RE: [PATCH v6] Introduce support for Systems Management Driver over WMI for Dell Systems

From: Limonciello, Mario
Date: Mon Oct 26 2020 - 11:40:02 EST


> This was present in previous versions too, but I just noticed this are you
> sure that using
> .string.pointer is correct here? That seems wrong since the pointer gets
> allocated by
> the Linux ACPI core, so it is not under influence of the AML code?
>
> I think you want / need to use ".integer.value" here ?
>
> And maybe first do a type check, e.g.:
>
> if (obj->package.elements[CURRENT_VAL].type != ACPI_TYPE_INTEGER) {
> ret = -EINVAL;
> goto out;
> }
>
> Adding this type check will also show if I'm right that you should use
> .integer.value ...
>
> ret = snprintf(buf, PAGE_SIZE, "%lld\n", obj-

We'll need to double check this, but I'm pretty sure the firmware outputs
everything as a string.