[SCSI] zfcp: fix adapter initialization
Fixed various problems in opening sequence of adapters which was previously
changed with NPIV support:
o corrected handling when exchange port data function is not supported,
otherwise adapters on z900 cannot be opened anymore
o corrected setup of timer for exchange port data if called from error
recovery
o corrected check of return code of exchange config data
Signed-off-by: Andreas Herrmann <aherrman@de.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
diff --git a/drivers/s390/scsi/zfcp_fsf.c b/drivers/s390/scsi/zfcp_fsf.c
index 3b0fc11..fbc81b0 100644
--- a/drivers/s390/scsi/zfcp_fsf.c
+++ b/drivers/s390/scsi/zfcp_fsf.c
@@ -2191,13 +2191,10 @@
return -EOPNOTSUPP;
}
- timer = kmalloc(sizeof(struct timer_list), GFP_KERNEL);
- if (!timer)
- return -ENOMEM;
-
/* setup new FSF request */
retval = zfcp_fsf_req_create(adapter, FSF_QTCB_EXCHANGE_PORT_DATA,
- 0, 0, &lock_flags, &fsf_req);
+ erp_action ? ZFCP_REQ_AUTO_CLEANUP : 0,
+ 0, &lock_flags, &fsf_req);
if (retval < 0) {
ZFCP_LOG_INFO("error: Out of resources. Could not create an "
"exchange port data request for"
@@ -2205,25 +2202,33 @@
zfcp_get_busid_by_adapter(adapter));
write_unlock_irqrestore(&adapter->request_queue.queue_lock,
lock_flags);
- goto out;
- }
-
- if (erp_action) {
- erp_action->fsf_req = fsf_req;
- fsf_req->erp_action = erp_action;
+ return retval;
}
if (data)
- fsf_req->data = (unsigned long) data;
+ fsf_req->data = (unsigned long) data;
sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_curr, 0);
sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
- init_timer(timer);
- timer->function = zfcp_fsf_request_timeout_handler;
- timer->data = (unsigned long) adapter;
- timer->expires = ZFCP_FSF_REQUEST_TIMEOUT;
+ if (erp_action) {
+ erp_action->fsf_req = fsf_req;
+ fsf_req->erp_action = erp_action;
+ timer = &erp_action->timer;
+ } else {
+ timer = kmalloc(sizeof(struct timer_list), GFP_ATOMIC);
+ if (!timer) {
+ write_unlock_irqrestore(&adapter->request_queue.queue_lock,
+ lock_flags);
+ zfcp_fsf_req_free(fsf_req);
+ return -ENOMEM;
+ }
+ init_timer(timer);
+ timer->function = zfcp_fsf_request_timeout_handler;
+ timer->data = (unsigned long) adapter;
+ timer->expires = ZFCP_FSF_REQUEST_TIMEOUT;
+ }
retval = zfcp_fsf_req_send(fsf_req, timer);
if (retval) {
@@ -2233,23 +2238,22 @@
zfcp_fsf_req_free(fsf_req);
if (erp_action)
erp_action->fsf_req = NULL;
+ else
+ kfree(timer);
write_unlock_irqrestore(&adapter->request_queue.queue_lock,
lock_flags);
- goto out;
+ return retval;
}
- ZFCP_LOG_DEBUG("Exchange Port Data request initiated (adapter %s)\n",
- zfcp_get_busid_by_adapter(adapter));
+ write_unlock_irqrestore(&adapter->request_queue.queue_lock, lock_flags);
- write_unlock_irqrestore(&adapter->request_queue.queue_lock,
- lock_flags);
-
- wait_event(fsf_req->completion_wq,
- fsf_req->status & ZFCP_STATUS_FSFREQ_COMPLETED);
- del_timer_sync(timer);
- zfcp_fsf_req_free(fsf_req);
- out:
- kfree(timer);
+ if (!erp_action) {
+ wait_event(fsf_req->completion_wq,
+ fsf_req->status & ZFCP_STATUS_FSFREQ_COMPLETED);
+ del_timer_sync(timer);
+ zfcp_fsf_req_free(fsf_req);
+ kfree(timer);
+ }
return retval;
}