linux-kernel - [PATCH] w1: Use container_of_const() when all types are const

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Message-ID: <20251126171841.72379-2-krzysztof.kozlowski@oss.qualcomm.com>
Date: Wed, 26 Nov 2025 18:18:42 +0100
From: Krzysztof Kozlowski <krzysztof.kozlowski@....qualcomm.com>
To: Krzysztof Kozlowski <krzk@...nel.org>, linux-kernel@...r.kernel.org
Cc: Krzysztof Kozlowski <krzysztof.kozlowski@....qualcomm.com>
Subject: [PATCH] w1: Use container_of_const() when all types are const

Use container_of_const(), which is preferred over container_of(), when
the argument 'ptr' and returned pointer are already const, for better
code safety and readability.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@....qualcomm.com>
---
 drivers/w1/w1.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/w1/w1.c b/drivers/w1/w1.c
index 002d2639aa12..3b48d15390be 100644
--- a/drivers/w1/w1.c
+++ b/drivers/w1/w1.c
@@ -575,11 +575,11 @@ static int w1_uevent(const struct device *dev, struct kobj_uevent_env *env)
 	int err = 0;
 
 	if (dev->driver == &w1_master_driver) {
-		md = container_of(dev, struct w1_master, dev);
+		md = container_of_const(dev, struct w1_master, dev);
 		event_owner = "master";
 		name = md->name;
 	} else if (dev->driver == &w1_slave_driver) {
-		sl = container_of(dev, struct w1_slave, dev);
+		sl = container_of_const(dev, struct w1_slave, dev);
 		event_owner = "slave";
 		name = sl->name;
 	} else {
-- 
2.48.1