Hello Greg and all,

Thus wrote Greg KH ([email protected]):

> Please do not do that. There are valid kernel apis to grant access to
> registers easily,

the most simple case would be a "reset reason" register within the
chip's address space. A hand-crafted driver would ioremap the region and
implement a sysfs show method that reads the register.

What do you recommend for providing read access to such a register
via sysfs? Is this a job for the userspace I/O (UIO) subsystem?

Thanks,
Martin

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