HID: wiimote: Add wiimote device structure
Allocate wiimote device structure with all wiimote related data
when registering new wiimote devices.
Signed-off-by: David Herrmann <dh.herrmann@googlemail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
diff --git a/drivers/hid/hid-wiimote.c b/drivers/hid/hid-wiimote.c
index ed4fe18..ff7cf12 100644
--- a/drivers/hid/hid-wiimote.c
+++ b/drivers/hid/hid-wiimote.c
@@ -17,6 +17,10 @@
#define WIIMOTE_VERSION "0.1"
#define WIIMOTE_NAME "Nintendo Wii Remote"
+struct wiimote_data {
+ struct hid_device *hdev;
+};
+
static int wiimote_hid_event(struct hid_device *hdev, struct hid_report *report,
u8 *raw_data, int size)
{
@@ -26,31 +30,64 @@
return 0;
}
+static struct wiimote_data *wiimote_create(struct hid_device *hdev)
+{
+ struct wiimote_data *wdata;
+
+ wdata = kzalloc(sizeof(*wdata), GFP_KERNEL);
+ if (!wdata)
+ return NULL;
+
+ wdata->hdev = hdev;
+ hid_set_drvdata(hdev, wdata);
+
+ return wdata;
+}
+
+static void wiimote_destroy(struct wiimote_data *wdata)
+{
+ kfree(wdata);
+}
+
static int wiimote_hid_probe(struct hid_device *hdev,
const struct hid_device_id *id)
{
+ struct wiimote_data *wdata;
int ret;
+ wdata = wiimote_create(hdev);
+ if (!wdata) {
+ hid_err(hdev, "Can't alloc device\n");
+ return -ENOMEM;
+ }
+
ret = hid_parse(hdev);
if (ret) {
hid_err(hdev, "HID parse failed\n");
- return ret;
+ goto err;
}
ret = hid_hw_start(hdev, HID_CONNECT_HIDRAW);
if (ret) {
hid_err(hdev, "HW start failed\n");
- return ret;
+ goto err;
}
hid_info(hdev, "New device registered\n");
return 0;
+
+err:
+ wiimote_destroy(wdata);
+ return ret;
}
static void wiimote_hid_remove(struct hid_device *hdev)
{
+ struct wiimote_data *wdata = hid_get_drvdata(hdev);
+
hid_info(hdev, "Device removed\n");
hid_hw_stop(hdev);
+ wiimote_destroy(wdata);
}
static const struct hid_device_id wiimote_hid_devices[] = {
