summaryrefslogtreecommitdiffstats
path: root/drivers/s390/scsi/zfcp_ccw.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/s390/scsi/zfcp_ccw.c')
-rw-r--r--drivers/s390/scsi/zfcp_ccw.c51
1 files changed, 35 insertions, 16 deletions
diff --git a/drivers/s390/scsi/zfcp_ccw.c b/drivers/s390/scsi/zfcp_ccw.c
index 391dd29749f8..b04038c74786 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);
@@ -152,21 +155,22 @@ static int zfcp_ccw_set_offline(struct ccw_device *ccw_device)
*/
static int zfcp_ccw_notify(struct ccw_device *ccw_device, int event)
{
- struct zfcp_adapter *adapter;
+ struct zfcp_adapter *adapter = dev_get_drvdata(&ccw_device->dev);
- down(&zfcp_data.config_sema);
- adapter = dev_get_drvdata(&ccw_device->dev);
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);
@@ -174,8 +178,6 @@ static int zfcp_ccw_notify(struct ccw_device *ccw_device, int event)
89, NULL);
break;
}
- zfcp_erp_wait(adapter);
- up(&zfcp_data.config_sema);
return 1;
}
@@ -224,3 +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;
+}