Received-SPF: pass (google.com: domain of linux-kernel+bounces-124929-linux.lists.archive=gmail.com@vger.kernel.org designates 2604:1380:45d1:ec00::1 as permitted sender) client-ip=2604:1380:45d1:ec00::1;
From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org,
	stable@vger.kernel.org
Cc: "Ricardo B. Marliere" <ricardo@marliere.net>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	Dmitry Torokhov <dmitry.torokhov@gmail.com>,
	Sasha Levin <sashal@kernel.org>,
	linux-input@vger.kernel.org
Subject: [PATCH AUTOSEL 6.1 45/52] Input: make input_class constant
Date: Fri, 29 Mar 2024 08:45:39 -0400
Message-ID: <20240329124605.3091273-45-sashal@kernel.org>
In-Reply-To: <20240329124605.3091273-1-sashal@kernel.org>
References: <20240329124605.3091273-1-sashal@kernel.org>
Precedence: bulk
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit

From: "Ricardo B. Marliere" <ricardo@marliere.net>

[ Upstream commit a4735d40a5da96a637af6e5bf9f6ec8b9d996acd ]

Since commit 43a7206b0963 ("driver core: class: make class_register() take
a const *"), the driver core allows for struct class to be in read-only
memory, so move the input_class structure to be declared at build time
placing it into read-only memory, instead of having to be dynamically
allocated at boot time.

Suggested-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Ricardo B. Marliere <ricardo@marliere.net>
Link: https://lore.kernel.org/r/20240305-class_cleanup-input-v1-1-0c3d950c25db@marliere.net
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/input/input.c | 2 +-
 include/linux/input.h | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/input/input.c b/drivers/input/input.c
index 8b6a922f84702..067a9b1d5befc 100644
--- a/drivers/input/input.c
+++ b/drivers/input/input.c
@@ -1918,7 +1918,7 @@ static char *input_devnode(struct device *dev, umode_t *mode)
 	return kasprintf(GFP_KERNEL, "input/%s", dev_name(dev));
 }
 
-struct class input_class = {
+const struct class input_class = {
 	.name		= "input",
 	.devnode	= input_devnode,
 };
diff --git a/include/linux/input.h b/include/linux/input.h
index 49790c1bd2c43..fa656f30081f6 100644
--- a/include/linux/input.h
+++ b/include/linux/input.h
@@ -514,7 +514,7 @@ void input_enable_softrepeat(struct input_dev *dev, int delay, int period);
 
 bool input_device_enabled(struct input_dev *dev);
 
-extern struct class input_class;
+extern const struct class input_class;
 
 /**
  * struct ff_device - force-feedback part of an input device
-- 
2.43.0