s390/qdio: warn about unexpected SLSB states (c920c545) · Commits · 戴 / test

drivers/s390/cio/qdio_main.c

+11 −5

Original line number	Original line	Diff line number	Diff line
	@@ -503,15 +503,18 @@ static int get_inbound_buffer_frontier(struct qdio_q *q, unsigned int start)
	account_sbals_error(q, count);		account_sbals_error(q, count);
	return count;		return count;
	case SLSB_CU_INPUT_EMPTY:		case SLSB_CU_INPUT_EMPTY:
	case SLSB_P_INPUT_NOT_INIT:
	case SLSB_P_INPUT_ACK:
	if (q->irq_ptr->perf_stat_enabled)		if (q->irq_ptr->perf_stat_enabled)
	q->q_stats.nr_sbal_nop++;		q->q_stats.nr_sbal_nop++;
	DBF_DEV_EVENT(DBF_INFO, q->irq_ptr, "in nop:%1d %#02x",		DBF_DEV_EVENT(DBF_INFO, q->irq_ptr, "in nop:%1d %#02x",
	q->nr, start);		q->nr, start);
	return 0;		return 0;
			case SLSB_P_INPUT_NOT_INIT:
			case SLSB_P_INPUT_ACK:
			/* We should never see this state, throw a WARN: */
	default:		default:
	WARN_ON_ONCE(1);		dev_WARN_ONCE(&q->irq_ptr->cdev->dev, 1,
			"found state %#x at index %u on queue %u\n",
			state, start, q->nr);
	return 0;		return 0;
	}		}
	}		}
	@@ -716,11 +719,14 @@ static int get_outbound_buffer_frontier(struct qdio_q *q, unsigned int start)
	DBF_DEV_EVENT(DBF_INFO, q->irq_ptr, "out primed:%1d",		DBF_DEV_EVENT(DBF_INFO, q->irq_ptr, "out primed:%1d",
	q->nr);		q->nr);
	return 0;		return 0;
	case SLSB_P_OUTPUT_NOT_INIT:
	case SLSB_P_OUTPUT_HALTED:		case SLSB_P_OUTPUT_HALTED:
	return 0;		return 0;
			case SLSB_P_OUTPUT_NOT_INIT:
			/* We should never see this state, throw a WARN: */
	default:		default:
	WARN_ON_ONCE(1);		dev_WARN_ONCE(&q->irq_ptr->cdev->dev, 1,
			"found state %#x at index %u on queue %u\n",
			state, start, q->nr);
	return 0;		return 0;
	}		}
	}		}