From 214b8ffc205bcf2ca5b04b3903be13a9257c3fbd Mon Sep 17 00:00:00 2001 From: Stefan Haberland Date: Sun, 30 Oct 2011 15:16:56 +0100 Subject: [PATCH] [S390] dasd: wait for terminated request After terminating a request in the dasd_sleep_on_immediatly function, wait for the clear interrupt to be received before starting the new request. This prevents the requests from getting mixed up. Signed-off-by: Stefan Haberland Signed-off-by: Martin Schwidefsky --- drivers/s390/block/dasd.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/drivers/s390/block/dasd.c b/drivers/s390/block/dasd.c index 46054c75cf31..3b94b6542fc0 100644 --- a/drivers/s390/block/dasd.c +++ b/drivers/s390/block/dasd.c @@ -2261,7 +2261,11 @@ int dasd_sleep_on_immediatly(struct dasd_ccw_req *cqr) cqr->callback = dasd_wakeup_cb; cqr->callback_data = DASD_SLEEPON_START_TAG; cqr->status = DASD_CQR_QUEUED; - list_add(&cqr->devlist, &device->ccw_queue); + /* + * add new request as second + * first the terminated cqr needs to be finished + */ + list_add(&cqr->devlist, device->ccw_queue.next); /* let the bh start the request to keep them in order */ dasd_schedule_device_bh(device); -- 2.20.1