> For things like CPUs, generic code will register the class, but other
> architecture-specific or otherwise configurable drivers may register
> auxillary drivers, that look like:
>
> struct sysdev_driver {
> struct list_head entry;
> int (*add)(struct sys_device *);
> int (*remove)(struct sys_device *);
> int (*shutdown)(struct sys_device *);
> int (*suspend)(struct sys_device *, u32 state);
> int (*resume)(struct sys_device *);
> };
System devices may be special, but they should not be so special not
to require u32 level. All current system devices need to be
suspended last, but that's pure coincidence, I believe.
As mikpe noted, hierarchy is still needed between "system" devices:
nmi watchdog depends on lapic...
Pavel
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