[PATCH 6.12 26/35] nvmem: layouts: fix automatic module loading

[Greg Kroah-Hartman <gregkh@linuxfoundation.org>]

6.12-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Michael Walle <mwalle@kernel.org>

commit 810b790033ccc795d55cbef3927668fd01efdfdf upstream.

To support loading of a layout module automatically the MODALIAS
variable in the uevent is needed. Add it.

Fixes: fc29fd821d9a ("nvmem: core: Rework layouts to become regular devices")
Cc: stable@vger.kernel.org
Signed-off-by: Michael Walle <mwalle@kernel.org>
Reviewed-by: Miquel Raynal <miquel.raynal@bootlin.com>
Signed-off-by: Srinivas Kandagatla <srini@kernel.org>
Link: https://lore.kernel.org/r/20250912131347.303345-2-srini@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/nvmem/layouts.c |   13 +++++++++++++
 1 file changed, 13 insertions(+)

--- a/drivers/nvmem/layouts.c
+++ b/drivers/nvmem/layouts.c
@@ -45,11 +45,24 @@ static void nvmem_layout_bus_remove(stru
 	return drv->remove(layout);
 }
 
+static int nvmem_layout_bus_uevent(const struct device *dev,
+				   struct kobj_uevent_env *env)
+{
+	int ret;
+
+	ret = of_device_uevent_modalias(dev, env);
+	if (ret != ENODEV)
+		return ret;
+
+	return 0;
+}
+
 static const struct bus_type nvmem_layout_bus_type = {
 	.name		= "nvmem-layout",
 	.match		= nvmem_layout_bus_match,
 	.probe		= nvmem_layout_bus_probe,
 	.remove		= nvmem_layout_bus_remove,
+	.uevent		= nvmem_layout_bus_uevent,
 };
 
 int __nvmem_layout_driver_register(struct nvmem_layout_driver *drv,