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path: root/drivers/nvme/host/core.c
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Diffstat (limited to 'drivers/nvme/host/core.c')
-rw-r--r--drivers/nvme/host/core.c30
1 files changed, 26 insertions, 4 deletions
diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c
index bd8f598d0c37..899bb4181495 100644
--- a/drivers/nvme/host/core.c
+++ b/drivers/nvme/host/core.c
@@ -1518,7 +1518,7 @@ static int nvme_scan_ns_list(struct nvme_ctrl *ctrl, unsigned nn)
return ret;
}
-static void __nvme_scan_namespaces(struct nvme_ctrl *ctrl, unsigned nn)
+static void nvme_scan_ns_sequential(struct nvme_ctrl *ctrl, unsigned nn)
{
struct nvme_ns *ns, *next;
unsigned i;
@@ -1534,11 +1534,16 @@ static void __nvme_scan_namespaces(struct nvme_ctrl *ctrl, unsigned nn)
}
}
-void nvme_scan_namespaces(struct nvme_ctrl *ctrl)
+static void nvme_scan_work(struct work_struct *work)
{
+ struct nvme_ctrl *ctrl =
+ container_of(work, struct nvme_ctrl, scan_work);
struct nvme_id_ctrl *id;
unsigned nn;
+ if (ctrl->state != NVME_CTRL_LIVE)
+ return;
+
if (nvme_identify_ctrl(ctrl, &id))
return;
@@ -1549,13 +1554,26 @@ void nvme_scan_namespaces(struct nvme_ctrl *ctrl)
if (!nvme_scan_ns_list(ctrl, nn))
goto done;
}
- __nvme_scan_namespaces(ctrl, le32_to_cpup(&id->nn));
+ nvme_scan_ns_sequential(ctrl, nn);
done:
list_sort(NULL, &ctrl->namespaces, ns_cmp);
mutex_unlock(&ctrl->namespaces_mutex);
kfree(id);
+
+ if (ctrl->ops->post_scan)
+ ctrl->ops->post_scan(ctrl);
}
-EXPORT_SYMBOL_GPL(nvme_scan_namespaces);
+
+void nvme_queue_scan(struct nvme_ctrl *ctrl)
+{
+ /*
+ * Do not queue new scan work when a controller is reset during
+ * removal.
+ */
+ if (ctrl->state == NVME_CTRL_LIVE)
+ schedule_work(&ctrl->scan_work);
+}
+EXPORT_SYMBOL_GPL(nvme_queue_scan);
void nvme_remove_namespaces(struct nvme_ctrl *ctrl)
{
@@ -1597,6 +1615,9 @@ static void nvme_release_instance(struct nvme_ctrl *ctrl)
void nvme_uninit_ctrl(struct nvme_ctrl *ctrl)
{
+ flush_work(&ctrl->scan_work);
+ nvme_remove_namespaces(ctrl);
+
device_destroy(nvme_class, MKDEV(nvme_char_major, ctrl->instance));
spin_lock(&dev_list_lock);
@@ -1640,6 +1661,7 @@ int nvme_init_ctrl(struct nvme_ctrl *ctrl, struct device *dev,
ctrl->dev = dev;
ctrl->ops = ops;
ctrl->quirks = quirks;
+ INIT_WORK(&ctrl->scan_work, nvme_scan_work);
ret = nvme_set_instance(ctrl);
if (ret)