From mboxrd@z Thu Jan  1 00:00:00 1970
From: Sinan Kaya <okaya@kernel.org>
Subject: Re: [PATCH v3 2/3] ACPI / OSL: Allow PCI to be disabled
Date: Tue, 11 Dec 2018 18:00:19 -0500
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To: "Rafael J. Wysocki" <rafael@kernel.org>
Cc: Christoph Hellwig <hch@infradead.org>, ACPI Devel Maling List <linux-acpi@vger.kernel.org>, "Rafael J. Wysocki" <rjw@rjwysocki.net>, Len Brown <lenb@kernel.org>, Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
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On 12/11/2018 5:51 PM, Rafael J. Wysocki wrote:
> Well, users running kernels with CONFIG_PCI unset on platforms
> expecting PCI support to be present in the OS may want to know that I
> suppose, so that would be a good reason to return an error, but
> perhaps just once rather than on every access (maybe unless debugging
> is enabled?).

Warning once would be a good trade-off.