HID: lenovo-tpkbd: remove usb dependency

lenovo tpkbd currently relies on the usb interface number to detect
if it is dealing with the touchpad interface or not.
As the report descriptors of the interface 0 does not contain the
button 3, we can use this to remove the need to check for usb.

Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

1 files changed, 6 insertions, 14 deletions

diff --git a/drivers/hid/hid-lenovo-tpkbd.c b/drivers/hid/hid-lenovo-tpkbd.c
index 0d9a276af16a..2d25b6cbbc05 100644
--- a/drivers/hid/hid-lenovo-tpkbd.c
+++ b/drivers/hid/hid-lenovo-tpkbd.c
@@ -14,11 +14,9 @@
 #include <linux/module.h>
 #include <linux/sysfs.h>
 #include <linux/device.h>
-#include <linux/usb.h>
 #include <linux/hid.h>
 #include <linux/input.h>
 #include <linux/leds.h>
-#include "usbhid/usbhid.h"
 
 #include "hid-ids.h"
 
@@ -41,10 +39,9 @@ static int tpkbd_input_mapping(struct hid_device *hdev,
 		struct hid_input *hi, struct hid_field *field,
 		struct hid_usage *usage, unsigned long **bit, int *max)
 {
-	struct usbhid_device *uhdev;
-
-	uhdev = (struct usbhid_device *) hdev->driver_data;
-	if (uhdev->ifnum == 1 && usage->hid == (HID_UP_BUTTON | 0x0010)) {
+	if (usage->hid == (HID_UP_BUTTON | 0x0010)) {
+		/* mark the device as pointer */
+		hid_set_drvdata(hdev, (void *)1);
 		map_key_clear(KEY_MICMUTE);
 		return 1;
 	}
@@ -398,7 +395,6 @@ static int tpkbd_probe(struct hid_device *hdev,
 		const struct hid_device_id *id)
 {
 	int ret;
-	struct usbhid_device *uhdev;
 
 	ret = hid_parse(hdev);
 	if (ret) {
@@ -412,9 +408,8 @@ static int tpkbd_probe(struct hid_device *hdev,
 		goto err;
 	}
 
-	uhdev = (struct usbhid_device *) hdev->driver_data;
-
-	if (uhdev->ifnum == 1) {
+	if (hid_get_drvdata(hdev)) {
+		hid_set_drvdata(hdev, NULL);
 		ret = tpkbd_probe_tp(hdev);
 		if (ret)
 			goto err_hid;
@@ -442,10 +437,7 @@ static void tpkbd_remove_tp(struct hid_device *hdev)
 
 static void tpkbd_remove(struct hid_device *hdev)
 {
-	struct usbhid_device *uhdev;
-
-	uhdev = (struct usbhid_device *) hdev->driver_data;
-	if (uhdev->ifnum == 1)
+	if (hid_get_drvdata(hdev))
 		tpkbd_remove_tp(hdev);
 
 	hid_hw_stop(hdev);