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From: Ulf Magnusson <ulfalizer@gmail.com>
To: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
	Ley Foon Tan <lftan@altera.com>
Cc: Linux Kbuild mailing list <linux-kbuild@vger.kernel.org>,
	tfiga@chromium.org, paul.burton@mips.com,
	Marek Szyprowski <m.szyprowski@samsung.com>,
	Hans-Christian Noren Egtvedt <egtvedt@samfundet.no>,
	Linus Walleij <linus.walleij@linaro.org>,
	vgupta@synopsys.com, mgorman@techsingularity.net, hch@lst.de,
	mina86@mina86.com, robh@kernel.org, sboyd@codeaurora.org,
	paulus@ozlabs.org, will.deacon@arm.com,
	Tony Lindgren <tony@atomide.com>,
	Nicholas Piggin <npiggin@gmail.com>,
	Masahiro Yamada <yamada.masahiro@socionext.com>,
	Ulf Magnusson <ulfalizer@gmail.com>,
	Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>,
	Bjorn Helgaas <bhelgaas@google.com>,
	linux-pci@vger.kernel.org
Subject: Re: [PATCH 20/20] x86/PCI: VMD: Fix malformed default
Date: Mon, 5 Feb 2018 03:03:29 +0100	[thread overview]
Message-ID: <CAFkk2KRNMKEoArwi9XQryEDe-VMbbL0WySXh_ydLKchke6XQcw@mail.gmail.com> (raw)
In-Reply-To: <20180205012146.23981-21-ulfalizer@gmail.com>

On Mon, Feb 5, 2018 at 2:21 AM, Ulf Magnusson <ulfalizer@gmail.com> wrote:
> 'default N' should be 'default n', though they happen to have the same
> effect here, due to undefined symbols (N in this case) evaluating to n
> in a tristate sense.
>
> Remove the default from VMD instead of changing it. bool and tristate
> symbols implicitly default to n.
>
> Discovered with the
> https://github.com/ulfalizer/Kconfiglib/blob/master/examples/list_undefined.py
> script.
>
> Signed-off-by: Ulf Magnusson <ulfalizer@gmail.com>
> ---
>  drivers/pci/host/Kconfig | 1 -
>  1 file changed, 1 deletion(-)
>
> diff --git a/drivers/pci/host/Kconfig b/drivers/pci/host/Kconfig
> index a4ed7484d127..dc8a2a175f19 100644
> --- a/drivers/pci/host/Kconfig
> +++ b/drivers/pci/host/Kconfig
> @@ -215,7 +215,6 @@ config PCIE_TANGO_SMP8759
>  config VMD
>         depends on PCI_MSI && X86_64 && SRCU
>         tristate "Intel Volume Management Device Driver"
> -       default N
>         ---help---
>           Adds support for the Intel Volume Management Device (VMD). VMD is a
>           secondary PCI host bridge that allows PCI Express root ports,
> --
> 2.14.1
>

The PCIE_ALTERA symbol in this file also depends on the globally
undefined symbol OF_PCI, which was removed in 4670d610d592 ("PCI: Move
OF-related PCI functions into PCI core").

Cheers,
Ulf

  reply	other threads:[~2018-02-05  2:03 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <20180205012146.23981-1-ulfalizer@gmail.com>
2018-02-05  1:21 ` [PATCH 20/20] x86/PCI: VMD: Fix malformed default Ulf Magnusson
2018-02-05  2:03   ` Ulf Magnusson [this message]
2018-02-06 19:11   ` Bjorn Helgaas
2018-02-06 22:17     ` Ulf Magnusson

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