[PATCH AUTOSEL 5.15 30/34] Input: make input_class constant

[Sasha Levin]

From: "Ricardo B. Marliere" <ricardo@xxxxxxxxxxxx>

[ 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@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Ricardo B. Marliere <ricardo@xxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20240305-class_cleanup-input-v1-1-0c3d950c25db@xxxxxxxxxxxx
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@xxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 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 5ca3f11d2d759..5c26f1e2c25a0 100644
--- a/drivers/input/input.c
+++ b/drivers/input/input.c
@@ -1901,7 +1901,7 @@ 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 0354b298d8749..6cc4bad37f40e 100644
--- a/include/linux/input.h
+++ b/include/linux/input.h
@@ -512,7 +512,7 @@ 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