[PATCH v3 7/7] nvmem: add a comment about resource management

[Bartosz Golaszewski <brgl@bgdev.pl>]

From: Bartosz Golaszewski <bgolaszewski@baylibre.com>

The fact that part of the resources associated with the nvmem resources
is freed by the release() callback in device_type caused me some
confusion. Add a comment explaining that to nvmem_register().

Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
---
 drivers/nvmem/core.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/nvmem/core.c b/drivers/nvmem/core.c
index 40fe5913c264..6e28f3fddf53 100644
--- a/drivers/nvmem/core.c
+++ b/drivers/nvmem/core.c
@@ -397,6 +397,11 @@ struct nvmem_device *nvmem_register(const struct nvmem_config *config)
 
 	dev_dbg(&nvmem->dev, "Registering nvmem device %s\n", config->name);
 
+	/*
+	 * After calling device_add() we can stop freeing previously
+	 * allocated resources - they'll be freed from nvmem_release()
+	 * when the device's reference count drops to 0.
+	 */
 	rval = device_add(&nvmem->dev);
 	if (rval)
 		goto err_put_device;
-- 
2.25.0