HID: add a new helper to_hid_driver()
Add a new helper to_hid_driver() and use it in hid-core.c.
Signed-off-by: Geliang Tang <geliangtang@163.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
diff --git a/drivers/hid/hid-core.c b/drivers/hid/hid-core.c
index a6e24e0..9d75205 100644
--- a/drivers/hid/hid-core.c
+++ b/drivers/hid/hid-core.c
@@ -2077,7 +2077,7 @@
static ssize_t store_new_id(struct device_driver *drv, const char *buf,
size_t count)
{
- struct hid_driver *hdrv = container_of(drv, struct hid_driver, driver);
+ struct hid_driver *hdrv = to_hid_driver(drv);
struct hid_dynid *dynid;
__u32 bus, vendor, product;
unsigned long driver_data = 0;
@@ -2139,7 +2139,7 @@
static int hid_bus_match(struct device *dev, struct device_driver *drv)
{
- struct hid_driver *hdrv = container_of(drv, struct hid_driver, driver);
+ struct hid_driver *hdrv = to_hid_driver(drv);
struct hid_device *hdev = to_hid_device(dev);
return hid_match_device(hdev, hdrv) != NULL;
@@ -2147,8 +2147,7 @@
static int hid_device_probe(struct device *dev)
{
- struct hid_driver *hdrv = container_of(dev->driver,
- struct hid_driver, driver);
+ struct hid_driver *hdrv = to_hid_driver(dev->driver);
struct hid_device *hdev = to_hid_device(dev);
const struct hid_device_id *id;
int ret = 0;