usb: use kobj_to_dev() API

Use kobj_to_dev() API instead of container_of().

Signed-off-by: chenqiwu <chenqiwu@xiaomi.com>
Link: https://lore.kernel.org/r/1581683820-9978-1-git-send-email-qiwuchen55@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/usb/core/sysfs.c b/drivers/usb/core/sysfs.c
index f19694e..9f4320b 100644 (file)
--- a/drivers/usb/core/sysfs.c
+++ b/drivers/usb/core/sysfs.c
@@ -849,7 +849,7 @@ static struct attribute *dev_string_attrs[] = {
 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 @@ read_descriptors(struct file *filp, 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 struct attribute *intf_assoc_attrs[] = {
 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 (file)
--- a/drivers/usb/roles/class.c
+++ b/drivers/usb/roles/class.c
@@ -199,7 +199,7 @@ EXPORT_SYMBOL_GPL(usb_role_switch_find_by_fwnode);
 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)