[PATCH] nvme-auth: use IS_REACHABLE for nvme_auth_extract_key() declaration

[Chaitanya Kulkarni]

On 11/3/25 6:54 AM, Keith Busch wrote:
> On Mon, Nov 03, 2025 at 12:46:21PM +0100, Christoph Hellwig wrote:
>> So with Keith' latest fixes the auth code should always be built
>> in if either the host or target code is built in.  Did this not
>> work, or is this for an older branch?
> It should be fine if either or both are built in. The problem is if both
> are modules. For that config, this should have used:
>
> #ifdef CONFIG_NVME_AUTH_STATE
>
> Or IS_REACHABLE also works.
>

unless there is a specific need to replace IS_REACHABLE() by
CONFIG_NVME_AUTH_STATE, can I please get Reviewed-by on this patch ?

-ck