s390/qdio: remove Input tasklet code

Both qeth and zfcp have fully moved to the polling-driven flow for
Input Queues with commit 0a6e634535f1 ("s390/qdio: extend polling
support to multiple queues") and commit 0b524abc2dd1 ("scsi: zfcp: Lift
Input Queue tasklet from qdio").

So remove the tasklet code for Input Queues, streamline the IRQ handlers
and push the tasklet struct into struct qdio_output_q.

Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Reviewed-by: Benjamin Block <bblock@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>

1 files changed, 7 insertions, 29 deletions

diff --git a/drivers/s390/cio/qdio_thinint.c b/drivers/s390/cio/qdio_thinint.c
index 7a440e4328cd..d495bf0200aa 100644
--- a/drivers/s390/cio/qdio_thinint.c
+++ b/drivers/s390/cio/qdio_thinint.c
@@ -106,32 +106,6 @@ static inline u32 clear_shared_ind(void)
 	return xchg(&q_indicators[TIQDIO_SHARED_IND].ind, 0);
 }
 
-static inline void tiqdio_call_inq_handlers(struct qdio_irq *irq)
-{
-	struct qdio_q *q;
-	int i;
-
-	if (!references_shared_dsci(irq))
-		xchg(irq->dsci, 0);
-
-	if (irq->irq_poll) {
-		if (!test_and_set_bit(QDIO_IRQ_DISABLED, &irq->poll_state))
-			irq->irq_poll(irq->cdev, irq->int_parm);
-		else
-			QDIO_PERF_STAT_INC(irq, int_discarded);
-
-		return;
-	}
-
-	for_each_input_queue(irq, q, i) {
-		/*
-		 * Call inbound processing but not directly
-		 * since that could starve other thinint queues.
-		 */
-		tasklet_schedule(&q->tasklet);
-	}
-}
-
 /**
  * tiqdio_thinint_handler - thin interrupt handler for qdio
  * @airq: pointer to adapter interrupt descriptor
@@ -153,10 +127,14 @@ static void tiqdio_thinint_handler(struct airq_struct *airq, bool floating)
 		if (unlikely(references_shared_dsci(irq))) {
 			if (!si_used)
 				continue;
-		} else if (!*irq->dsci)
-			continue;
+		} else {
+			if (!*irq->dsci)
+				continue;
+
+			xchg(irq->dsci, 0);
+		}
 
-		tiqdio_call_inq_handlers(irq);
+		qdio_deliver_irq(irq);
 
 		QDIO_PERF_STAT_INC(irq, adapter_int);
 	}