diff options
Diffstat (limited to 'drivers/nvdimm/nd_virtio.c')
| -rw-r--r-- | drivers/nvdimm/nd_virtio.c | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/drivers/nvdimm/nd_virtio.c b/drivers/nvdimm/nd_virtio.c index 1f8c667c6f1e..c3f07be4aa22 100644 --- a/drivers/nvdimm/nd_virtio.c +++ b/drivers/nvdimm/nd_virtio.c @@ -44,6 +44,15 @@ static int virtio_pmem_flush(struct nd_region *nd_region) unsigned long flags; int err, err1; + /* + * Don't bother to submit the request to the device if the device is + * not activated. + */ + if (vdev->config->get_status(vdev) & VIRTIO_CONFIG_S_NEEDS_RESET) { + dev_info(&vdev->dev, "virtio pmem device needs a reset\n"); + return -EIO; + } + might_sleep(); req_data = kmalloc(sizeof(*req_data), GFP_KERNEL); if (!req_data) @@ -88,7 +97,7 @@ static int virtio_pmem_flush(struct nd_region *nd_region) dev_info(&vdev->dev, "failed to send command to virtio pmem device\n"); err = -EIO; } else { - /* A host repsonse results in "host_ack" getting called */ + /* A host response results in "host_ack" getting called */ wait_event(req_data->host_acked, req_data->done); err = le32_to_cpu(req_data->resp.ret); } @@ -123,4 +132,5 @@ int async_pmem_flush(struct nd_region *nd_region, struct bio *bio) return 0; }; EXPORT_SYMBOL_GPL(async_pmem_flush); +MODULE_DESCRIPTION("Virtio Persistent Memory Driver"); MODULE_LICENSE("GPL"); |