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[SCSI] libsas: replace event locks with atomic bitops

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The locks only served to make sure the pending event bitmask was updated
consistently.

Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
This commit is contained in:
Dan Williams 2011-11-17 17:59:49 -08:00 • committed by James Bottomley
parent 756f173fb5
commit b15ebe0b5d
7 changed files with 23 additions and 60 deletions
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8
drivers/scsi/libsas/sas_event.c
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@ -30,7 +30,7 @@ static void notify_ha_event(struct sas_ha_struct *sas_ha, enum ha_event event)
{
BUG_ON(event >= HA_NUM_EVENTS);
sas_queue_event(event, &sas_ha->event_lock, &sas_ha->pending,
sas_queue_event(event, &sas_ha->pending,
&sas_ha->ha_events[event].work, sas_ha);
}
@ -40,7 +40,7 @@ static void notify_port_event(struct asd_sas_phy *phy, enum port_event event)
BUG_ON(event >= PORT_NUM_EVENTS);
sas_queue_event(event, &ha->event_lock, &phy->port_events_pending,
sas_queue_event(event, &phy->port_events_pending,
&phy->port_events[event].work, ha);
}
@ -50,7 +50,7 @@ static void notify_phy_event(struct asd_sas_phy *phy, enum phy_event event)
BUG_ON(event >= PHY_NUM_EVENTS);
sas_queue_event(event, &ha->event_lock, &phy->phy_events_pending,
sas_queue_event(event, &phy->phy_events_pending,
&phy->phy_events[event].work, ha);
}
@ -62,8 +62,6 @@ int sas_init_events(struct sas_ha_struct *sas_ha)
int i;
spin_lock_init(&sas_ha->event_lock);
for (i = 0; i < HA_NUM_EVENTS; i++) {
INIT_WORK(&sas_ha->ha_events[i].work, sas_ha_event_fns[i]);
sas_ha->ha_events[i].ha = sas_ha;