diff options
| author | Christophe JAILLET <christophe.jaillet@wanadoo.fr> | 2024-09-07 19:24:46 +0200 |
|---|---|---|
| committer | Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2024-09-30 09:21:02 +0100 |
| commit | faf178607772f28006e403d7bab6c4217d4ee447 (patch) | |
| tree | 18237e07d024c372805d2bfe6b86d32b19622f53 /include/linux | |
| parent | 482447fd6f20b9b04a36e0555f67d646be875392 (diff) | |
iio: adc: Constify struct iio_map
'struct iio_map' are not modified in these drivers.
Constifying this structure moves some data to a read-only section, so
increase overall security.
In order to do it, the prototype of iio_map_array_register() and
devm_iio_map_array_register(), and a few structures that hold a
"struct iio_map *" need to be adjusted.
On a x86_64, with allmodconfig, as an example:
Before:
======
text data bss dec hex filename
21086 760 0 21846 5556 drivers/iio/adc/axp20x_adc.o
After:
=====
text data bss dec hex filename
21470 360 0 21830 5546 drivers/iio/adc/axp20x_adc.o
33842 1697 384 35923 8c53 drivers/iio/addac/ad74413r.o
--
Compile tested only
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Link: https://patch.msgid.link/5729dc3cc3892ecf0d8ea28c5f7307b34e27493e.1725729801.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/iio/driver.h | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/include/linux/iio/driver.h b/include/linux/iio/driver.h index 7a157ed218f6..7f8b55551ed0 100644 --- a/include/linux/iio/driver.h +++ b/include/linux/iio/driver.h @@ -18,7 +18,7 @@ struct iio_map; * @map: array of mappings specifying association of channel with client */ int iio_map_array_register(struct iio_dev *indio_dev, - struct iio_map *map); + const struct iio_map *map); /** * iio_map_array_unregister() - tell the core to remove consumer mappings for @@ -38,6 +38,7 @@ int iio_map_array_unregister(struct iio_dev *indio_dev); * handle de-registration of the IIO map object when the device's refcount goes to * zero. */ -int devm_iio_map_array_register(struct device *dev, struct iio_dev *indio_dev, struct iio_map *maps); +int devm_iio_map_array_register(struct device *dev, struct iio_dev *indio_dev, + const struct iio_map *maps); #endif |