Re: [PATCH v4] ACPI: WMI: Add WMI-ACPI mapper driver

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On Tuesday 30 October 2007 14:28:10 Carlos Corbacho wrote:
> There are also other technical problems with this, beyond my own personal
> disagreement - since WMI relies so heavily on ACPI (well, the driver here
> is really just a simple wrapper), then you would have to start exporting
> bits of ACPI to userspace to access WMI. As mentioned in the original
> patches - the mapper knows nothing about "types", this knowledge is known
> only by the caller - WMI just deals in acpi_buffer. My understanding is
> that ACPI would have to export the required functions and data structures
> so that userspace could provide then translate from acpi_buffer to the
> known type (unless there is another way round this to import and export the
> data to/ from userspace?)

To backtrack slightly - I'm wrong on this point; after sleeping on this for 
the night (and/ or application of cluebat), I can modify the functions to let 
userspace call them without exporting half of ACPI in the process.

However, I still believe that HAL is the wrong application to deal with WMI.

-Carlos
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