Hi Nick,
On Tue, 9 Oct 2012, 11:47am -0700, Nicholas A. Bellinger wrote:
Hi Jiri, Andrew, Arun & Co,
--8<-- snipped --
Also please have a look below for a few more related items I noticed
while reviewing this patch..
drivers/scsi/qla2xxx/qla_init.c | 5 +++--
1 files changed, 3 insertions(+), 2 deletions(-)
diff --git a/drivers/scsi/qla2xxx/qla_init.c b/drivers/scsi/qla2xxx/qla_init.c
index 799a58b..48fca47 100644
--- a/drivers/scsi/qla2xxx/qla_init.c
+++ b/drivers/scsi/qla2xxx/qla_init.c
@@ -2080,6 +2080,7 @@ qla2x00_configure_hba(scsi_qla_host_t *vha)
uint8_t domain;
char connect_type[22];
struct qla_hw_data *ha = vha->hw;
+ unsigned long flags;
/* Get host addresses. */
rval = qla2x00_get_adapter_id(vha,
@@ -2154,9 +2155,9 @@ qla2x00_configure_hba(scsi_qla_host_t *vha)
vha->d_id.b.area = area;
vha->d_id.b.al_pa = al_pa;
- spin_lock(&ha->vport_slock);
+ spin_lock_irqsave(&ha->vport_slock, flags);
qlt_update_vp_map(vha, SET_AL_PA);
- spin_unlock(&ha->vport_slock);
+ spin_unlock_irqrestore(&ha->vport_slock, flags);
if (!vha->flags.init_done)
ql_log(ql_log_info, vha, 0x2010,
So while looking at other ->vport_slock + qlt_update_vp_map() usage, two
more items caught my eye:
In qla_mid.c:qla24xx_disable_vp() code:
ret = qla24xx_control_vp(vha, VCE_COMMAND_DISABLE_VPS_LOGO_ALL);
atomic_set(&vha->loop_state, LOOP_DOWN);
atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
/* Remove port id from vp target map */
qlt_update_vp_map(vha, RESET_AL_PA);
qla2x00_mark_vp_devices_dead(vha);
atomic_set(&vha->vp_state, VP_FAILED);
AFAICT all callers of qlt_update_vp_map() into qla_target.c code should
be holding ->vport_slock. I'll send out a separate patch for this
shortly.
Makes sense.
And in qla_init.c:qla2x00_init_rings() code:
for (que = 0; que < ha->max_rsp_queues; que++) {
rsp = ha->rsp_q_map[que];
if (!rsp)
continue;
/* Initialize response queue entries */
qla2x00_init_response_q_entries(rsp);
}
spin_lock(&ha->vport_slock);
spin_unlock(&ha->vport_slock);
ha->tgt.atio_ring_ptr = ha->tgt.atio_ring;
ha->tgt.atio_ring_index = 0;
/* Initialize ATIO queue entries */
qlt_init_atio_q_entries(vha);
The usage of ->vport_slock seems to be now either unnecessary, or a
result of some bad merge outside of qla2xxx target mode.
Qlogic folks, can this (leftover..?) usage of ->vport_slock now be
safety removed..?
Yes, this is a left over of code removal and can be safely removed. We
already have a patch queued internally for this.
--Arun
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