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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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15
drivers/scsi/libsas/sas_port.c
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@@ -213,8 +213,7 @@ void sas_porte_bytes_dmaed(struct work_struct *work)
container_of(work, struct asd_sas_event, work);
struct asd_sas_phy *phy = ev->phy;
sas_begin_event(PORTE_BYTES_DMAED, &phy->ha->event_lock,
&phy->port_events_pending);
clear_bit(PORTE_BYTES_DMAED, &phy->port_events_pending);
sas_form_port(phy);
}
@@ -227,8 +226,7 @@ void sas_porte_broadcast_rcvd(struct work_struct *work)
unsigned long flags;
u32 prim;
sas_begin_event(PORTE_BROADCAST_RCVD, &phy->ha->event_lock,
&phy->port_events_pending);
clear_bit(PORTE_BROADCAST_RCVD, &phy->port_events_pending);
spin_lock_irqsave(&phy->sas_prim_lock, flags);
prim = phy->sas_prim;
@@ -244,8 +242,7 @@ void sas_porte_link_reset_err(struct work_struct *work)
container_of(work, struct asd_sas_event, work);
struct asd_sas_phy *phy = ev->phy;
sas_begin_event(PORTE_LINK_RESET_ERR, &phy->ha->event_lock,
&phy->port_events_pending);
clear_bit(PORTE_LINK_RESET_ERR, &phy->port_events_pending);
sas_deform_port(phy, 1);
}
@@ -256,8 +253,7 @@ void sas_porte_timer_event(struct work_struct *work)
container_of(work, struct asd_sas_event, work);
struct asd_sas_phy *phy = ev->phy;
sas_begin_event(PORTE_TIMER_EVENT, &phy->ha->event_lock,
&phy->port_events_pending);
clear_bit(PORTE_TIMER_EVENT, &phy->port_events_pending);
sas_deform_port(phy, 1);
}
@@ -268,8 +264,7 @@ void sas_porte_hard_reset(struct work_struct *work)
container_of(work, struct asd_sas_event, work);
struct asd_sas_phy *phy = ev->phy;
sas_begin_event(PORTE_HARD_RESET, &phy->ha->event_lock,
&phy->port_events_pending);
clear_bit(PORTE_HARD_RESET, &phy->port_events_pending);
sas_deform_port(phy, 1);
}