2008-02-19 14:49:57

by Martin Schwidefsky

[permalink] [raw]
Subject: [patch 13/13] qdio: FCP/SCSI write I/O stagnates on LPAR

From: Ursula Braun <[email protected]>

If running on LPAR, qdio might overlook an incoming buffer in certain
scenarios. The patch makes sure that incoming buffers are detected
immediately in all situations.

Signed-off-by: Ursula Braun <[email protected]>
Signed-off-by: Martin Schwidefsky <[email protected]>
---

drivers/s390/cio/qdio.c | 3 ---
1 file changed, 3 deletions(-)

Index: quilt-2.6/drivers/s390/cio/qdio.c
===================================================================
--- quilt-2.6.orig/drivers/s390/cio/qdio.c
+++ quilt-2.6/drivers/s390/cio/qdio.c
@@ -1215,9 +1215,6 @@ tiqdio_is_inbound_q_done(struct qdio_q *

if (!no_used)
return 1;
- if (!q->siga_sync && !irq->is_qebsm)
- /* we'll check for more primed buffers in qeth_stop_polling */
- return 0;
if (irq->is_qebsm) {
count = 1;
start_buf = q->first_to_check;

--
blue skies,
Martin.

"Reality continues to ruin my life." - Calvin.