linux-kernel - Re: [PATCH] platform/x86: Kconfig: Fix dell-laptop dependency chain.

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Date:   Fri, 20 Apr 2018 14:52:12 -0700
From:   Darren Hart <dvhart@...radead.org>
To:     Mario Limonciello <mario.limonciello@...l.com>
Cc:     Andy Shevchenko <andy.shevchenko@...il.com>,
        LKML <linux-kernel@...r.kernel.org>,
        platform-driver-x86@...r.kernel.org
Subject: Re: [PATCH] platform/x86: Kconfig: Fix dell-laptop dependency chain.

On Fri, Apr 20, 2018 at 12:42:11PM -0500, Mario Limonciello wrote:
> As reported by Randy Dunlap:
> >> WARNING: unmet direct dependencies detected for DELL_SMBIOS
> >>   Depends on [m]: X86 [=y] && X86_PLATFORM_DEVICES [=y]
> >>	&& (DCDBAS [=m] ||
> >> DCDBAS [=m]=n) && (ACPI_WMI [=n] || ACPI_WMI [=n]=n)
> >>   Selected by [y]:
> >>   - DELL_LAPTOP [=y] && X86 [=y] && X86_PLATFORM_DEVICES [=y]
> >> && DMI [=y]
> >> && BACKLIGHT_CLASS_DEVICE [=y] && (ACPI_VIDEO [=n] ||
> >>	ACPI_VIDEO [=n]=n)
> >> && (RFKILL [=n] || RFKILL [=n]=n) && SERIO_I8042 [=y]
> >>
> 
> Right now it's possible to set dell laptop to compile in but this
> causes dell-smbios to compile in which breaks if dcdbas is a module.
> 
> Dell laptop shouldn't select dell-smbios anymore, but depend on it.

Ugh. Indeed.

One of the goals of the previous maelstrom of dell* kconfig depencency
changes was to make it so DELL_LAPTOP was visible without having to
toggle DELL_SMBIOS*.  But, having "select DELL_SMBIOS" avoids the
dependency check causing this failure (I'm surprised and dismayed this
made it through all the config permutation testing this saw).

I'll apply this patch, and I guess it should go to stable, and for the
next version I think it's time for a new "CONFIG DELL_EXTRAS" which will
allow us to default DELL_SMBIOS to y and make the menu more consistent.

Thank you for the catch. Grrrrrr :-(

-- 
Darren Hart
VMware Open Source Technology Center