linux-kernel - [PATCH] mfd: core: constify the struct device

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Message-Id: <20240219-device_cleanup-mfd-v1-1-e4eef5ed2da8@marliere.net>
Date: Mon, 19 Feb 2024 16:51:10 -0300
From: "Ricardo B. Marliere" <ricardo@...liere.net>
To: Lee Jones <lee@...nel.org>
Cc: linux-kernel@...r.kernel.org, 
 Greg Kroah-Hartman <gregkh@...uxfoundation.org>, 
 "Ricardo B. Marliere" <ricardo@...liere.net>
Subject: [PATCH] mfd: core: constify the struct device_type usage

Since commit aed65af1cc2f ("drivers: make device_type const"), the driver
core can properly handle constant struct device_type. Move the mfd_dev_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>
Signed-off-by: Ricardo B. Marliere <ricardo@...liere.net>
---
 drivers/mfd/mfd-core.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/mfd/mfd-core.c b/drivers/mfd/mfd-core.c
index 2b85509a90fc..6ad5c93027af 100644
--- a/drivers/mfd/mfd-core.c
+++ b/drivers/mfd/mfd-core.c
@@ -29,7 +29,7 @@ struct mfd_of_node_entry {
 	struct device_node *np;
 };

-static struct device_type mfd_dev_type = {
+static const struct device_type mfd_dev_type = {
 	.name	= "mfd_device",
 };

---
base-commit: d5132d176d6f21742ac67fd311ccc61fe830e999
change-id: 20240219-device_cleanup-mfd-885cbab2befe

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