linux-kernel - Re: [PATCH V5 1/9] drivers core: Add support for Wifi band RF mitigations

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Message-ID: <18dfe989-2610-4234-ade2-ffbc2f233c19@lunn.ch>
Date:   Tue, 4 Jul 2023 15:07:15 +0200
From:   Andrew Lunn <andrew@...n.ch>
To:     "Quan, Evan" <Evan.Quan@....com>
Cc:     "rafael@...nel.org" <rafael@...nel.org>,
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Subject: Re: [PATCH V5 1/9] drivers core: Add support for Wifi band RF
 mitigations

> > What is the purpose of this stage? Why would it not be supported for this
> > device?
> This is needed for wbrf support via ACPI mechanism. If BIOS(AML code) does not support the wbrf adding/removing for some device,
> it should speak that out so that the device can be aware of that.

How much overhead is this adding? How deep do you need to go to find
the BIOS does not support it? And how often is this called?

Where do we want to add complexity? In the generic API? Or maybe a
little deeper in the ACPI specific code?

       Andrew