counter: constify the struct device_type usage

Since commit aed65af1cc ("drivers: make device_type const"), the driver
core can properly handle constant struct device_type. Move the
counter_device_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@linuxfoundation.org>
Signed-off-by: "Ricardo B. Marliere" <ricardo@marliere.net>
Link: https://lore.kernel.org/r/20240219-device_cleanup-counter-v1-1-24d0316ae815@marliere.net
Signed-off-by: William Breathitt Gray <william.gray@linaro.org>
This commit is contained in:
Ricardo B. Marliere 2024-02-19 16:52:52 -03:00 committed by William Breathitt Gray
parent 6b0828ca8b
commit e0363c0706

View File

@ -49,7 +49,7 @@ static void counter_device_release(struct device *dev)
kfree(container_of(counter, struct counter_device_allochelper, counter));
}
static struct device_type counter_device_type = {
static const struct device_type counter_device_type = {
.name = "counter_device",
.release = counter_device_release,
};