diff --git a/drivers/hid/hid-asus.c b/drivers/hid/hid-asus.c
index b59c3dafa6a4..f99752b998f3 100644
--- a/drivers/hid/hid-asus.c
+++ b/drivers/hid/hid-asus.c
@@ -219,14 +219,13 @@ static void asus_report_tool_width(struct asus_drvdata *drvdat)
 {
 	struct input_mt *mt = drvdat->input->mt;
 	struct input_mt_slot *oldest;
-	int oldid, count, i;
+	int oldid, i;
 
 	if (drvdat->tp->contact_size < 5)
 		return;
 
 	oldest = NULL;
 	oldid = mt->trkid;
-	count = 0;
 
 	for (i = 0; i < mt->num_slots; ++i) {
 		struct input_mt_slot *ps = &mt->slots[i];
@@ -238,7 +237,6 @@ static void asus_report_tool_width(struct asus_drvdata *drvdat)
 			oldest = ps;
 			oldid = id;
 		}
-		count++;
 	}
 
 	if (oldest) {
diff --git a/drivers/hid/hid-hyperv.c b/drivers/hid/hid-hyperv.c
index e0bc73124196..ab57b49a44ed 100644
--- a/drivers/hid/hid-hyperv.c
+++ b/drivers/hid/hid-hyperv.c
@@ -499,7 +499,7 @@ static int mousevsc_probe(struct hv_device *device,
 
 	ret = hid_add_device(hid_dev);
 	if (ret)
-		goto probe_err1;
+		goto probe_err2;
 
 
 	ret = hid_parse(hid_dev);
diff --git a/drivers/hid/wacom_wac.c b/drivers/hid/wacom_wac.c
index 77486962a773..0f3d57b42684 100644
--- a/drivers/hid/wacom_wac.c
+++ b/drivers/hid/wacom_wac.c
@@ -2520,11 +2520,12 @@ static void wacom_wac_pen_report(struct hid_device *hdev,
 
 	if (!delay_pen_events(wacom_wac) && wacom_wac->tool[0]) {
 		int id = wacom_wac->id[0];
-		if (wacom_wac->features.quirks & WACOM_QUIRK_PEN_BUTTON3 &&
-		    wacom_wac->hid_data.barrelswitch & wacom_wac->hid_data.barrelswitch2) {
-			wacom_wac->hid_data.barrelswitch = 0;
-			wacom_wac->hid_data.barrelswitch2 = 0;
-			wacom_wac->hid_data.barrelswitch3 = 1;
+		if (wacom_wac->features.quirks & WACOM_QUIRK_PEN_BUTTON3) {
+			int sw_state = wacom_wac->hid_data.barrelswitch |
+				       (wacom_wac->hid_data.barrelswitch2 << 1);
+			wacom_wac->hid_data.barrelswitch = sw_state == 1;
+			wacom_wac->hid_data.barrelswitch2 = sw_state == 2;
+			wacom_wac->hid_data.barrelswitch3 = sw_state == 3;
 		}
 		input_report_key(input, BTN_STYLUS, wacom_wac->hid_data.barrelswitch);
 		input_report_key(input, BTN_STYLUS2, wacom_wac->hid_data.barrelswitch2);