From 0991afbe4b1805e7f0113ef10d7c5f0698a739e4 Mon Sep 17 00:00:00 2001
From: Miquel Raynal <miquel.raynal@bootlin.com>
Date: Tue, 8 Aug 2023 08:29:29 +0200
Subject: [PATCH] nvmem: core: Notify when a new layout is registered

Tell listeners a new layout was introduced and is now available.

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
---
 drivers/nvmem/core.c           | 4 ++++
 include/linux/nvmem-consumer.h | 2 ++
 2 files changed, 6 insertions(+)

--- a/drivers/nvmem/core.c
+++ b/drivers/nvmem/core.c
@@ -772,12 +772,16 @@ int __nvmem_layout_register(struct nvmem
 	list_add(&layout->node, &nvmem_layouts);
 	spin_unlock(&nvmem_layout_lock);
 
+	blocking_notifier_call_chain(&nvmem_notifier, NVMEM_LAYOUT_ADD, layout);
+
 	return 0;
 }
 EXPORT_SYMBOL_GPL(__nvmem_layout_register);
 
 void nvmem_layout_unregister(struct nvmem_layout *layout)
 {
+	blocking_notifier_call_chain(&nvmem_notifier, NVMEM_LAYOUT_REMOVE, layout);
+
 	spin_lock(&nvmem_layout_lock);
 	list_del(&layout->node);
 	spin_unlock(&nvmem_layout_lock);
--- a/include/linux/nvmem-consumer.h
+++ b/include/linux/nvmem-consumer.h
@@ -43,6 +43,8 @@ enum {
 	NVMEM_REMOVE,
 	NVMEM_CELL_ADD,
 	NVMEM_CELL_REMOVE,
+	NVMEM_LAYOUT_ADD,
+	NVMEM_LAYOUT_REMOVE,
 };
 
 #if IS_ENABLED(CONFIG_NVMEM)
