diff options
Diffstat (limited to 'drivers/s390/block/dasd.c')
| -rw-r--r-- | drivers/s390/block/dasd.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/s390/block/dasd.c b/drivers/s390/block/dasd.c index f208940c463c..555e18a6b781 100644 --- a/drivers/s390/block/dasd.c +++ b/drivers/s390/block/dasd.c @@ -1232,6 +1232,19 @@ __dasd_process_blk_queue(struct dasd_device * device) if (IS_ERR(cqr)) { if (PTR_ERR(cqr) == -ENOMEM) break; /* terminate request queue loop */ + if (PTR_ERR(cqr) == -EAGAIN) { + /* + * The current request cannot be build right + * now, we have to try later. If this request + * is the head-of-queue we stop the device + * for 1/2 second. + */ + if (!list_empty(&device->ccw_queue)) + break; + device->stopped |= DASD_STOPPED_PENDING; + dasd_set_timer(device, HZ/2); + break; + } DBF_DEV_EVENT(DBF_ERR, device, "CCW creation failed (rc=%ld) " "on request %p", |