ACPI-fan: Another source code review around null pointer handling?

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Hello,

I have looked at the source file for the ACPI fan driver once more.
I would appreciate if a specific implementation detail can be clarified there.

Static source code analysis can point out that functions like the following
share an approach for error detection and corresponding exception handling.
* acpi_fan_get_fif
* acpi_fan_get_fps
* fan_get_state_acpi4
https://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git/tree/drivers/acpi/fan.c?id=80c75a0f1d81922bf322c0634d1e1a15825a89e6#n107

Can it matter eventually to handle a detected null pointer differently from
further checks for an attribute like "obj->type" or "obj->package"?

Regards,
Markus
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