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| author | Stefan Haberland <stefan.haberland@de.ibm.com> | 2011-10-30 15:16:56 +0100 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2011-10-30 15:16:44 +0100 |
| commit | 214b8ffc205bcf2ca5b04b3903be13a9257c3fbd (patch) | |
| tree | a5344a72ee114692c7fd179529cc912be5ccc178 /drivers/s390 | |
| parent | 3948a102509f3bc3cc8728b2556a1ad7a4dbd7e7 (diff) | |
| download | linux-214b8ffc205bcf2ca5b04b3903be13a9257c3fbd.tar.bz2 | |
[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 <stefan.haberland@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'drivers/s390')
| -rw-r--r-- | drivers/s390/block/dasd.c | 6 |
1 files changed, 5 insertions, 1 deletions
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); |