[RFC] API change - Switch all struct device to constant #27399
Description
Introduction
Problem description
struct device instances are currently in ram, but most of their attribute never change at runtime. The only one being touched is a legacy hack that has to be properly fixed. At this point all device instance could be made constant to save RAM.
Proposed change
Just add the const qualifier to all struct device instance.
Detailed RFC
Proposed change (Detailed)
- Replace the driver_api trick in kernel/device.c by a better solution
- add const qualifier to all device instance
- make all isr taking a const parameter
Dependencies
Concerns and Unresolved Questions
None
Alternatives
Keep what we have which is under-optimized solution.