scsi: libsas: Use bool for queue_work() return code

Function queue_work() returns a bool, so use a bool to hold this value for
the return code from callers, which should make the code a tiny bit more
clear.

Also take this opportunity to condense the code of the those callers, such
as sas_queue_work(), as suggested by Damien.

Link: https://lore.kernel.org/r/1645786656-221630-3-git-send-email-john.garry@huawei.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>

diff --git a/drivers/scsi/libsas/sas_event.c b/drivers/scsi/libsas/sas_event.c
index 8ff58fd..f3a1719 100644 (file)
--- a/drivers/scsi/libsas/sas_event.c
+++ b/drivers/scsi/libsas/sas_event.c
@@ -10,29 +10,26 @@
 #include <scsi/scsi_host.h>
 #include "sas_internal.h"
 
-int sas_queue_work(struct sas_ha_struct *ha, struct sas_work *sw)
+bool sas_queue_work(struct sas_ha_struct *ha, struct sas_work *sw)
 {
-       /* it's added to the defer_q when draining so return succeed */
-       int rc = 1;
-
        if (!test_bit(SAS_HA_REGISTERED, &ha->state))
-               return 0;
+               return false;
 
        if (test_bit(SAS_HA_DRAINING, &ha->state)) {
                /* add it to the defer list, if not already pending */
                if (list_empty(&sw->drain_node))
                        list_add_tail(&sw->drain_node, &ha->defer_q);
-       } else
-               rc = queue_work(ha->event_q, &sw->work);
+               return true;
+       }
 
-       return rc;
+       return queue_work(ha->event_q, &sw->work);
 }
 
-static int sas_queue_event(int event, struct sas_work *work,
+static bool sas_queue_event(int event, struct sas_work *work,
                            struct sas_ha_struct *ha)
 {
        unsigned long flags;
-       int rc;
+       bool rc;
 
        spin_lock_irqsave(&ha->lock, flags);
        rc = sas_queue_work(ha, work);
@@ -44,13 +41,12 @@ static int sas_queue_event(int event, struct sas_work *work,
 void sas_queue_deferred_work(struct sas_ha_struct *ha)
 {
        struct sas_work *sw, *_sw;
-       int ret;
 
        spin_lock_irq(&ha->lock);
        list_for_each_entry_safe(sw, _sw, &ha->defer_q, drain_node) {
                list_del_init(&sw->drain_node);
-               ret = sas_queue_work(ha, sw);
-               if (ret != 1) {
+
+               if (!sas_queue_work(ha, sw)) {
                        pm_runtime_put(ha->dev);
                        sas_free_event(to_asd_sas_event(&sw->work));
                }
@@ -170,7 +166,6 @@ void sas_notify_port_event(struct asd_sas_phy *phy, enum port_event event,
 {
        struct sas_ha_struct *ha = phy->ha;
        struct asd_sas_event *ev;
-       int ret;
 
        BUG_ON(event >= PORT_NUM_EVENTS);
 
@@ -186,8 +181,7 @@ void sas_notify_port_event(struct asd_sas_phy *phy, enum port_event event,
        if (sas_defer_event(phy, ev))
                return;
 
-       ret = sas_queue_event(event, &ev->work, ha);
-       if (ret != 1) {
+       if (!sas_queue_event(event, &ev->work, ha)) {
                pm_runtime_put(ha->dev);
                sas_free_event(ev);
        }
@@ -199,7 +193,6 @@ void sas_notify_phy_event(struct asd_sas_phy *phy, enum phy_event event,
 {
        struct sas_ha_struct *ha = phy->ha;
        struct asd_sas_event *ev;
-       int ret;
 
        BUG_ON(event >= PHY_NUM_EVENTS);
 
@@ -215,8 +208,7 @@ void sas_notify_phy_event(struct asd_sas_phy *phy, enum phy_event event,
        if (sas_defer_event(phy, ev))
                return;
 
-       ret = sas_queue_event(event, &ev->work, ha);
-       if (ret != 1) {
+       if (!sas_queue_event(event, &ev->work, ha)) {
                pm_runtime_put(ha->dev);
                sas_free_event(ev);
        }

diff --git a/drivers/scsi/libsas/sas_internal.h b/drivers/scsi/libsas/sas_internal.h
index 24843db..13d0ffa 100644 (file)
--- a/drivers/scsi/libsas/sas_internal.h
+++ b/drivers/scsi/libsas/sas_internal.h
@@ -67,7 +67,7 @@ void sas_porte_broadcast_rcvd(struct work_struct *work);
 void sas_porte_link_reset_err(struct work_struct *work);
 void sas_porte_timer_event(struct work_struct *work);
 void sas_porte_hard_reset(struct work_struct *work);
-int sas_queue_work(struct sas_ha_struct *ha, struct sas_work *sw);
+bool sas_queue_work(struct sas_ha_struct *ha, struct sas_work *sw);
 
 int sas_notify_lldd_dev_found(struct domain_device *);
 void sas_notify_lldd_dev_gone(struct domain_device *);