It is possible the driver's remove may have freed the controller if
the remove callback is invoked prior to the async_schedule starting
the reset_work. This patch fixes that by holding a reference on the
controller.
Reported-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Keith Busch <keith.busch@intel.com>
static void nvme_async_probe(void *data, async_cookie_t cookie)
{
struct nvme_dev *dev = data;
+
nvme_reset_ctrl_sync(&dev->ctrl);
flush_work(&dev->ctrl.scan_work);
+ nvme_put_ctrl(&dev->ctrl);
}
static int nvme_probe(struct pci_dev *pdev, const struct pci_device_id *id)
dev_info(dev->ctrl.device, "pci function %s\n", dev_name(&pdev->dev));
+ nvme_get_ctrl(&dev->ctrl);
async_schedule(nvme_async_probe, dev);
return 0;