x86/efi: Don't select EFI from certain special ACPI drivers

Commit 7ea6c6c1 ("Move cper.c from drivers/acpi/apei to
drivers/firmware/efi") results in CONFIG_EFI being enabled even
when the user doesn't want this. Since ACPI APEI used to build
fine without UEFI (and as far as I know also has no functional
depency on it), at least in that case using a reverse dependency
is wrong (and a straight one isn't needed).

Whether the same is true for ACPI_EXTLOG I don't know - if there
is a functional dependency, it should depend on EFI rather than
selecting it. It certainly has (currently) no build dependency.

Adjust Kconfig and build logic so that the bad dependency gets
avoided.

Signed-off-by: Jan Beulich <jbeulich@suse.com>
Acked-by: Tony Luck <tony.luck@intel.com>
Cc: Matt Fleming <matt.fleming@intel.com>
Link: http://lkml.kernel.org/r/52AF1EBC020000780010DBF9@nat28.tlf.novell.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>

diff --git a/drivers/acpi/Kconfig b/drivers/acpi/Kconfig
index 5d92485..4770de5 100644 (file)
--- a/drivers/acpi/Kconfig
+++ b/drivers/acpi/Kconfig
@@ -348,7 +348,6 @@ source "drivers/acpi/apei/Kconfig"
 config ACPI_EXTLOG
        tristate "Extended Error Log support"
        depends on X86_MCE && X86_LOCAL_APIC
-       select EFI
        select UEFI_CPER
        default n
        help

diff --git a/drivers/acpi/apei/Kconfig b/drivers/acpi/apei/Kconfig
index 786294b..3650b21 100644 (file)
--- a/drivers/acpi/apei/Kconfig
+++ b/drivers/acpi/apei/Kconfig
@@ -2,7 +2,6 @@ config ACPI_APEI
        bool "ACPI Platform Error Interface (APEI)"
        select MISC_FILESYSTEMS
        select PSTORE
-       select EFI
        select UEFI_CPER
        depends on X86
        help

diff --git a/drivers/firmware/Makefile b/drivers/firmware/Makefile
index 299fad6..5373dc5 100644 (file)
--- a/drivers/firmware/Makefile
+++ b/drivers/firmware/Makefile
@@ -14,3 +14,4 @@ obj-$(CONFIG_FIRMWARE_MEMMAP) += memmap.o
 
 obj-$(CONFIG_GOOGLE_FIRMWARE)  += google/
 obj-$(CONFIG_EFI)              += efi/
+obj-$(CONFIG_UEFI_CPER)                += efi/

diff --git a/drivers/firmware/efi/Kconfig b/drivers/firmware/efi/Kconfig
index 3150aa4..6aecbc8 100644 (file)
--- a/drivers/firmware/efi/Kconfig
+++ b/drivers/firmware/efi/Kconfig
@@ -36,7 +36,7 @@ config EFI_VARS_PSTORE_DEFAULT_DISABLE
          backend for pstore by default. This setting can be overridden
          using the efivars module's pstore_disable parameter.
 
-config UEFI_CPER
-       def_bool n
-
 endmenu
+
+config UEFI_CPER
+       bool

diff --git a/drivers/firmware/efi/Makefile b/drivers/firmware/efi/Makefile
index 9ba156d..6c2a41e 100644 (file)
--- a/drivers/firmware/efi/Makefile
+++ b/drivers/firmware/efi/Makefile
@@ -1,7 +1,7 @@
 #
 # Makefile for linux kernel
 #
-obj-y                                  += efi.o vars.o
+obj-$(CONFIG_EFI)                      += efi.o vars.o
 obj-$(CONFIG_EFI_VARS)                 += efivars.o
 obj-$(CONFIG_EFI_VARS_PSTORE)          += efi-pstore.o
 obj-$(CONFIG_UEFI_CPER)                        += cper.o