[SCSI] zfcp: Fix sparse warning by providing new entry in dbf
drivers/s390/scsi/zfcp_dbf.c:692:2: warning: context imbalance in
'zfcp_rec_dbf_event_thread' - different lock contexts for basic block
Replace the parameter indicating if the lock is held with a new entry
function that only acquires the lock. This makes the lock handling
more visible and removes the sparse warning.
Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com>
Signed-off-by: Martin Peschke <mp3@de.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
diff --git a/drivers/s390/scsi/zfcp_erp.c b/drivers/s390/scsi/zfcp_erp.c
index 55a4fdc..d05b370 100644
--- a/drivers/s390/scsi/zfcp_erp.c
+++ b/drivers/s390/scsi/zfcp_erp.c
@@ -783,7 +783,7 @@
zfcp_erp_action_to_ready(erp_action);
up(&adapter->erp_ready_sem);
- zfcp_rec_dbf_event_thread(2, adapter, 0);
+ zfcp_rec_dbf_event_thread(2, adapter);
}
/*
@@ -995,7 +995,7 @@
atomic_set_mask(ZFCP_STATUS_ADAPTER_ERP_THREAD_KILL, &adapter->status);
up(&adapter->erp_ready_sem);
- zfcp_rec_dbf_event_thread(2, adapter, 1);
+ zfcp_rec_dbf_event_thread_lock(2, adapter);
wait_event(adapter->erp_thread_wqh,
!atomic_test_mask(ZFCP_STATUS_ADAPTER_ERP_THREAD_UP,
@@ -1050,9 +1050,9 @@
* no action in 'ready' queue to be processed and
* thread is not to be killed
*/
- zfcp_rec_dbf_event_thread(4, adapter, 1);
+ zfcp_rec_dbf_event_thread_lock(4, adapter);
down_interruptible(&adapter->erp_ready_sem);
- zfcp_rec_dbf_event_thread(5, adapter, 1);
+ zfcp_rec_dbf_event_thread_lock(5, adapter);
}
atomic_clear_mask(ZFCP_STATUS_ADAPTER_ERP_THREAD_UP, &adapter->status);
@@ -2062,9 +2062,9 @@
* _must_ be the one belonging to the 'exchange config
* data' request.
*/
- zfcp_rec_dbf_event_thread(6, adapter, 1);
+ zfcp_rec_dbf_event_thread_lock(6, adapter);
down(&adapter->erp_ready_sem);
- zfcp_rec_dbf_event_thread(7, adapter, 1);
+ zfcp_rec_dbf_event_thread_lock(7, adapter);
if (erp_action->status & ZFCP_STATUS_ERP_TIMEDOUT) {
ZFCP_LOG_INFO("error: exchange of configuration data "
"for adapter %s timed out\n",
@@ -2118,9 +2118,9 @@
}
ret = ZFCP_ERP_SUCCEEDED;
- zfcp_rec_dbf_event_thread(8, adapter, 1);
+ zfcp_rec_dbf_event_thread_lock(8, adapter);
down(&adapter->erp_ready_sem);
- zfcp_rec_dbf_event_thread(9, adapter, 1);
+ zfcp_rec_dbf_event_thread_lock(9, adapter);
if (erp_action->status & ZFCP_STATUS_ERP_TIMEDOUT) {
ZFCP_LOG_INFO("error: exchange port data timed out (adapter "
"%s)\n", zfcp_get_busid_by_adapter(adapter));
@@ -2876,7 +2876,7 @@
/* finally put it into 'ready' queue and kick erp thread */
list_add_tail(&erp_action->list, &adapter->erp_ready_head);
up(&adapter->erp_ready_sem);
- zfcp_rec_dbf_event_thread(1, adapter, 0);
+ zfcp_rec_dbf_event_thread(1, adapter);
retval = 0;
out:
zfcp_rec_dbf_event_trigger(id, ref, want, need, erp_action,