diff options
Diffstat (limited to 'drivers/s390/scsi/zfcp_aux.c')
| -rw-r--r-- | drivers/s390/scsi/zfcp_aux.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/drivers/s390/scsi/zfcp_aux.c b/drivers/s390/scsi/zfcp_aux.c index d23027a2f2f..41635b13ccb 100644 --- a/drivers/s390/scsi/zfcp_aux.c +++ b/drivers/s390/scsi/zfcp_aux.c @@ -970,6 +970,27 @@ static void zfcp_dummy_release(struct device *dev) return; } +int zfcp_status_read_refill(struct zfcp_adapter *adapter) +{ + while (atomic_read(&adapter->stat_miss) > 0) + if (zfcp_fsf_status_read(adapter, ZFCP_WAIT_FOR_SBAL)) + break; + else + atomic_dec(&adapter->stat_miss); + + if (ZFCP_STATUS_READS_RECOM <= atomic_read(&adapter->stat_miss)) { + zfcp_erp_adapter_reopen(adapter, 0, 103, NULL); + return 1; + } + return 0; +} + +static void _zfcp_status_read_scheduler(struct work_struct *work) +{ + zfcp_status_read_refill(container_of(work, struct zfcp_adapter, + stat_work)); +} + /* * Enqueues an adapter at the end of the adapter list in the driver data. * All adapter internal structures are set up. @@ -1063,6 +1084,7 @@ zfcp_adapter_enqueue(struct ccw_device *ccw_device) /* initialize lock of associated request queue */ rwlock_init(&adapter->request_queue.queue_lock); + INIT_WORK(&adapter->stat_work, _zfcp_status_read_scheduler); /* mark adapter unusable as long as sysfs registration is not complete */ atomic_set_mask(ZFCP_STATUS_COMMON_REMOVE, &adapter->status); @@ -1123,6 +1145,7 @@ zfcp_adapter_dequeue(struct zfcp_adapter *adapter) int retval = 0; unsigned long flags; + cancel_work_sync(&adapter->stat_work); zfcp_adapter_scsi_unregister(adapter); device_unregister(&adapter->generic_services); zfcp_sysfs_adapter_remove_files(&adapter->ccw_device->dev); |