pong_valid 109 samples/qmi/qmi_sample_client.c u8 pong_valid; pong_valid 134 samples/qmi/qmi_sample_client.c pong_valid), pong_valid 348 samples/qmi/qmi_sample_client.c else if (!resp->pong_valid || memcmp(resp->pong, "pong", 4))