From: Keith Busch Date: Tue, 23 Jan 2018 16:16:19 +0000 (-0700) Subject: nvme-pci: Fix queue double allocations X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=62314e405fa101dbb82563394f9dfc225e3f1167;p=linux.git nvme-pci: Fix queue double allocations The queue count says the highest queue that's been allocated, so don't reallocate a queue lower than that. Fixes: 147b27e4bd0 ("nvme-pci: allocate device queues storage space at probe") Signed-off-by: Keith Busch Signed-off-by: Christoph Hellwig --- diff --git a/drivers/nvme/host/pci.c b/drivers/nvme/host/pci.c index a2ffb557b616f..c46c239cc1ff0 100644 --- a/drivers/nvme/host/pci.c +++ b/drivers/nvme/host/pci.c @@ -1384,6 +1384,9 @@ static int nvme_alloc_queue(struct nvme_dev *dev, int qid, { struct nvme_queue *nvmeq = &dev->queues[qid]; + if (dev->ctrl.queue_count > qid) + return 0; + nvmeq->cqes = dma_zalloc_coherent(dev->dev, CQ_SIZE(depth), &nvmeq->cq_dma_addr, GFP_KERNEL); if (!nvmeq->cqes)