diff options
Diffstat (limited to 'drivers/s390')
| -rw-r--r-- | drivers/s390/block/dasd.c | 29 |
1 files changed, 16 insertions, 13 deletions
diff --git a/drivers/s390/block/dasd.c b/drivers/s390/block/dasd.c index 170aae0..a3bfebc 100644 --- a/drivers/s390/block/dasd.c +++ b/drivers/s390/block/dasd.c @@ -1257,25 +1257,28 @@ __dasd_start_head(struct dasd_device * device) if (list_empty(&device->ccw_queue)) return; cqr = list_entry(device->ccw_queue.next, struct dasd_ccw_req, list); - /* check FAILFAST */ + if (cqr->status != DASD_CQR_QUEUED) + return; + /* Non-temporary stop condition will trigger fail fast */ if (device->stopped & ~DASD_STOPPED_PENDING && test_bit(DASD_CQR_FLAGS_FAILFAST, &cqr->flags) && (!dasd_eer_enabled(device))) { cqr->status = DASD_CQR_FAILED; dasd_schedule_bh(device); + return; } - if ((cqr->status == DASD_CQR_QUEUED) && - (!device->stopped)) { - /* try to start the first I/O that can be started */ - rc = device->discipline->start_IO(cqr); - if (rc == 0) - dasd_set_timer(device, cqr->expires); - else if (rc == -EACCES) { - dasd_schedule_bh(device); - } else - /* Hmpf, try again in 1/2 sec */ - dasd_set_timer(device, 50); - } + /* Don't try to start requests if device is stopped */ + if (device->stopped) + return; + + rc = device->discipline->start_IO(cqr); + if (rc == 0) + dasd_set_timer(device, cqr->expires); + else if (rc == -EACCES) { + dasd_schedule_bh(device); + } else + /* Hmpf, try again in 1/2 sec */ + dasd_set_timer(device, 50); } /* |
