HID: rmi: Disable populating F30 when the touchpad has physical buttons

Physical buttons do not use F30 to report their state and in some cases the
data reported in F30 is incorrect and inconsistent with what is reported by
the HID descriptor. When physical buttons are present, ignore F30 and let
hid-input report buttons based on what is defined in the HID descriptor.

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

diff --git a/drivers/hid/hid-rmi.c b/drivers/hid/hid-rmi.c
index 368ffdf2c0a3af086d9242f00476f598a3fffdf9..721f7f90a1571263bd17a3268a7c1ba0051d043d 100644 (file)
--- a/drivers/hid/hid-rmi.c
+++ b/drivers/hid/hid-rmi.c
@@ -1013,6 +1013,7 @@ static int rmi_populate_f30(struct hid_device *hdev)
 
 static int rmi_populate(struct hid_device *hdev)
 {
+       struct rmi_data *data = hid_get_drvdata(hdev);
        int ret;
 
        ret = rmi_scan_pdt(hdev);
@@ -1033,9 +1034,11 @@ static int rmi_populate(struct hid_device *hdev)
                return ret;
        }
 
-       ret = rmi_populate_f30(hdev);
-       if (ret)
-               hid_warn(hdev, "Error while initializing F30 (%d).\n", ret);
+       if (!(data->device_flags & RMI_DEVICE_HAS_PHYS_BUTTONS)) {
+               ret = rmi_populate_f30(hdev);
+               if (ret)
+                       hid_warn(hdev, "Error while initializing F30 (%d).\n", ret);
+       }
 
        return 0;
 }