drm/sysfs: use kobj_to_dev()

Use kobj_to_dev() instead of open-coding it.

Link: http://patchwork.freedesktop.org/patch/msgid/3fea991541fbfc4ffece2c174adeb02cb9436c90.1452696179.git.geliangtang@163.com
Signed-off-by: Geliang Tang <geliangtang@163.com>

diff --git a/drivers/gpu/drm/drm_sysfs.c b/drivers/gpu/drm/drm_sysfs.c
index 0ca64106a97b82500fe4942c9962189bcd6b66c7..d503f8e8c2d1c44cb66fa61ee56c02e7975013f2 100644 (file)
--- a/drivers/gpu/drm/drm_sysfs.c
+++ b/drivers/gpu/drm/drm_sysfs.c
@@ -240,7 +240,7 @@ static ssize_t edid_show(struct file *filp, struct kobject *kobj,
                         struct bin_attribute *attr, char *buf, loff_t off,
                         size_t count)
 {
-       struct device *connector_dev = container_of(kobj, struct device, kobj);
+       struct device *connector_dev = kobj_to_dev(kobj);
        struct drm_connector *connector = to_drm_connector(connector_dev);
        unsigned char *edid;
        size_t size;