s390/zfcp: remove pm support from zfcp driver

As part of removing the power management support from
s390 arch, remove PM callbacks from the scsi/zfcp driver.

Signed-off-by: Vineeth Vijayan <vneethv@linux.ibm.com>
Reviewed-by: Steffen Maier <maier@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>

drivers/s390/scsi/zfcp_ccw.c

@@ -193,30 +193,6 @@ static int zfcp_ccw_set_online(struct ccw_device *cdev)
 	return 0;
 }
 
-/**
- * zfcp_ccw_offline_sync - shut down adapter and wait for it to finish
- * @cdev: pointer to belonging ccw device
- * @set: Status flags to set.
- * @tag: s390dbf trace record tag
- *
- * This function gets called by the common i/o layer and sets an adapter
- * into state offline.
- */
-static int zfcp_ccw_offline_sync(struct ccw_device *cdev, int set, char *tag)
-{
-	struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev);
-
-	if (!adapter)
-		return 0;
-
-	zfcp_erp_set_adapter_status(adapter, set);
-	zfcp_erp_adapter_shutdown(adapter, 0, tag);
-	zfcp_erp_wait(adapter);
-
-	zfcp_ccw_adapter_put(adapter);
-	return 0;
-}
-
 /**
  * zfcp_ccw_set_offline - set_offline function of zfcp driver
  * @cdev: pointer to belonging ccw device
@@ -226,7 +202,17 @@ static int zfcp_ccw_offline_sync(struct ccw_device *cdev, int set, char *tag)
  */
 static int zfcp_ccw_set_offline(struct ccw_device *cdev)
 {
-	return zfcp_ccw_offline_sync(cdev, 0, "ccsoff1");
+	struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev);
+
+	if (!adapter)
+		return 0;
+
+	zfcp_erp_set_adapter_status(adapter, 0);
+	zfcp_erp_adapter_shutdown(adapter, 0, "ccsoff1");
+	zfcp_erp_wait(adapter);
+
+	zfcp_ccw_adapter_put(adapter);
+	return 0;
 }
 
 /**
@@ -246,11 +232,6 @@ static int zfcp_ccw_notify(struct ccw_device *cdev, int event)
 
 	switch (event) {
 	case CIO_GONE:
-		if (atomic_read(&adapter->status) &
-		    ZFCP_STATUS_ADAPTER_SUSPENDED) { /* notification ignore */
-			zfcp_dbf_hba_basic("ccnigo1", adapter);
-			break;
-		}
 		dev_warn(&cdev->dev, "The FCP device has been detached\n");
 		zfcp_erp_adapter_shutdown(adapter, 0, "ccnoti1");
 		break;
@@ -260,11 +241,6 @@ static int zfcp_ccw_notify(struct ccw_device *cdev, int event)
 		zfcp_erp_adapter_shutdown(adapter, 0, "ccnoti2");
 		break;
 	case CIO_OPER:
-		if (atomic_read(&adapter->status) &
-		    ZFCP_STATUS_ADAPTER_SUSPENDED) { /* notification ignore */
-			zfcp_dbf_hba_basic("ccniop1", adapter);
-			break;
-		}
 		dev_info(&cdev->dev, "The FCP device is operational again\n");
 		zfcp_erp_set_adapter_status(adapter,
 					    ZFCP_STATUS_COMMON_RUNNING);
@@ -300,28 +276,6 @@ static void zfcp_ccw_shutdown(struct ccw_device *cdev)
 	zfcp_ccw_adapter_put(adapter);
 }
 
-static int zfcp_ccw_suspend(struct ccw_device *cdev)
-{
-	zfcp_ccw_offline_sync(cdev, ZFCP_STATUS_ADAPTER_SUSPENDED, "ccsusp1");
-	return 0;
-}
-
-static int zfcp_ccw_thaw(struct ccw_device *cdev)
-{
-	/* trace records for thaw and final shutdown during suspend
-	   can only be found in system dump until the end of suspend
-	   but not after resume because it's based on the memory image
-	   right after the very first suspend (freeze) callback */
-	zfcp_ccw_activate(cdev, 0, "ccthaw1");
-	return 0;
-}
-
-static int zfcp_ccw_resume(struct ccw_device *cdev)
-{
-	zfcp_ccw_activate(cdev, ZFCP_STATUS_ADAPTER_SUSPENDED, "ccresu1");
-	return 0;
-}
-
 struct ccw_driver zfcp_ccw_driver = {
 	.driver = {
 		.owner	= THIS_MODULE,
@@ -334,7 +288,4 @@ struct ccw_driver zfcp_ccw_driver = {
 	.set_offline = zfcp_ccw_set_offline,
 	.notify      = zfcp_ccw_notify,
 	.shutdown    = zfcp_ccw_shutdown,
-	.freeze      = zfcp_ccw_suspend,
-	.thaw	     = zfcp_ccw_thaw,
-	.restore     = zfcp_ccw_resume,
 };

drivers/s390/scsi/zfcp_dbf.c

@@ -263,31 +263,6 @@ void zfcp_dbf_hba_def_err(struct zfcp_adapter *adapter, u64 req_id, u16 scount,
 	spin_unlock_irqrestore(&dbf->pay_lock, flags);
 }
 
-/**
- * zfcp_dbf_hba_basic - trace event for basic adapter events
- * @tag: identifier for event
- * @adapter: pointer to struct zfcp_adapter
- */
-void zfcp_dbf_hba_basic(char *tag, struct zfcp_adapter *adapter)
-{
-	struct zfcp_dbf *dbf = adapter->dbf;
-	struct zfcp_dbf_hba *rec = &dbf->hba_buf;
-	static int const level = 1;
-	unsigned long flags;
-
-	if (unlikely(!debug_level_enabled(dbf->hba, level)))
-		return;
-
-	spin_lock_irqsave(&dbf->hba_lock, flags);
-	memset(rec, 0, sizeof(*rec));
-
-	memcpy(rec->tag, tag, ZFCP_DBF_TAG_LEN);
-	rec->id = ZFCP_DBF_HBA_BASIC;
-
-	debug_event(dbf->hba, level, rec, sizeof(*rec));
-	spin_unlock_irqrestore(&dbf->hba_lock, flags);
-}
-
 static void zfcp_dbf_set_common(struct zfcp_dbf_rec *rec,
 				struct zfcp_adapter *adapter,
 				struct zfcp_port *port,

drivers/s390/scsi/zfcp_def.h

@@ -70,7 +70,6 @@
 #define ZFCP_STATUS_ADAPTER_SIOSL_ISSUED	0x00000004
 #define ZFCP_STATUS_ADAPTER_XCONFIG_OK		0x00000008
 #define ZFCP_STATUS_ADAPTER_HOST_CON_INIT	0x00000010
-#define ZFCP_STATUS_ADAPTER_SUSPENDED		0x00000040
 #define ZFCP_STATUS_ADAPTER_ERP_PENDING		0x00000100
 #define ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED	0x00000200
 #define ZFCP_STATUS_ADAPTER_DATA_DIV_ENABLED	0x00000400

drivers/s390/scsi/zfcp_ext.h

@@ -49,7 +49,6 @@ extern void zfcp_dbf_hba_fsf_fces(char *tag, const struct zfcp_fsf_req *req,
 				  u32 fc_security_new);
 extern void zfcp_dbf_hba_bit_err(char *, struct zfcp_fsf_req *);
 extern void zfcp_dbf_hba_def_err(struct zfcp_adapter *, u64, u16, void **);
-extern void zfcp_dbf_hba_basic(char *, struct zfcp_adapter *);
 extern void zfcp_dbf_san_req(char *, struct zfcp_fsf_req *, u32);
 extern void zfcp_dbf_san_res(char *, struct zfcp_fsf_req *);
 extern void zfcp_dbf_san_in_els(char *, struct zfcp_fsf_req *);