[PATCH] usb: use kobj_to_dev() API

[PATCH] usb: use kobj_to_dev() API

[qiwuchen55]

From: chenqiwu <chenqiwu@xiaomi.com>

Use kobj_to_dev() API instead of container_of().

Signed-off-by: chenqiwu <chenqiwu@xiaomi.com>
---
 drivers/usb/core/sysfs.c  | 6 +++---
 drivers/usb/roles/class.c | 2 +-
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/usb/core/sysfs.c b/drivers/usb/core/sysfs.c
index f19694e..9f4320b 100644
--- a/drivers/usb/core/sysfs.c
+++ b/drivers/usb/core/sysfs.c
@@ -849,7 +849,7 @@ static ssize_t remove_store(struct device *dev, struct device_attribute *attr,
 static umode_t dev_string_attrs_are_visible(struct kobject *kobj,
 		struct attribute *a, int n)
 {
-	struct device *dev = container_of(kobj, struct device, kobj);
+	struct device *dev = kobj_to_dev(kobj);
 	struct usb_device *udev = to_usb_device(dev);
 
 	if (a == &dev_attr_manufacturer.attr) {
@@ -883,7 +883,7 @@ static umode_t dev_string_attrs_are_visible(struct kobject *kobj,
 		struct bin_attribute *attr,
 		char *buf, loff_t off, size_t count)
 {
-	struct device *dev = container_of(kobj, struct device, kobj);
+	struct device *dev = kobj_to_dev(kobj);
 	struct usb_device *udev = to_usb_device(dev);
 	size_t nleft = count;
 	size_t srclen, n;
@@ -1233,7 +1233,7 @@ static ssize_t interface_authorized_store(struct device *dev,
 static umode_t intf_assoc_attrs_are_visible(struct kobject *kobj,
 		struct attribute *a, int n)
 {
-	struct device *dev = container_of(kobj, struct device, kobj);
+	struct device *dev = kobj_to_dev(kobj);
 	struct usb_interface *intf = to_usb_interface(dev);
 
 	if (intf->intf_assoc == NULL)
diff --git a/drivers/usb/roles/class.c b/drivers/usb/roles/class.c
index 63a00ff..486b0b1 100644
--- a/drivers/usb/roles/class.c
+++ b/drivers/usb/roles/class.c
@@ -199,7 +199,7 @@ struct usb_role_switch *
 static umode_t
 usb_role_switch_is_visible(struct kobject *kobj, struct attribute *attr, int n)
 {
-	struct device *dev = container_of(kobj, typeof(*dev), kobj);
+	struct device *dev = kobj_to_dev(kobj);
 	struct usb_role_switch *sw = to_role_switch(dev);
 
 	if (sw->allow_userspace_control)
-- 
1.9.1