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-rw-r--r--drivers/hid/wacom_wac.c12
-rw-r--r--drivers/hid/wacom_wac.h1
2 files changed, 12 insertions, 1 deletions
diff --git a/drivers/hid/wacom_wac.c b/drivers/hid/wacom_wac.c
index 678f504239a0..67ecd149ad21 100644
--- a/drivers/hid/wacom_wac.c
+++ b/drivers/hid/wacom_wac.c
@@ -1752,6 +1752,9 @@ int wacom_equivalent_usage(int usage)
int subpage = (usage & 0xFF00) << 8;
int subusage = (usage & 0xFF);
+ if (usage == WACOM_HID_WT_REPORT_VALID)
+ return usage;
+
if (subpage == HID_UP_UNDEFINED)
subpage = WACOM_HID_SP_DIGITIZER;
@@ -2494,6 +2497,9 @@ static void wacom_wac_finger_event(struct hid_device *hdev,
unsigned equivalent_usage = wacom_equivalent_usage(usage->hid);
struct wacom_features *features = &wacom->wacom_wac.features;
+ if (wacom_wac->is_invalid_bt_frame)
+ return;
+
switch (equivalent_usage) {
case HID_GD_X:
wacom_wac->hid_data.x = value;
@@ -2513,12 +2519,14 @@ static void wacom_wac_finger_event(struct hid_device *hdev,
case HID_DG_TIPSWITCH:
wacom_wac->hid_data.tipswitch = value;
break;
+ case WACOM_HID_WT_REPORT_VALID:
+ wacom_wac->is_invalid_bt_frame = !value;
+ return;
case HID_DG_CONTACTMAX:
features->touch_max = value;
return;
}
-
if (usage->usage_index + 1 == field->report_count) {
if (equivalent_usage == wacom_wac->hid_data.last_slot_field)
wacom_wac_finger_slot(wacom_wac, wacom_wac->touch_input);
@@ -2533,6 +2541,8 @@ static void wacom_wac_finger_pre_report(struct hid_device *hdev,
struct hid_data* hid_data = &wacom_wac->hid_data;
int i;
+ wacom_wac->is_invalid_bt_frame = false;
+
for (i = 0; i < report->maxfield; i++) {
struct hid_field *field = report->field[i];
int j;
diff --git a/drivers/hid/wacom_wac.h b/drivers/hid/wacom_wac.h
index 48f08f8a556d..1cb63a4a0a41 100644
--- a/drivers/hid/wacom_wac.h
+++ b/drivers/hid/wacom_wac.h
@@ -159,6 +159,7 @@
#define WACOM_HID_WT_SERIALNUMBER (WACOM_HID_UP_WACOMTOUCH | 0x5b)
#define WACOM_HID_WT_X (WACOM_HID_UP_WACOMTOUCH | 0x130)
#define WACOM_HID_WT_Y (WACOM_HID_UP_WACOMTOUCH | 0x131)
+#define WACOM_HID_WT_REPORT_VALID (WACOM_HID_UP_WACOMTOUCH | 0x1d0)
#define WACOM_BATTERY_USAGE(f) (((f)->hid == HID_DG_BATTERYSTRENGTH) || \
((f)->hid == WACOM_HID_WD_BATTERY_CHARGING) || \