drivers/video/backlight/88pm860x_bl.c: add missing of_node_put()

of_find_node_by_name() returns a node pointer with refcount incremented,
use of_node_put() on it when done.

of_find_node_by_name() will call of_node_put() against the node pass to
from parameter, thus we also need to call of_node_get(from) before calling
of_find_node_by_name().

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Cc: Jingoo Han <jg1.han@samsung.com>
Cc: Haojian Zhuang <haojian.zhuang@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/drivers/video/backlight/88pm860x_bl.c b/drivers/video/backlight/88pm860x_bl.c
index c072ed9..2cd6350 100644 (file)
--- a/drivers/video/backlight/88pm860x_bl.c
+++ b/drivers/video/backlight/88pm860x_bl.c
@@ -165,8 +165,10 @@ static int pm860x_backlight_dt_init(struct platform_device *pdev,
                                    struct pm860x_backlight_data *data,
                                    char *name)
 {
-       struct device_node *nproot = pdev->dev.parent->of_node, *np;
+       struct device_node *nproot, *np;
        int iset = 0;
+
+       nproot = of_node_get(pdev->dev.parent->of_node);
        if (!nproot)
                return -ENODEV;
        nproot = of_find_node_by_name(nproot, "backlights");
@@ -184,6 +186,7 @@ static int pm860x_backlight_dt_init(struct platform_device *pdev,
                        break;
                }
        }
+       of_node_put(nproot);
        return 0;
 }
 #else