[PATCH] nvme: add comment to not use kobj_to_dev()

[Chaitanya Kulkarni]

Add a comment in nvme_ns_id_attrs_are_visible() and
nvme_dev_attrs_are_visible() not to replace container_of() with
kobj_to_dev(). Since use of kobj_to_dev() makes code harder to read.

Suggested-by: Keith Busch <kbusch at kernel.org>
Signed-off-by: Chaitanya Kulkarni <chaitanya.kulkarni at wdc.com>
---
 drivers/nvme/host/core.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c
index 14d96ee4d341..559637ebda25 100644
--- a/drivers/nvme/host/core.c
+++ b/drivers/nvme/host/core.c
@@ -3191,6 +3191,7 @@ static struct attribute *nvme_ns_id_attrs[] = {
 static umode_t nvme_ns_id_attrs_are_visible(struct kobject *kobj,
 		struct attribute *a, int n)
 {
+	/* Don't use kobj_to_dev(), since it makes code harder to read. */
 	struct device *dev = container_of(kobj, struct device, kobj);
 	struct nvme_ns_ids *ids = &dev_to_ns_head(dev)->ids;
 
@@ -3463,6 +3464,7 @@ static struct attribute *nvme_dev_attrs[] = {
 static umode_t nvme_dev_attrs_are_visible(struct kobject *kobj,
 		struct attribute *a, int n)
 {
+	/* Don't use kobj_to_dev(), since it makes code harder to read. */
 	struct device *dev = container_of(kobj, struct device, kobj);
 	struct nvme_ctrl *ctrl = dev_get_drvdata(dev);
 
-- 
2.22.1