Sender: Guenter Roeck <groeck7@gmail.com>
To:     Niklas Schnelle <schnelle@linux.ibm.com>,
        Arnd Bergmann <arnd@kernel.org>,
        Bjorn Helgaas <bhelgaas@google.com>,
        John Garry <john.garry@huawei.com>,
        Nick Hu <nickhu@andestech.com>,
        Greentime Hu <green.hu@gmail.com>,
        Vincent Chen <deanbo422@gmail.com>,
        Paul Walmsley <paul.walmsley@sifive.com>,
        Palmer Dabbelt <palmer@dabbelt.com>,
        Albert Ou <aou@eecs.berkeley.edu>, Guo Ren <guoren@kernel.org>,
        Damien Le Moal <damien.lemoal@opensource.wdc.com>,
        Ian Abbott <abbotti@mev.co.uk>,
        H Hartley Sweeten <hsweeten@visionengravers.com>,
        Linus Walleij <linus.walleij@linaro.org>,
        Bartosz Golaszewski <brgl@bgdev.pl>,
        Jean Delvare <jdelvare@suse.com>,
        Dmitry Torokhov <dmitry.torokhov@gmail.com>,
        Karsten Keil <isdn@linux-pingi.de>,
        Hans Verkuil <hverkuil-cisco@xs4all.nl>,
        Mauro Carvalho Chehab <mchehab@kernel.org>,
        Sathya Prakash <sathya.prakash@broadcom.com>,
        Sreekanth Reddy <sreekanth.reddy@broadcom.com>,
        Suganath Prabu Subramani 
        <suganath-prabu.subramani@broadcom.com>,
        Michael Grzeschik <m.grzeschik@pengutronix.de>,
        "David S. Miller" <davem@davemloft.net>,
        Jakub Kicinski <kuba@kernel.org>,
        Jesse Brandeburg <jesse.brandeburg@intel.com>,
        Tony Nguyen <anthony.l.nguyen@intel.com>,
        Kalle Valo <kvalo@kernel.org>, Jouni Malinen <j@w1.fi>,
        "James E.J. Bottomley" <jejb@linux.ibm.com>,
        "Martin K. Petersen" <martin.petersen@oracle.com>,
        Hannes Reinecke <hare@suse.com>,
        Kashyap Desai <kashyap.desai@broadcom.com>,
        Sumit Saxena <sumit.saxena@broadcom.com>,
        Shivasharan S <shivasharan.srikanteshwara@broadcom.com>,
        Nilesh Javali <njavali@marvell.com>,
        GR-QLogic-Storage-Upstream@marvell.com,
        Mark Brown <broonie@kernel.org>,
        Sudip Mukherjee <sudipm.mukherjee@gmail.com>,
        Teddy Wang <teddy.wang@siliconmotion.com>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        Forest Bond <forest@alittletooquiet.net>,
        Jiri Slaby <jirislaby@kernel.org>,
        Wim Van Sebroeck <wim@linux-watchdog.org>,
        Jaroslav Kysela <perex@perex.cz>, Takashi Iwai <tiwai@suse.com>
Cc:     linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org,
        linux-pci@vger.kernel.org, linux-riscv@lists.infradead.org,
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        linux-serial@vger.kernel.org, dri-devel@lists.freedesktop.org,
        linux-watchdog@vger.kernel.org, alsa-devel@alsa-project.org
References: <20211227164317.4146918-1-schnelle@linux.ibm.com>
 <20211227164317.4146918-2-schnelle@linux.ibm.com>
From:   Guenter Roeck <linux@roeck-us.net>
Subject: Re: [RFC 01/32] Kconfig: introduce and depend on LEGACY_PCI
Message-ID: <281298ec-3898-9b02-1d92-66bf6df41170@roeck-us.net>
Date:   Mon, 27 Dec 2021 09:48:50 -0800
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On 12/27/21 8:42 AM, Niklas Schnelle wrote:
> Introduce a new LEGACY_PCI Kconfig option which gates support for legacy
> PCI devices including those attached to a PCI-to-PCI Express bridge and
> PCI Express devices using legacy I/O spaces. Note that this is different
> from non PCI uses of I/O ports such as by ACPI.
> 
> Add dependencies on LEGACY_PCI for all PCI drivers which only target
> legacy PCI devices and ifdef legacy PCI specific functions in ata
> handling.
> 

This effectively disables all default configurations which now depend
on CONFIG_LEGACY_PCI. Yet, I don't see CONFIG_LEGACY_PCI added to
configuration files which explicitly enable any of the affected
configurations. Is that on purpose ? If so, I think it should at least
be mentioned in the commit description. However, I think it would be
more appropriate to either delete all affected configuration flags from
the affected configuration files, or to add CONFIG_LEGACY_PCI=y to those
files.

Guenter