nvmet-fc: fix failing max io queue connections

fc transport is treating NVMET_NR_QUEUES as maximum queue count, e.g.
admin queue plus NVMET_NR_QUEUES-1 io queues.  But NVMET_NR_QUEUES is
the number of io queues, so maximum queue count is really
NVMET_NR_QUEUES+1.

Fix the handling in the target fc transport

Signed-off-by: James Smart <james.smart@broadcom.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

diff --git a/drivers/nvme/target/fc.c b/drivers/nvme/target/fc.c
index 088f072..c48c83d 100644 (file)
--- a/drivers/nvme/target/fc.c
+++ b/drivers/nvme/target/fc.c
@@ -148,7 +148,7 @@ struct nvmet_fc_tgt_assoc {
        u32                             a_id;
        struct nvmet_fc_tgtport         *tgtport;
        struct list_head                a_list;
-       struct nvmet_fc_tgt_queue       *queues[NVMET_NR_QUEUES];
+       struct nvmet_fc_tgt_queue       *queues[NVMET_NR_QUEUES + 1];
        struct kref                     ref;
 };
 
@@ -608,7 +608,7 @@ nvmet_fc_alloc_target_queue(struct nvmet_fc_tgt_assoc *assoc,
        unsigned long flags;
        int ret;
 
-       if (qid >= NVMET_NR_QUEUES)
+       if (qid > NVMET_NR_QUEUES)
                return NULL;
 
        queue = kzalloc((sizeof(*queue) +
@@ -888,7 +888,7 @@ nvmet_fc_delete_target_assoc(struct nvmet_fc_tgt_assoc *assoc)
        int i;
 
        spin_lock_irqsave(&tgtport->lock, flags);
-       for (i = NVMET_NR_QUEUES - 1; i >= 0; i--) {
+       for (i = NVMET_NR_QUEUES; i >= 0; i--) {
                queue = assoc->queues[i];
                if (queue) {
                        if (!nvmet_fc_tgt_q_get(queue))