -662,15 +659,9 @@ static int lp5523_register_sysfs(struct i2c_client *client)
static void lp5523_unregister_sysfs(struct i2c_client *client)
{
struct lp5523_chip *chip = i2c_get_clientdata(client);
struct device *dev = &client->dev;
int i;
sysfs_remove_group(&dev->kobj, &lp5523_group);
for (i = 0; i < chip->num_leds; i++)
sysfs_remove_group(&chip->leds[i].cdev.dev->kobj,
&lp5523_led_attribute_group);
}
/*--------------------------------------------------------------*/
@ -703,16 +694,6 @@ static void lp5523_set_mode(struct lp5523_engine *engine, u8 mode)
/*--------------------------------------------------------------*/
/* Probe, Attach, Remove */
/*--------------------------------------------------------------*/
static void lp5523_unregister_leds(struct lp5523_chip *chip)
{
int i;
for (i = 0; i < chip->num_leds; i++) {
led_classdev_unregister(&chip->leds[i].cdev);
flush_work(&chip->leds[i].brightness_work);
}
}
/* Chip specific configurations */
static struct lp55xx_device_config lp5523_cfg = {
.reset = {
@ -732,7 +713,6 @@ static struct lp55xx_device_config lp5523_cfg = {
static int lp5523_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
struct lp5523_chip *old_chip = NULL;
int ret;
struct lp55xx_chip *chip;
struct lp55xx_led *led;
@ -777,7 +757,7 @@ static int lp5523_probe(struct i2c_client *client,
}
return ret;
fail2:
lp5523_unregister_leds(old_chip);
lp55xx_unregister_leds(led, chip);
err_register_leds:
lp55xx_deinit_device(chip);
err_init:
@ -786,7 +766,6 @@ err_init:
static int lp5523_remove(struct i2c_client *client)
{
struct lp5523_chip *old_chip = i2c_get_clientdata(client);
struct lp55xx_led *led = i2c_get_clientdata(client);
struct lp55xx_chip *chip = led->chip;
@ -795,7 +774,7 @@ static int lp5523_remove(struct i2c_client *client)
lp5523_unregister_sysfs(client);
lp5523_unregister_leds(old_chip);
lp55xx_unregister_leds(led, chip);
lp55xx_deinit_device(chip);
return 0;

16
drivers/leds/leds-lp55xx-common.c
View File

@ -353,6 +353,22 @@ err_init_led:
}
EXPORT_SYMBOL_GPL(lp55xx_register_leds);
void lp55xx_unregister_leds(struct lp55xx_led *led, struct lp55xx_chip *chip)
{
int i;
struct lp55xx_led *each;
struct kobject *kobj;
for (i = 0; i < chip->num_leds; i++) {
each = led + i;
kobj = &led->cdev.dev->kobj;
sysfs_remove_group(kobj, &lp55xx_led_attr_group);
led_classdev_unregister(&each->cdev);
flush_work(&each->brightness_work);
}
}
EXPORT_SYMBOL_GPL(lp55xx_unregister_leds);
MODULE_AUTHOR("Milo Kim <milo.kim@ti.com>");
MODULE_DESCRIPTION("LP55xx Common Driver");
MODULE_LICENSE("GPL");

2
drivers/leds/leds-lp55xx-common.h
View File

@ -101,4 +101,6 @@ extern void lp55xx_deinit_device(struct lp55xx_chip *chip);
/* common LED class device functions */
extern int lp55xx_register_leds(struct lp55xx_led *led,
struct lp55xx_chip *chip);
extern void lp55xx_unregister_leds(struct lp55xx_led *led,
struct lp55xx_chip *chip);
#endif /* _LEDS_LP55XX_COMMON_H */