diff options
Diffstat (limited to 'drivers/block')
| -rw-r--r-- | drivers/block/nvme-core.c | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/drivers/block/nvme-core.c b/drivers/block/nvme-core.c index 75049532df96..a51126129784 100644 --- a/drivers/block/nvme-core.c +++ b/drivers/block/nvme-core.c @@ -1140,8 +1140,9 @@ static void nvme_disable_queue(struct nvme_dev *dev, int qid) irq_set_affinity_hint(vector, NULL); free_irq(vector, nvmeq); - /* Don't tell the adapter to delete the admin queue */ - if (qid) { + /* Don't tell the adapter to delete the admin queue. + * Don't tell a removed adapter to delete IO queues. */ + if (qid && readl(&dev->bar->csts) != -1) { adapter_delete_sq(dev, qid); adapter_delete_cq(dev, qid); } @@ -2052,12 +2053,18 @@ static int nvme_dev_map(struct nvme_dev *dev) dev->bar = ioremap(pci_resource_start(pdev, 0), 8192); if (!dev->bar) goto disable; - + if (readl(&dev->bar->csts) == -1) { + result = -ENODEV; + goto unmap; + } dev->db_stride = 1 << NVME_CAP_STRIDE(readq(&dev->bar->cap)); dev->dbs = ((void __iomem *)dev->bar) + 4096; return 0; + unmap: + iounmap(dev->bar); + dev->bar = NULL; disable: pci_release_regions(pdev); disable_pci: |