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iio: core: make iio_bus_type const

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Now that the driver core can properly handle constant struct bus_type,
move the iio_bus_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>
Suggested-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Ricardo B. Marliere <ricardo@marliere.net>
Acked-by: Nuno Sa <nuno.sa@analog.com>
Link: https://lore.kernel.org/r/20240208-bus_cleanup-iio-v1-1-4a167c3b5fb3@marliere.net
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
This commit is contained in:
Ricardo B. Marliere 2024-02-08 16:37:19 -03:00 committed by Jonathan Cameron
parent 7c28226cd0
commit 89b1b86fc7
2 changed files with 2 additions and 2 deletions
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2
drivers/iio/industrialio-core.c
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@ -42,7 +42,7 @@ static DEFINE_IDA(iio_ida);
static dev_t iio_devt;
#define IIO_DEV_MAX 256
struct bus_type iio_bus_type = {
const struct bus_type iio_bus_type = {
.name = "iio",
};
EXPORT_SYMBOL(iio_bus_type);

2
include/linux/iio/iio.h
View File

@ -669,7 +669,7 @@ DEFINE_GUARD_COND(iio_claim_direct, _try, ({
int iio_device_claim_buffer_mode(struct iio_dev *indio_dev);
void iio_device_release_buffer_mode(struct iio_dev *indio_dev);
extern struct bus_type iio_bus_type;
extern const struct bus_type iio_bus_type;
/**
* iio_device_put() - reference counted deallocation of struct device