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Commit ba91a967 authored by Geliang Tang's avatar Geliang Tang Committed by Jiri Kosina
Browse files

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: default avatarGeliang Tang <geliangtang@163.com>
Signed-off-by: default avatarJiri Kosina <jkosina@suse.cz>
parent ee79a8f8

drivers/hid/hid-core.c

+3 −4
Original line number Diff line number Diff line
@@ -2077,7 +2077,7 @@ 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;
@@ -2139,7 +2139,7 @@ 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;
@@ -2147,8 +2147,7 @@ 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;

include/linux/hid.h

+3 −0
Original line number Diff line number Diff line
@@ -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