linux-kernel - [PATCH] nvdimm: make nvdimm_bus

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Message-Id: <20240204-bus_cleanup-nvdimm-v1-1-77ae19fa3e3b@marliere.net>
Date: Sun, 04 Feb 2024 17:20:07 -0300
From: "Ricardo B. Marliere" <ricardo@...liere.net>
To: Dan Williams <dan.j.williams@...el.com>, 
 Vishal Verma <vishal.l.verma@...el.com>, Dave Jiang <dave.jiang@...el.com>, 
 Ira Weiny <ira.weiny@...el.com>
Cc: nvdimm@...ts.linux.dev, linux-kernel@...r.kernel.org, 
 Greg Kroah-Hartman <gregkh@...uxfoundation.org>, 
 "Ricardo B. Marliere" <ricardo@...liere.net>
Subject: [PATCH] nvdimm: make nvdimm_bus_type const

Now that the driver core can properly handle constant struct bus_type,
move the nvdimm_bus_type variable to be a constant structure as well,
placing it into read-only memory which can not be modified at runtime.

Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Suggested-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Signed-off-by: Ricardo B. Marliere <ricardo@...liere.net>
---
 drivers/nvdimm/bus.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/nvdimm/bus.c b/drivers/nvdimm/bus.c
index ef3d0f83318b..508aed017ddc 100644
--- a/drivers/nvdimm/bus.c
+++ b/drivers/nvdimm/bus.c
@@ -271,7 +271,7 @@ EXPORT_SYMBOL_GPL(nvdimm_clear_poison);

 static int nvdimm_bus_match(struct device *dev, struct device_driver *drv);

-static struct bus_type nvdimm_bus_type = {
+static const struct bus_type nvdimm_bus_type = {
 	.name = "nd",
 	.uevent = nvdimm_bus_uevent,
 	.match = nvdimm_bus_match,

---
base-commit: a085a5eb6594a3ebe5c275e9c2c2d341f686c23c
change-id: 20240204-bus_cleanup-nvdimm-91771693bd4d

Best regards,
-- 
Ricardo B. Marliere <ricardo@...liere.net>