diff options
Diffstat (limited to 'drivers/s390/scsi/zfcp_ccw.c')
-rw-r--r-- | drivers/s390/scsi/zfcp_ccw.c | 45 |
1 files changed, 34 insertions, 11 deletions
diff --git a/drivers/s390/scsi/zfcp_ccw.c b/drivers/s390/scsi/zfcp_ccw.c index 51b6a05..b04038c 100644 --- a/drivers/s390/scsi/zfcp_ccw.c +++ b/drivers/s390/scsi/zfcp_ccw.c @@ -25,7 +25,8 @@ static int zfcp_ccw_probe(struct ccw_device *ccw_device) down(&zfcp_data.config_sema); if (zfcp_adapter_enqueue(ccw_device)) { dev_err(&ccw_device->dev, - "Setup of data structures failed.\n"); + "Setting up data structures for the " + "FCP adapter failed\n"); retval = -EINVAL; } up(&zfcp_data.config_sema); @@ -46,6 +47,8 @@ static void zfcp_ccw_remove(struct ccw_device *ccw_device) struct zfcp_adapter *adapter; struct zfcp_port *port, *p; struct zfcp_unit *unit, *u; + LIST_HEAD(unit_remove_lh); + LIST_HEAD(port_remove_lh); ccw_device_set_offline(ccw_device); down(&zfcp_data.config_sema); @@ -54,26 +57,26 @@ static void zfcp_ccw_remove(struct ccw_device *ccw_device) write_lock_irq(&zfcp_data.config_lock); list_for_each_entry_safe(port, p, &adapter->port_list_head, list) { list_for_each_entry_safe(unit, u, &port->unit_list_head, list) { - list_move(&unit->list, &port->unit_remove_lh); + list_move(&unit->list, &unit_remove_lh); atomic_set_mask(ZFCP_STATUS_COMMON_REMOVE, &unit->status); } - list_move(&port->list, &adapter->port_remove_lh); + list_move(&port->list, &port_remove_lh); atomic_set_mask(ZFCP_STATUS_COMMON_REMOVE, &port->status); } atomic_set_mask(ZFCP_STATUS_COMMON_REMOVE, &adapter->status); write_unlock_irq(&zfcp_data.config_lock); - list_for_each_entry_safe(port, p, &adapter->port_remove_lh, list) { - list_for_each_entry_safe(unit, u, &port->unit_remove_lh, list) { - if (atomic_test_mask(ZFCP_STATUS_UNIT_REGISTERED, - &unit->status)) + list_for_each_entry_safe(port, p, &port_remove_lh, list) { + list_for_each_entry_safe(unit, u, &unit_remove_lh, list) { + if (atomic_read(&unit->status) & + ZFCP_STATUS_UNIT_REGISTERED) scsi_remove_device(unit->device); zfcp_unit_dequeue(unit); } zfcp_port_dequeue(port); } - zfcp_adapter_wait(adapter); + wait_event(adapter->remove_wq, atomic_read(&adapter->refcount) == 0); zfcp_adapter_dequeue(adapter); up(&zfcp_data.config_sema); @@ -156,15 +159,18 @@ static int zfcp_ccw_notify(struct ccw_device *ccw_device, int event) switch (event) { case CIO_GONE: - dev_warn(&adapter->ccw_device->dev, "device gone\n"); + dev_warn(&adapter->ccw_device->dev, + "The FCP device has been detached\n"); zfcp_erp_adapter_shutdown(adapter, 0, 87, NULL); break; case CIO_NO_PATH: - dev_warn(&adapter->ccw_device->dev, "no path\n"); + dev_warn(&adapter->ccw_device->dev, + "The CHPID for the FCP device is offline\n"); zfcp_erp_adapter_shutdown(adapter, 0, 88, NULL); break; case CIO_OPER: - dev_info(&adapter->ccw_device->dev, "operational again\n"); + dev_info(&adapter->ccw_device->dev, + "The FCP device is operational again\n"); zfcp_erp_modify_adapter_status(adapter, 11, NULL, ZFCP_STATUS_COMMON_RUNNING, ZFCP_SET); @@ -220,3 +226,20 @@ int __init zfcp_ccw_register(void) { return ccw_driver_register(&zfcp_ccw_driver); } + +/** + * zfcp_get_adapter_by_busid - find zfcp_adapter struct + * @busid: bus id string of zfcp adapter to find + */ +struct zfcp_adapter *zfcp_get_adapter_by_busid(char *busid) +{ + struct ccw_device *ccw_device; + struct zfcp_adapter *adapter = NULL; + + ccw_device = get_ccwdev_by_busid(&zfcp_ccw_driver, busid); + if (ccw_device) { + adapter = dev_get_drvdata(&ccw_device->dev); + put_device(&ccw_device->dev); + } + return adapter; +} |