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platform/x86: dell-smbios: Resolve dependency error on DCDBAS 

When the DELL_SMBIOS_SMM backend is enabled, the DELL_SMBIOS symbol
depends on DELL_DCDBAS, and we must avoid the situation where
DELL_SMBIOS=y and DCDBAS=m.

Adding the conditional dependency to DELL_SMBIOS such as:

depends !DELL_SMBIOS_SMM || (DCDBAS || DCDBAS=n)

results in the Kconfig tooling complaining about a circular dependency,
although it appears to work in practice.

Avoid the errors by simplifying the dependency and forcing DELL_SMBIOS
to be <= DCDBAS if DCDBAS is enabled (thanks to Greg KH for the
suggestion).

Cc: Mario.Limonciello@dell.com
Signed-off-by: Darren Hart (VMware) <dvhart@infradead.org>
This commit is contained in:
Darren Hart (VMware) 2018-03-06 18:01:04 -08:00
parent 329d58b890
commit 32d7b19bad
1 changed files with 6 additions and 0 deletions
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6
drivers/platform/x86/Kconfig
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@ -105,8 +105,14 @@ config ASUS_LAPTOP
If you have an ACPI-compatible ASUS laptop, say Y or M here.
#
# If the DELL_SMBIOS_SMM feature is enabled, the DELL_SMBIOS driver
# becomes dependent on the DCDBAS driver. The "depends" line prevents a
# configuration where DELL_SMBIOS=y while DCDBAS=m.
#
config DELL_SMBIOS
tristate "Dell SMBIOS driver"
depends on DCDBAS || DCDBAS=n
---help---
This provides support for the Dell SMBIOS calling interface.
If you have a Dell computer you should enable this option.