Avoid diabling interrupt and holding q_lock for the queue
which is just getting initialized.
With this change, online_queues is also incremented without
lock during queue setup stage.
if Power management nvme_suspend() kicks in during queue setup time,
per nvmeq based q_lock spinlock cannot protect device wide
online_queues variable anyway.
Signed-off-by: Parav Pandit <parav.pan...@avagotech.com>
---
drivers/block/nvme-core.c | 2 --
1 file changed, 2 deletions(-)
diff --git a/drivers/block/nvme-core.c b/drivers/block/nvme-core.c
index 58041c7..7f09e5e 100644
--- a/drivers/block/nvme-core.c
+++ b/drivers/block/nvme-core.c
@@ -1437,14 +1437,12 @@ static void nvme_init_queue(struct nvme_queue *nvmeq,
u16 qid)
{
struct nvme_dev *dev = nvmeq->dev;
- spin_lock_irq(&nvmeq->q_lock);
nvmeq->sq_tail = 0;
nvmeq->cq_head = 0;
nvmeq->cq_phase = 1;
nvmeq->q_db = &dev->dbs[qid * 2 * dev->db_stride];
memset((void *)nvmeq->cqes, 0, CQ_SIZE(nvmeq->q_depth));
dev->online_queues++;
- spin_unlock_irq(&nvmeq->q_lock);
}
static int nvme_create_queue(struct nvme_queue *nvmeq, int qid)
--
1.8.3.1
--
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