prev_usage        696 drivers/hid/hid-multitouch.c 	struct hid_usage *prev_usage = NULL;
prev_usage        712 drivers/hid/hid-multitouch.c 		prev_usage = &field->usage[usage->usage_index - 1];
prev_usage        719 drivers/hid/hid-multitouch.c 			if (prev_usage && (prev_usage->hid == usage->hid)) {
prev_usage        744 drivers/hid/hid-multitouch.c 			if (prev_usage && (prev_usage->hid == usage->hid)) {