[PATCH 1/2] iio: adc: Constify struct iio_map
Christophe JAILLET
christophe.jaillet at wanadoo.fr
Sun Sep 8 04:44:33 PDT 2024
Le 08/09/2024 à 12:45, Jonathan Cameron a écrit :
> On Sat, 7 Sep 2024 19:24:46 +0200
> Christophe JAILLET <christophe.jaillet-39ZsbGIQGT5GWvitb5QawA at public.gmane.org> wrote:
>
>> '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
> Cropping was a bit random, given before and after have different files.
Argh, the 2nd line related to ad74413r.o should be removed. Only the 1st
one is relevant.
Sorry about that.
>
> Anyhow, doesn't matter much, so applied as is.
> Note this is 6.13 material now.
>
> Thanks,
Thanks,
CJ
>
> Jonathan
More information about the linux-arm-kernel
mailing list