Add a new helper to_hid_driver() and use it in hid-core.c.
Signed-off-by: Geliang Tang <geliangt...@163.com>
---
drivers/hid/hid-core.c | 7 +++----
include/linux/hid.h | 3 +++
2 files changed, 6 insertions(+), 4 deletions(-)
diff --git a/drivers/hid/hid-core.c b/drivers/hid/hid-core.c
index 3abff97..ecf614b 100644
--- a/drivers/hid/hid-core.c
+++ b/drivers/hid/hid-core.c
@@ -2071,7 +2071,7 @@ struct hid_dynid {
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;
@@ -2133,7 +2133,7 @@ static const struct hid_device_id
*hid_match_device(struct hid_device *hdev,
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;
@@ -2141,8 +2141,7 @@ static int hid_bus_match(struct device *dev, struct
device_driver *drv)
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;
diff --git a/include/linux/hid.h b/include/linux/hid.h
index 1472026..75b66ec 100644
--- a/include/linux/hid.h
+++ b/include/linux/hid.h
@@ -717,6 +717,9 @@ struct hid_driver {
struct device_driver driver;
};
+#define to_hid_driver(pdrv) \
+ container_of(pdrv, struct hid_driver, driver)
+
/**
* hid_ll_driver - low level driver callbacks
* @start: called on probe to start the device
--
2.5.0
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