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-rw-r--r--drivers/s390/scsi/zfcp_dbf.c23
-rw-r--r--drivers/s390/scsi/zfcp_ext.h5
-rw-r--r--drivers/s390/scsi/zfcp_scsi.c14
3 files changed, 33 insertions, 9 deletions
diff --git a/drivers/s390/scsi/zfcp_dbf.c b/drivers/s390/scsi/zfcp_dbf.c
index 781141bf2c28..3b368fcf13f4 100644
--- a/drivers/s390/scsi/zfcp_dbf.c
+++ b/drivers/s390/scsi/zfcp_dbf.c
@@ -4,7 +4,7 @@
*
* Debug traces for zfcp.
*
- * Copyright IBM Corp. 2002, 2017
+ * Copyright IBM Corp. 2002, 2018
*/
#define KMSG_COMPONENT "zfcp"
@@ -310,6 +310,27 @@ void zfcp_dbf_rec_trig(char *tag, struct zfcp_adapter *adapter,
spin_unlock_irqrestore(&dbf->rec_lock, flags);
}
+/**
+ * zfcp_dbf_rec_trig_lock - trace event related to triggered recovery with lock
+ * @tag: identifier for event
+ * @adapter: adapter on which the erp_action should run
+ * @port: remote port involved in the erp_action
+ * @sdev: scsi device involved in the erp_action
+ * @want: wanted erp_action
+ * @need: required erp_action
+ *
+ * The adapter->erp_lock must not be held.
+ */
+void zfcp_dbf_rec_trig_lock(char *tag, struct zfcp_adapter *adapter,
+ struct zfcp_port *port, struct scsi_device *sdev,
+ u8 want, u8 need)
+{
+ unsigned long flags;
+
+ read_lock_irqsave(&adapter->erp_lock, flags);
+ zfcp_dbf_rec_trig(tag, adapter, port, sdev, want, need);
+ read_unlock_irqrestore(&adapter->erp_lock, flags);
+}
/**
* zfcp_dbf_rec_run_lvl - trace event related to running recovery
diff --git a/drivers/s390/scsi/zfcp_ext.h b/drivers/s390/scsi/zfcp_ext.h
index f3b55cce748a..bd0c5a9f04cb 100644
--- a/drivers/s390/scsi/zfcp_ext.h
+++ b/drivers/s390/scsi/zfcp_ext.h
@@ -4,7 +4,7 @@
*
* External function declarations.
*
- * Copyright IBM Corp. 2002, 2016
+ * Copyright IBM Corp. 2002, 2018
*/
#ifndef ZFCP_EXT_H
@@ -35,6 +35,9 @@ extern int zfcp_dbf_adapter_register(struct zfcp_adapter *);
extern void zfcp_dbf_adapter_unregister(struct zfcp_adapter *);
extern void zfcp_dbf_rec_trig(char *, struct zfcp_adapter *,
struct zfcp_port *, struct scsi_device *, u8, u8);
+extern void zfcp_dbf_rec_trig_lock(char *tag, struct zfcp_adapter *adapter,
+ struct zfcp_port *port,
+ struct scsi_device *sdev, u8 want, u8 need);
extern void zfcp_dbf_rec_run(char *, struct zfcp_erp_action *);
extern void zfcp_dbf_rec_run_lvl(int level, char *tag,
struct zfcp_erp_action *erp);
diff --git a/drivers/s390/scsi/zfcp_scsi.c b/drivers/s390/scsi/zfcp_scsi.c
index 9a01f583e562..a8efcb330bc1 100644
--- a/drivers/s390/scsi/zfcp_scsi.c
+++ b/drivers/s390/scsi/zfcp_scsi.c
@@ -4,7 +4,7 @@
*
* Interface to Linux SCSI midlayer.
*
- * Copyright IBM Corp. 2002, 2017
+ * Copyright IBM Corp. 2002, 2018
*/
#define KMSG_COMPONENT "zfcp"
@@ -690,9 +690,9 @@ static void zfcp_scsi_rport_register(struct zfcp_port *port)
ids.port_id = port->d_id;
ids.roles = FC_RPORT_ROLE_FCP_TARGET;
- zfcp_dbf_rec_trig("scpaddy", port->adapter, port, NULL,
- ZFCP_PSEUDO_ERP_ACTION_RPORT_ADD,
- ZFCP_PSEUDO_ERP_ACTION_RPORT_ADD);
+ zfcp_dbf_rec_trig_lock("scpaddy", port->adapter, port, NULL,
+ ZFCP_PSEUDO_ERP_ACTION_RPORT_ADD,
+ ZFCP_PSEUDO_ERP_ACTION_RPORT_ADD);
rport = fc_remote_port_add(port->adapter->scsi_host, 0, &ids);
if (!rport) {
dev_err(&port->adapter->ccw_device->dev,
@@ -714,9 +714,9 @@ static void zfcp_scsi_rport_block(struct zfcp_port *port)
struct fc_rport *rport = port->rport;
if (rport) {
- zfcp_dbf_rec_trig("scpdely", port->adapter, port, NULL,
- ZFCP_PSEUDO_ERP_ACTION_RPORT_DEL,
- ZFCP_PSEUDO_ERP_ACTION_RPORT_DEL);
+ zfcp_dbf_rec_trig_lock("scpdely", port->adapter, port, NULL,
+ ZFCP_PSEUDO_ERP_ACTION_RPORT_DEL,
+ ZFCP_PSEUDO_ERP_ACTION_RPORT_DEL);
fc_remote_port_delete(rport);
port->rport = NULL;
}