lkml.org 
[lkml]   [2022]   [Feb]   [25]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH v2 2/2] scsi: libsas: Use bool for queue_work() return code
Date
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.

Signed-off-by: John Garry <john.garry@huawei.com>
---
drivers/scsi/libsas/sas_event.c | 30 +++++++++++-------------------
drivers/scsi/libsas/sas_internal.h | 2 +-
2 files changed, 12 insertions(+), 20 deletions(-)

diff --git a/drivers/scsi/libsas/sas_event.c b/drivers/scsi/libsas/sas_event.c
index 8ff58fd97837..f3a17191a4fe 100644
--- 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 24843db2cb65..13d0ffaada93 100644
--- 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 *);
--
2.26.2
\
 
 \ /
  Last update: 2022-02-25 12:05    [W:0.072 / U:0.052 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site