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From:   Miquel Raynal <miquel.raynal@bootlin.com>
To:     Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Cc:     Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        Thomas Petazzoni <thomas.petazzoni@bootlin.com>,
        Robert Marko <robert.marko@sartura.hr>,
        Luka Perkov <luka.perkov@sartura.hr>,
        Michael Walle <michael@walle.cc>,
        <linux-kernel@vger.kernel.org>,
        Randy Dunlap <rdunlap@infradead.org>,
        Chen-Yu Tsai <wenst@chromium.org>,
        Daniel Golle <daniel@makrotopia.org>,
        =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl>,
        Miquel Raynal <miquel.raynal@bootlin.com>
Subject: [PATCH v9 4/7] nvmem: core: Notify when a new layout is registered
Date:   Tue,  8 Aug 2023 08:29:29 +0200
Message-Id: <20230808062932.150588-5-miquel.raynal@bootlin.com>
In-Reply-To: <20230808062932.150588-1-miquel.raynal@bootlin.com>
References: <20230808062932.150588-1-miquel.raynal@bootlin.com>
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Tell listeners a new layout was introduced and is now available.

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

diff --git a/drivers/nvmem/core.c b/drivers/nvmem/core.c
index 257328887263..4fb6d4d7fe40 100644
--- a/drivers/nvmem/core.c
+++ b/drivers/nvmem/core.c
@@ -772,12 +772,16 @@ int __nvmem_layout_register(struct nvmem_layout *layout, struct module *owner)
 	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);
diff --git a/include/linux/nvmem-consumer.h b/include/linux/nvmem-consumer.h
index 27373024856d..4523e4e83319 100644
--- 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)
-- 
2.34.1