scsi: libsas: Make sas_notify_{phy,port}_event() return void

Nobody checks the return codes, so make them return void. Indeed, if the
LLDD cannot send an event, nothing much can be done in the LLDD about it.

Also remove prototype for sas_notify_phy_event() in sas_internal.h, which
should not be there.

Link: https://lore.kernel.org/r/1645786656-221630-2-git-send-email-john.garry@huawei.comReviewed-by: Xiang Chen <chenxiang66@hisilicon.com>
Reviewed-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Signed-off-by: John Garry <john.garry@huawei.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

drivers/scsi/libsas/sas_event.c

@@ -165,8 +165,8 @@ static bool sas_defer_event(struct asd_sas_phy *phy, struct asd_sas_event *ev)
 	return deferred;
 }
 
-int sas_notify_port_event(struct asd_sas_phy *phy, enum port_event event,
-			  gfp_t gfp_flags)
+void sas_notify_port_event(struct asd_sas_phy *phy, enum port_event event,
+			   gfp_t gfp_flags)
 {
 	struct sas_ha_struct *ha = phy->ha;
 	struct asd_sas_event *ev;
@@ -176,7 +176,7 @@ int sas_notify_port_event(struct asd_sas_phy *phy, enum port_event event,
 
 	ev = sas_alloc_event(phy, gfp_flags);
 	if (!ev)
-		return -ENOMEM;
+		return;
 
 	/* Call pm_runtime_put() with pairs in sas_port_event_worker() */
 	pm_runtime_get_noresume(ha->dev);
@@ -184,20 +184,18 @@ int sas_notify_port_event(struct asd_sas_phy *phy, enum port_event event,
 	INIT_SAS_EVENT(ev, sas_port_event_worker, phy, event);
 
 	if (sas_defer_event(phy, ev))
-		return 0;
+		return;
 
 	ret = sas_queue_event(event, &ev->work, ha);
 	if (ret != 1) {
 		pm_runtime_put(ha->dev);
 		sas_free_event(ev);
 	}
-
-	return ret;
 }
 EXPORT_SYMBOL_GPL(sas_notify_port_event);
 
-int sas_notify_phy_event(struct asd_sas_phy *phy, enum phy_event event,
-			 gfp_t gfp_flags)
+void sas_notify_phy_event(struct asd_sas_phy *phy, enum phy_event event,
+			  gfp_t gfp_flags)
 {
 	struct sas_ha_struct *ha = phy->ha;
 	struct asd_sas_event *ev;
@@ -207,7 +205,7 @@ int sas_notify_phy_event(struct asd_sas_phy *phy, enum phy_event event,
 
 	ev = sas_alloc_event(phy, gfp_flags);
 	if (!ev)
-		return -ENOMEM;
+		return;
 
 	/* Call pm_runtime_put() with pairs in sas_phy_event_worker() */
 	pm_runtime_get_noresume(ha->dev);
@@ -215,14 +213,12 @@ int sas_notify_phy_event(struct asd_sas_phy *phy, enum phy_event event,
 	INIT_SAS_EVENT(ev, sas_phy_event_worker, phy, event);
 
 	if (sas_defer_event(phy, ev))
-		return 0;
+		return;
 
 	ret = sas_queue_event(event, &ev->work, ha);
 	if (ret != 1) {
 		pm_runtime_put(ha->dev);
 		sas_free_event(ev);
 	}
-
-	return ret;
 }
 EXPORT_SYMBOL_GPL(sas_notify_phy_event);

drivers/scsi/libsas/sas_internal.h

@@ -78,8 +78,6 @@ int sas_smp_phy_control(struct domain_device *dev, int phy_id,
 			enum phy_func phy_func, struct sas_phy_linkrates *);
 int sas_smp_get_phy_events(struct sas_phy *phy);
 
-int sas_notify_phy_event(struct asd_sas_phy *phy, enum phy_event event,
-			 gfp_t flags);
 void sas_device_set_phy(struct domain_device *dev, struct sas_port *port);
 struct domain_device *sas_find_dev_by_rphy(struct sas_rphy *rphy);
 struct domain_device *sas_ex_to_ata(struct domain_device *ex_dev, int phy_id);

include/scsi/libsas.h

@@ -727,9 +727,9 @@ int sas_lu_reset(struct domain_device *dev, u8 *lun);
 int sas_query_task(struct sas_task *task, u16 tag);
 int sas_abort_task(struct sas_task *task, u16 tag);
 
-int sas_notify_port_event(struct asd_sas_phy *phy, enum port_event event,
-			  gfp_t gfp_flags);
-int sas_notify_phy_event(struct asd_sas_phy *phy, enum phy_event event,
-			 gfp_t gfp_flags);
+void sas_notify_port_event(struct asd_sas_phy *phy, enum port_event event,
+			   gfp_t gfp_flags);
+void sas_notify_phy_event(struct asd_sas_phy *phy, enum phy_event event,
+			   gfp_t gfp_flags);
 
 #endif /* _SASLIB_H_ */