leds-lp55xx: add new function for removing device attribtues

 lp55xx_unregister_sysfs() is used for removing lp55xx device attributes.
 Chip specific and engine attributes are removed on unloading the driver.

Signed-off-by: Milo(Woogyom) Kim <milo.kim@ti.com>
Signed-off-by: Bryan Wu <cooloney@gmail.com>

2 files changed, 13 insertions, 0 deletions

diff --git a/drivers/leds/leds-lp55xx-common.c b/drivers/leds/leds-lp55xx-common.c
index 9638ad4dc635..782ab84fe65f 100644
--- a/drivers/leds/leds-lp55xx-common.c
+++ b/drivers/leds/leds-lp55xx-common.c
@@ -509,6 +509,18 @@ dev_specific_attrs:
 }
 EXPORT_SYMBOL_GPL(lp55xx_register_sysfs);
 
+void lp55xx_unregister_sysfs(struct lp55xx_chip *chip)
+{
+        struct device *dev = &chip->cl->dev;
+        struct lp55xx_device_config *cfg = chip->cfg;
+
+        if (cfg->dev_attr_group)
+                sysfs_remove_group(&dev->kobj, cfg->dev_attr_group);
+
+        sysfs_remove_group(&dev->kobj, &lp55xx_engine_attr_group);
+}
+EXPORT_SYMBOL_GPL(lp55xx_unregister_sysfs);
+
 MODULE_AUTHOR("Milo Kim <milo.kim@ti.com>");
 MODULE_DESCRIPTION("LP55xx Common Driver");
 MODULE_LICENSE("GPL");
diff --git a/drivers/leds/leds-lp55xx-common.h b/drivers/leds/leds-lp55xx-common.h
index 64eb78da1c4b..ece4761a1302 100644
--- a/drivers/leds/leds-lp55xx-common.h
+++ b/drivers/leds/leds-lp55xx-common.h
@@ -129,5 +129,6 @@ extern void lp55xx_unregister_leds(struct lp55xx_led *led,
 
 /* common device attributes functions */
 extern int lp55xx_register_sysfs(struct lp55xx_chip *chip);
+extern void lp55xx_unregister_sysfs(struct lp55xx_chip *chip);
 
 #endif /* _LEDS_LP55XX_COMMON_H */