NVMe: Correct uses of INIT_WORK

We need to initialise the work_struct when we initialise the rest of the
struct nvme_dev, otherwise we'll hit a lockdep warning when we remove
the device.  Use PREPARE_WORK to change the function pointer instead
of INIT_WORK.

Signed-off-by: Matthew Wilcox <matthew.r.wilcox@intel.com>

diff --git a/drivers/block/nvme-core.c b/drivers/block/nvme-core.c
index 5ffc269..2372809 100644 (file)
--- a/drivers/block/nvme-core.c
+++ b/drivers/block/nvme-core.c
@@ -1075,7 +1075,7 @@ static void nvme_abort_cmd(int cmdid, struct nvme_queue *nvmeq)
                dev_warn(&dev->pci_dev->dev,
                        "I/O %d QID %d timeout, reset controller\n", cmdid,
                                                                nvmeq->qid);
-               INIT_WORK(&dev->reset_work, nvme_reset_failed_dev);
+               PREPARE_WORK(&dev->reset_work, nvme_reset_failed_dev);
                queue_work(nvme_workq, &dev->reset_work);
                return;
        }
@@ -1757,7 +1757,7 @@ static int nvme_kthread(void *data)
                                list_del_init(&dev->node);
                                dev_warn(&dev->pci_dev->dev,
                                        "Failed status, reset controller\n");
-                               INIT_WORK(&dev->reset_work,
+                               PREPARE_WORK(&dev->reset_work,
                                                        nvme_reset_failed_dev);
                                queue_work(nvme_workq, &dev->reset_work);
                                continue;
@@ -2460,7 +2460,7 @@ static int nvme_dev_resume(struct nvme_dev *dev)
                return ret;
        if (ret == -EBUSY) {
                spin_lock(&dev_list_lock);
-               INIT_WORK(&dev->reset_work, nvme_remove_disks);
+               PREPARE_WORK(&dev->reset_work, nvme_remove_disks);
                queue_work(nvme_workq, &dev->reset_work);
                spin_unlock(&dev_list_lock);
        }
@@ -2507,6 +2507,7 @@ static int nvme_probe(struct pci_dev *pdev, const struct pci_device_id *id)
                goto free;
 
        INIT_LIST_HEAD(&dev->namespaces);
+       INIT_WORK(&dev->reset_work, nvme_reset_failed_dev);
        dev->pci_dev = pdev;
        pci_set_drvdata(pdev, dev);
        result = nvme_set_instance(dev);
@@ -2605,7 +2606,7 @@ static int nvme_resume(struct device *dev)
        struct nvme_dev *ndev = pci_get_drvdata(pdev);
 
        if (nvme_dev_resume(ndev) && !work_busy(&ndev->reset_work)) {
-               INIT_WORK(&ndev->reset_work, nvme_reset_failed_dev);
+               PREPARE_WORK(&ndev->reset_work, nvme_reset_failed_dev);
                queue_work(nvme_workq, &ndev->reset_work);
        }
        return 0;