HID: handle all multitouch devices through hid-multitouch
When the quirk HID_QUIRK_MULTITOUCH is present and when hid-multitouch
is loaded, let's pass the device to hid-multitouch even if it has
not been registered in hid-multitouch.
If any other driver wants to take precedence over hid-multitouch,
the usual way of adding it to hid_have_special_driver will work as
the quirk HID_QUIRK_MULTITOUCH won't be set by the generic hid layer.
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@enac.fr>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
diff --git a/drivers/hid/hid-core.c b/drivers/hid/hid-core.c
index 4f4143c..05a0c9a 100644
--- a/drivers/hid/hid-core.c
+++ b/drivers/hid/hid-core.c
@@ -1232,7 +1232,6 @@
hdev->claimed |= HID_CLAIMED_INPUT;
if (hdev->quirks & HID_QUIRK_MULTITOUCH) {
/* this device should be handled by hid-multitouch, skip it */
- hdev->quirks &= ~HID_QUIRK_MULTITOUCH;
return -ENODEV;
}
@@ -1667,6 +1666,10 @@
struct hid_driver *hdrv = container_of(drv, struct hid_driver, driver);
struct hid_device *hdev = container_of(dev, struct hid_device, dev);
+ if ((hdev->quirks & HID_QUIRK_MULTITOUCH) &&
+ !strncmp(hdrv->name, "hid-multitouch", 14))
+ return 1;
+
if (!hid_match_device(hdev, hdrv))
return 0;
@@ -1691,8 +1694,11 @@
if (!hdev->driver) {
id = hid_match_device(hdev, hdrv);
if (id == NULL) {
- ret = -ENODEV;
- goto unlock;
+ if (!((hdev->quirks & HID_QUIRK_MULTITOUCH) &&
+ !strncmp(hdrv->name, "hid-multitouch", 14))) {
+ ret = -ENODEV;
+ goto unlock;
+ }
}
hdev->driver = hdrv;