The event pool and CRQ used to be separate entities of the adapter host
structure and as such were allocated and freed independently of each
other. Recent work as defined a generic queue structure with an event
pool specific to each queue. As such the event pool for each queue
shouldn't be allocated/freed independently, but instead performed as
part of the queue allocation/free routines.
Move the calls to ibmvfc_event_pool_{init|free} into
ibmvfc_{alloc|free}_queue respectively. The only functional change here
is that the CRQ cannot be released in ibmvfc_remove until after the
event pool has been successfully purged since releasing the queue will
also free the event pool.
Signed-off-by: Tyrel Datwyler <tyreld@xxxxxxxxxxxxx>
---
drivers/scsi/ibmvscsi/ibmvfc.c | 18 ++++++++----------
1 file changed, 8 insertions(+), 10 deletions(-)
diff --git a/drivers/scsi/ibmvscsi/ibmvfc.c b/drivers/scsi/ibmvscsi/ibmvfc.c
index cd9273a5fadb..9330f5a65a7e 100644
--- a/drivers/scsi/ibmvscsi/ibmvfc.c
+++ b/drivers/scsi/ibmvscsi/ibmvfc.c
@@ -807,6 +807,8 @@ static void ibmvfc_free_queue(struct ibmvfc_host *vhost,
dma_unmap_single(dev, queue->msg_token, PAGE_SIZE, DMA_BIDIRECTIONAL);
free_page((unsigned long)queue->msgs.handle);
queue->msgs.handle = NULL;
+
+ ibmvfc_free_event_pool(vhost, queue);
}
/**
@@ -5019,6 +5021,10 @@ static int ibmvfc_alloc_queue(struct ibmvfc_host *vhost,
switch (fmt) {
case IBMVFC_CRQ_FMT:
fmt_size = sizeof(*queue->msgs.crq);
+ if (ibmvfc_init_event_pool(vhost, queue)) {
+ dev_err(dev, "Couldn't initialize event pool.\n");
+ return -ENOMEM;
+ }
break;
case IBMVFC_ASYNC_FMT:
fmt_size = sizeof(*queue->msgs.async);
@@ -5333,13 +5339,8 @@ static int ibmvfc_probe(struct vio_dev *vdev, const struct vio_device_id *id)
goto kill_kthread;
}
- if ((rc = ibmvfc_init_event_pool(vhost, &vhost->crq))) {
- dev_err(dev, "Couldn't initialize event pool. rc=%d\n", rc);
- goto release_crq;
- }
-
if ((rc = scsi_add_host(shost, dev)))
- goto release_event_pool;
+ goto release_crq;
fc_host_dev_loss_tmo(shost) = IBMVFC_DEV_LOSS_TMO;
@@ -5362,8 +5363,6 @@ static int ibmvfc_probe(struct vio_dev *vdev, const struct vio_device_id *id)
remove_shost:
scsi_remove_host(shost);
-release_event_pool:
- ibmvfc_free_event_pool(vhost, &vhost->crq);
release_crq:
ibmvfc_release_crq_queue(vhost);
kill_kthread:
@@ -5398,7 +5397,6 @@ static int ibmvfc_remove(struct vio_dev *vdev)
spin_unlock_irqrestore(vhost->host->host_lock, flags);
ibmvfc_wait_while_resetting(vhost);
- ibmvfc_release_crq_queue(vhost);
kthread_stop(vhost->work_thread);
fc_remove_host(vhost->host);
scsi_remove_host(vhost->host);
@@ -5408,7 +5406,7 @@ static int ibmvfc_remove(struct vio_dev *vdev)
list_splice_init(&vhost->purge, &purge);
spin_unlock_irqrestore(vhost->host->host_lock, flags);
ibmvfc_complete_purge(&purge);
- ibmvfc_free_event_pool(vhost, &vhost->crq);
+ ibmvfc_release_crq_queue(vhost);
ibmvfc_free_mem(vhost);
spin_lock(&ibmvfc_driver_lock);
--
2.27.0
