HID: use kobj_to_dev()

Use kobj_to_dev() instead of open-coding it.
Signed-off-by: NGeliang Tang <geliangtang@163.com>
Signed-off-by: NJiri Kosina <jkosina@suse.cz>

drivers/hid/hid-core.c

@@ -1571,7 +1571,7 @@ read_report_descriptor(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 hid_device *hdev = to_hid_device(dev);
 
 	if (off >= hdev->rsize)

drivers/hid/hid-roccat-arvo.c

@@ -191,8 +191,7 @@ static ssize_t arvo_sysfs_write(struct file *fp,
 		struct kobject *kobj, void const *buf,
 		loff_t off, size_t count, size_t real_size, uint command)
 {
-	struct device *dev =
-			container_of(kobj, struct device, kobj)->parent->parent;
+	struct device *dev = kobj_to_dev(kobj)->parent->parent;
 	struct arvo_device *arvo = hid_get_drvdata(dev_get_drvdata(dev));
 	struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
 	int retval;
@@ -211,8 +210,7 @@ static ssize_t arvo_sysfs_read(struct file *fp,
 		struct kobject *kobj, void *buf, loff_t off,
 		size_t count, size_t real_size, uint command)
 {
-	struct device *dev =
-			container_of(kobj, struct device, kobj)->parent->parent;
+	struct device *dev = kobj_to_dev(kobj)->parent->parent;
 	struct arvo_device *arvo = hid_get_drvdata(dev_get_drvdata(dev));
 	struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
 	int retval;

drivers/hid/hid-roccat-common.c

@@ -134,8 +134,7 @@ ssize_t roccat_common2_sysfs_read(struct file *fp, struct kobject *kobj,
 		char *buf, loff_t off, size_t count,
 		size_t real_size, uint command)
 {
-	struct device *dev =
-			container_of(kobj, struct device, kobj)->parent->parent;
+	struct device *dev = kobj_to_dev(kobj)->parent->parent;
 	struct roccat_common2_device *roccat_dev = hid_get_drvdata(dev_get_drvdata(dev));
 	struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
 	int retval;
@@ -158,8 +157,7 @@ ssize_t roccat_common2_sysfs_write(struct file *fp, struct kobject *kobj,
 		void const *buf, loff_t off, size_t count,
 		size_t real_size, uint command)
 {
-	struct device *dev =
-			container_of(kobj, struct device, kobj)->parent->parent;
+	struct device *dev = kobj_to_dev(kobj)->parent->parent;
 	struct roccat_common2_device *roccat_dev = hid_get_drvdata(dev_get_drvdata(dev));
 	struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
 	int retval;

drivers/hid/hid-roccat-isku.c

@@ -121,8 +121,7 @@ static ssize_t isku_sysfs_read(struct file *fp, struct kobject *kobj,
 		char *buf, loff_t off, size_t count,
 		size_t real_size, uint command)
 {
-	struct device *dev =
-			container_of(kobj, struct device, kobj)->parent->parent;
+	struct device *dev = kobj_to_dev(kobj)->parent->parent;
 	struct isku_device *isku = hid_get_drvdata(dev_get_drvdata(dev));
 	struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
 	int retval;
@@ -144,8 +143,7 @@ static ssize_t isku_sysfs_write(struct file *fp, struct kobject *kobj,
 		void const *buf, loff_t off, size_t count,
 		size_t real_size, uint command)
 {
-	struct device *dev =
-			container_of(kobj, struct device, kobj)->parent->parent;
+	struct device *dev = kobj_to_dev(kobj)->parent->parent;
 	struct isku_device *isku = hid_get_drvdata(dev_get_drvdata(dev));
 	struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
 	int retval;

drivers/hid/hid-roccat-kone.c

@@ -269,8 +269,7 @@ static int kone_get_firmware_version(struct usb_device *usb_dev, int *result)
 static ssize_t kone_sysfs_read_settings(struct file *fp, struct kobject *kobj,
 		struct bin_attribute *attr, char *buf,
 		loff_t off, size_t count) {
-	struct device *dev =
-			container_of(kobj, struct device, kobj)->parent->parent;
+	struct device *dev = kobj_to_dev(kobj)->parent->parent;
 	struct kone_device *kone = hid_get_drvdata(dev_get_drvdata(dev));
 
 	if (off >= sizeof(struct kone_settings))
@@ -294,8 +293,7 @@ static ssize_t kone_sysfs_read_settings(struct file *fp, struct kobject *kobj,
 static ssize_t kone_sysfs_write_settings(struct file *fp, struct kobject *kobj,
 		struct bin_attribute *attr, char *buf,
 		loff_t off, size_t count) {
-	struct device *dev =
-			container_of(kobj, struct device, kobj)->parent->parent;
+	struct device *dev = kobj_to_dev(kobj)->parent->parent;
 	struct kone_device *kone = hid_get_drvdata(dev_get_drvdata(dev));
 	struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
 	int retval = 0, difference, old_profile;
@@ -332,8 +330,7 @@ static BIN_ATTR(settings, 0660, kone_sysfs_read_settings,
 static ssize_t kone_sysfs_read_profilex(struct file *fp,
 		struct kobject *kobj, struct bin_attribute *attr,
 		char *buf, loff_t off, size_t count) {
-	struct device *dev =
-			container_of(kobj, struct device, kobj)->parent->parent;
+	struct device *dev = kobj_to_dev(kobj)->parent->parent;
 	struct kone_device *kone = hid_get_drvdata(dev_get_drvdata(dev));
 
 	if (off >= sizeof(struct kone_profile))
@@ -353,8 +350,7 @@ static ssize_t kone_sysfs_read_profilex(struct file *fp,
 static ssize_t kone_sysfs_write_profilex(struct file *fp,
 		struct kobject *kobj, struct bin_attribute *attr,
 		char *buf, loff_t off, size_t count) {
-	struct device *dev =
-			container_of(kobj, struct device, kobj)->parent->parent;
+	struct device *dev = kobj_to_dev(kobj)->parent->parent;
 	struct kone_device *kone = hid_get_drvdata(dev_get_drvdata(dev));
 	struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
 	struct kone_profile *profile;

drivers/hid/hid-roccat-koneplus.c

@@ -87,8 +87,7 @@ static ssize_t koneplus_sysfs_read(struct file *fp, struct kobject *kobj,
 		char *buf, loff_t off, size_t count,
 		size_t real_size, uint command)
 {
-	struct device *dev =
-			container_of(kobj, struct device, kobj)->parent->parent;
+	struct device *dev = kobj_to_dev(kobj)->parent->parent;
 	struct koneplus_device *koneplus = hid_get_drvdata(dev_get_drvdata(dev));
 	struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
 	int retval;
@@ -113,8 +112,7 @@ static ssize_t koneplus_sysfs_write(struct file *fp, struct kobject *kobj,
 		void const *buf, loff_t off, size_t count,
 		size_t real_size, uint command)
 {
-	struct device *dev =
-			container_of(kobj, struct device, kobj)->parent->parent;
+	struct device *dev = kobj_to_dev(kobj)->parent->parent;
 	struct koneplus_device *koneplus = hid_get_drvdata(dev_get_drvdata(dev));
 	struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
 	int retval;
@@ -193,8 +191,7 @@ static ssize_t koneplus_sysfs_read_profilex_settings(struct file *fp,
 		struct kobject *kobj, struct bin_attribute *attr, char *buf,
 		loff_t off, size_t count)
 {
-	struct device *dev =
-			container_of(kobj, struct device, kobj)->parent->parent;
+	struct device *dev = kobj_to_dev(kobj)->parent->parent;
 	struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
 	ssize_t retval;
 
@@ -212,8 +209,7 @@ static ssize_t koneplus_sysfs_read_profilex_buttons(struct file *fp,
 		struct kobject *kobj, struct bin_attribute *attr, char *buf,
 		loff_t off, size_t count)
 {
-	struct device *dev =
-			container_of(kobj, struct device, kobj)->parent->parent;
+	struct device *dev = kobj_to_dev(kobj)->parent->parent;
 	struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
 	ssize_t retval;
 

drivers/hid/hid-roccat-kovaplus.c

@@ -128,8 +128,7 @@ static ssize_t kovaplus_sysfs_read(struct file *fp, struct kobject *kobj,
 		char *buf, loff_t off, size_t count,
 		size_t real_size, uint command)
 {
-	struct device *dev =
-			container_of(kobj, struct device, kobj)->parent->parent;
+	struct device *dev = kobj_to_dev(kobj)->parent->parent;
 	struct kovaplus_device *kovaplus = hid_get_drvdata(dev_get_drvdata(dev));
 	struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
 	int retval;
@@ -154,8 +153,7 @@ static ssize_t kovaplus_sysfs_write(struct file *fp, struct kobject *kobj,
 		void const *buf, loff_t off, size_t count,
 		size_t real_size, uint command)
 {
-	struct device *dev =
-			container_of(kobj, struct device, kobj)->parent->parent;
+	struct device *dev = kobj_to_dev(kobj)->parent->parent;
 	struct kovaplus_device *kovaplus = hid_get_drvdata(dev_get_drvdata(dev));
 	struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
 	int retval;
@@ -221,8 +219,7 @@ static ssize_t kovaplus_sysfs_read_profilex_settings(struct file *fp,
 		struct kobject *kobj, struct bin_attribute *attr, char *buf,
 		loff_t off, size_t count)
 {
-	struct device *dev =
-			container_of(kobj, struct device, kobj)->parent->parent;
+	struct device *dev = kobj_to_dev(kobj)->parent->parent;
 	struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
 	ssize_t retval;
 
@@ -240,8 +237,7 @@ static ssize_t kovaplus_sysfs_read_profilex_buttons(struct file *fp,
 		struct kobject *kobj, struct bin_attribute *attr, char *buf,
 		loff_t off, size_t count)
 {
-	struct device *dev =
-			container_of(kobj, struct device, kobj)->parent->parent;
+	struct device *dev = kobj_to_dev(kobj)->parent->parent;
 	struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
 	ssize_t retval;
 

drivers/hid/hid-roccat-lua.c

@@ -30,7 +30,7 @@ static ssize_t lua_sysfs_read(struct file *fp, struct kobject *kobj,
 		char *buf, loff_t off, size_t count,
 		size_t real_size, uint command)
 {
-	struct device *dev = container_of(kobj, struct device, kobj);
+	struct device *dev = kobj_to_dev(kobj);
 	struct lua_device *lua = hid_get_drvdata(dev_get_drvdata(dev));
 	struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
 	int retval;
@@ -52,7 +52,7 @@ static ssize_t lua_sysfs_write(struct file *fp, struct kobject *kobj,
 		void const *buf, loff_t off, size_t count,
 		size_t real_size, uint command)
 {
-	struct device *dev = container_of(kobj, struct device, kobj);
+	struct device *dev = kobj_to_dev(kobj);
 	struct lua_device *lua = hid_get_drvdata(dev_get_drvdata(dev));
 	struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
 	int retval;

drivers/hid/hid-roccat-pyra.c

@@ -90,8 +90,7 @@ static ssize_t pyra_sysfs_read(struct file *fp, struct kobject *kobj,
 		char *buf, loff_t off, size_t count,
 		size_t real_size, uint command)
 {
-	struct device *dev =
-			container_of(kobj, struct device, kobj)->parent->parent;
+	struct device *dev = kobj_to_dev(kobj)->parent->parent;
 	struct pyra_device *pyra = hid_get_drvdata(dev_get_drvdata(dev));
 	struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
 	int retval;
@@ -116,8 +115,7 @@ static ssize_t pyra_sysfs_write(struct file *fp, struct kobject *kobj,
 		void const *buf, loff_t off, size_t count,
 		size_t real_size, uint command)
 {
-	struct device *dev =
-			container_of(kobj, struct device, kobj)->parent->parent;
+	struct device *dev = kobj_to_dev(kobj)->parent->parent;
 	struct pyra_device *pyra = hid_get_drvdata(dev_get_drvdata(dev));
 	struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
 	int retval;
@@ -191,8 +189,7 @@ static ssize_t pyra_sysfs_read_profilex_settings(struct file *fp,
 		struct kobject *kobj, struct bin_attribute *attr, char *buf,
 		loff_t off, size_t count)
 {
-	struct device *dev =
-			container_of(kobj, struct device, kobj)->parent->parent;
+	struct device *dev = kobj_to_dev(kobj)->parent->parent;
 	struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
 	ssize_t retval;
 
@@ -210,8 +207,7 @@ static ssize_t pyra_sysfs_read_profilex_buttons(struct file *fp,
 		struct kobject *kobj, struct bin_attribute *attr, char *buf,
 		loff_t off, size_t count)
 {
-	struct device *dev =
-			container_of(kobj, struct device, kobj)->parent->parent;
+	struct device *dev = kobj_to_dev(kobj)->parent->parent;
 	struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
 	ssize_t retval;
 
@@ -248,8 +244,7 @@ static ssize_t pyra_sysfs_write_settings(struct file *fp,
 		struct kobject *kobj, struct bin_attribute *attr, char *buf,
 		loff_t off, size_t count)
 {
-	struct device *dev =
-			container_of(kobj, struct device, kobj)->parent->parent;
+	struct device *dev = kobj_to_dev(kobj)->parent->parent;
 	struct pyra_device *pyra = hid_get_drvdata(dev_get_drvdata(dev));
 	struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
 	int retval = 0;

drivers/hid/wacom_sys.c

@@ -1130,7 +1130,7 @@ static ssize_t wacom_show_remote_mode(struct kobject *kobj,
 				      struct kobj_attribute *kattr,
 				      char *buf, int index)
 {
-	struct device *dev = container_of(kobj->parent, struct device, kobj);
+	struct device *dev = kobj_to_dev(kobj->parent);
 	struct hid_device *hdev = to_hid_device(dev);
 	struct wacom *wacom = hid_get_drvdata(hdev);
 	u8 mode;
@@ -1241,7 +1241,7 @@ static ssize_t wacom_store_unpair_remote(struct kobject *kobj,
 					 const char *buf, size_t count)
 {
 	unsigned char selector = 0;
-	struct device *dev = container_of(kobj->parent, struct device, kobj);
+	struct device *dev = kobj_to_dev(kobj->parent);
 	struct hid_device *hdev = to_hid_device(dev);
 	struct wacom *wacom = hid_get_drvdata(hdev);
 	int err;