linux-kernel - [PATCH] siox: constify the struct device

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Date: Mon, 19 Feb 2024 16:49:30 -0300
From: "Ricardo B. Marliere" <ricardo@...liere.net>
To: Thorsten Scherer <t.scherer@...elmann.de>, 
 Uwe Kleine-König <u.kleine-koenig@...gutronix.de>, 
 Pengutronix Kernel Team <kernel@...gutronix.de>
Cc: linux-kernel@...r.kernel.org, 
 Greg Kroah-Hartman <gregkh@...uxfoundation.org>, 
 "Ricardo B. Marliere" <ricardo@...liere.net>
Subject: [PATCH] siox: 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
siox_device_type and siox_master_type variables to be constant structures
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/siox/siox-core.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/siox/siox-core.c b/drivers/siox/siox-core.c
index 561408583b2b..8eca20c2ea9c 100644
--- a/drivers/siox/siox-core.c
+++ b/drivers/siox/siox-core.c
@@ -498,7 +498,7 @@ static void siox_device_release(struct device *dev)
 	kfree(sdevice);
 }

-static struct device_type siox_device_type = {
+static const struct device_type siox_device_type = {
 	.groups = siox_device_groups,
 	.release = siox_device_release,
 };
@@ -676,7 +676,7 @@ static void siox_master_release(struct device *dev)
 	kfree(smaster);
 }

-static struct device_type siox_master_type = {
+static const struct device_type siox_master_type = {
 	.groups = siox_master_groups,
 	.release = siox_master_release,
 };

---
base-commit: b401b621758e46812da61fa58a67c3fd8d91de0d
change-id: 20240219-device_cleanup-siox-82890e4378d0

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