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qla2xxx: Allow vref count to timeout on vport delete.

Browse Source 
Cc: <stable@vger.kernel.org>
Signed-off-by: Joe Carnuccio <joe.carnuccio@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
This commit is contained in:
Joe Carnuccio 2017-03-15 09:48:43 -07:00 committed by Nicholas Bellinger
parent 7d7a743543
commit c4a9b538ab
5 changed files with 16 additions and 10 deletions
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4
drivers/scsi/qla2xxx/qla_attr.c
View File

@ -2154,8 +2154,6 @@ qla24xx_vport_delete(struct fc_vport *fc_vport)
"Timer for the VP[%d] has stopped\n", vha->vp_idx);
}
BUG_ON(atomic_read(&vha->vref_count));
qla2x00_free_fcports(vha);
mutex_lock(&ha->vport_lock);
@ -2166,7 +2164,7 @@ qla24xx_vport_delete(struct fc_vport *fc_vport)
dma_free_coherent(&ha->pdev->dev, vha->gnl.size, vha->gnl.l,
vha->gnl.ldma);
if (vha->qpair->vp_idx == vha->vp_idx) {
if (vha->qpair && vha->qpair->vp_idx == vha->vp_idx) {
if (qla2xxx_delete_qpair(vha, vha->qpair) != QLA_SUCCESS)
ql_log(ql_log_warn, vha, 0x7087,
"Queue Pair delete failed.\n");

6
drivers/scsi/qla2xxx/qla_def.h
View File

@ -4076,6 +4076,7 @@ typedef struct scsi_qla_host {
/* Count of active session/fcport */
int fcport_count;
wait_queue_head_t fcport_waitQ;
wait_queue_head_t vref_waitq;
} scsi_qla_host_t;
struct qla27xx_image_status {
@ -4131,14 +4132,17 @@ struct qla2_sgx {
mb(); \
if (__vha->flags.delete_progress) { \
atomic_dec(&__vha->vref_count); \
wake_up(&__vha->vref_waitq); \
__bail = 1; \
} else { \
__bail = 0; \
} \
} while (0)
#define QLA_VHA_MARK_NOT_BUSY(__vha) \
#define QLA_VHA_MARK_NOT_BUSY(__vha) do { \
atomic_dec(&__vha->vref_count); \
wake_up(&__vha->vref_waitq); \
} while (0) \
#define QLA_QPAIR_MARK_BUSY(__qpair, __bail) do { \
atomic_inc(&__qpair->ref_count); \

1
drivers/scsi/qla2xxx/qla_init.c
View File

@ -5148,6 +5148,7 @@ qla2x00_update_fcports(scsi_qla_host_t *base_vha)
}
}
atomic_dec(&vha->vref_count);
wake_up(&vha->vref_waitq);
}
spin_unlock_irqrestore(&ha->vport_slock, flags);
}

14
drivers/scsi/qla2xxx/qla_mid.c
View File

@ -74,13 +74,14 @@ qla24xx_deallocate_vp_id(scsi_qla_host_t *vha)
* ensures no active vp_list traversal while the vport is removed
* from the queue)
*/
wait_event_timeout(vha->vref_waitq, atomic_read(&vha->vref_count),
10*HZ);
spin_lock_irqsave(&ha->vport_slock, flags);
while (atomic_read(&vha->vref_count)) {
spin_unlock_irqrestore(&ha->vport_slock, flags);
msleep(500);
spin_lock_irqsave(&ha->vport_slock, flags);
if (atomic_read(&vha->vref_count)) {
ql_dbg(ql_dbg_vport, vha, 0xfffa,
"vha->vref_count=%u timeout\n", vha->vref_count.counter);
vha->vref_count = (atomic_t)ATOMIC_INIT(0);
}
list_del(&vha->list);
qlt_update_vp_map(vha, RESET_VP_IDX);
@ -269,6 +270,7 @@ qla2x00_alert_all_vps(struct rsp_que *rsp, uint16_t *mb)
spin_lock_irqsave(&ha->vport_slock, flags);
atomic_dec(&vha->vref_count);
wake_up(&vha->vref_waitq);
}
i++;
}

1
drivers/scsi/qla2xxx/qla_os.c
View File

@ -4268,6 +4268,7 @@ struct scsi_qla_host *qla2x00_create_host(struct scsi_host_template *sht,
spin_lock_init(&vha->work_lock);
spin_lock_init(&vha->cmd_list_lock);
init_waitqueue_head(&vha->fcport_waitQ);
init_waitqueue_head(&vha->vref_waitq);
vha->gnl.size = sizeof(struct get_name_list_extended) *
(ha->max_loop_id + 1);