scsi: qla2xxx: remove irq_affinity_notifier

Now that qla2xxx uses the IRQ layer affinity assignment, affinity won't
change over the life time of a device and the notifiers are useless.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

2 files changed, 0 insertions, 74 deletions

diff --git a/drivers/scsi/qla2xxx/qla_def.h b/drivers/scsi/qla2xxx/qla_def.h
index 69587a21cb06..1549aace296a 100644
--- a/drivers/scsi/qla2xxx/qla_def.h
+++ b/drivers/scsi/qla2xxx/qla_def.h
@@ -2754,7 +2754,6 @@ struct qla_msix_entry {
         uint16_t entry;
         char name[30];
         void *handle;
-        struct irq_affinity_notify irq_notify;
         int cpuid;
 };
 
diff --git a/drivers/scsi/qla2xxx/qla_isr.c b/drivers/scsi/qla2xxx/qla_isr.c
index e2ef303b2bcf..5815403d1d65 100644
--- a/drivers/scsi/qla2xxx/qla_isr.c
+++ b/drivers/scsi/qla2xxx/qla_isr.c
@@ -18,10 +18,6 @@ static void qla2x00_status_entry(scsi_qla_host_t *, struct rsp_que *, void *);
 static void qla2x00_status_cont_entry(struct rsp_que *, sts_cont_entry_t *);
 static void qla2x00_error_entry(scsi_qla_host_t *, struct rsp_que *,
         sts_entry_t *);
-static void qla_irq_affinity_notify(struct irq_affinity_notify *,
-    const cpumask_t *);
-static void qla_irq_affinity_release(struct kref *);
-
 
 /**
  * qla2100_intr_handler() - Process interrupts for the ISP2100 and ISP2200.
@@ -2571,14 +2567,6 @@ void qla24xx_process_response_queue(struct scsi_qla_host *vha,
         if (!vha->flags.online)
                 return;
 
-        if (rsp->msix && rsp->msix->cpuid != smp_processor_id()) {
-                /* if kernel does not notify qla of IRQ's CPU change,
-                 * then set it here.
-                 */
-                rsp->msix->cpuid = smp_processor_id();
-                ha->tgt.rspq_vector_cpuid = rsp->msix->cpuid;
-        }
-
         while (rsp->ring_ptr->signature != RESPONSE_PROCESSED) {
                 pkt = (struct sts_entry_24xx *)rsp->ring_ptr;
 
@@ -3075,9 +3063,6 @@ qla24xx_enable_msix(struct qla_hw_data *ha, struct rsp_que *rsp)
                 qentry->have_irq = 0;
                 qentry->in_use = 0;
                 qentry->handle = NULL;
-                qentry->irq_notify.notify  = qla_irq_affinity_notify;
-                qentry->irq_notify.release = qla_irq_affinity_release;
-                qentry->cpuid = -1;
         }
 
         /* Enable MSI-X vectors for the base queue */
@@ -3099,18 +3084,6 @@ qla24xx_enable_msix(struct qla_hw_data *ha, struct rsp_que *rsp)
                         goto msix_register_fail;
                 qentry->have_irq = 1;
                 qentry->in_use = 1;
-
-                /* Register for CPU affinity notification. */
-                irq_set_affinity_notifier(qentry->vector, &qentry->irq_notify);
-
-                /* Schedule work (ie. trigger a notification) to read cpu
-                 * mask for this specific irq.
-                 * kref_get is required because
-                * irq_affinity_notify() will do
-                * kref_put().
-                */
-                kref_get(&qentry->irq_notify.kref);
-                schedule_work(&qentry->irq_notify.work);
         }
 
         /*
@@ -3307,49 +3280,3 @@ int qla25xx_request_irq(struct qla_hw_data *ha, struct qla_qpair *qpair,
         msix->handle = qpair;
         return ret;
 }
-
-
-/* irq_set_affinity/irqbalance will trigger notification of cpu mask update */
-static void qla_irq_affinity_notify(struct irq_affinity_notify *notify,
-        const cpumask_t *mask)
-{
-        struct qla_msix_entry *e =
-                container_of(notify, struct qla_msix_entry, irq_notify);
-        struct qla_hw_data *ha;
-        struct scsi_qla_host *base_vha;
-        struct rsp_que *rsp = e->handle;
-
-        /* user is recommended to set mask to just 1 cpu */
-        e->cpuid = cpumask_first(mask);
-
-        ha = rsp->hw;
-        base_vha = pci_get_drvdata(ha->pdev);
-
-        ql_dbg(ql_dbg_init, base_vha, 0xffff,
-            "%s: host %ld : vector %d cpu %d \n", __func__,
-            base_vha->host_no, e->vector, e->cpuid);
-
-        if (e->have_irq) {
-                if ((IS_QLA83XX(ha) || IS_QLA27XX(ha)) &&
-                    (e->entry == QLA83XX_RSPQ_MSIX_ENTRY_NUMBER)) {
-                        ha->tgt.rspq_vector_cpuid = e->cpuid;
-                        ql_dbg(ql_dbg_init, base_vha, 0xffff,
-                            "%s: host%ld: rspq vector %d cpu %d  runtime change\n",
-                            __func__, base_vha->host_no, e->vector, e->cpuid);
-                }
-        }
-}
-
-static void qla_irq_affinity_release(struct kref *ref)
-{
-        struct irq_affinity_notify *notify =
-                container_of(ref, struct irq_affinity_notify, kref);
-        struct qla_msix_entry *e =
-                container_of(notify, struct qla_msix_entry, irq_notify);
-        struct rsp_que *rsp = e->handle;
-        struct scsi_qla_host *base_vha = pci_get_drvdata(rsp->hw->pdev);
-
-        ql_dbg(ql_dbg_init, base_vha, 0xffff,
-                "%s: host%ld: vector %d cpu %d\n", __func__,
-            base_vha->host_no, e->vector, e->cpuid);
-}