Messages in this thread | | | Date | Tue, 26 Feb 2008 20:40:58 +0100 | From | Sam Ravnborg <> | Subject | Kconfig configuration restore bug [Was: x86: vSMP selection in config] |
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Hi Roman.
We discovered a situation where we could set a choice value in menuconfig but later when we either was running menuconfig or oldconfig the value were changed.
I have created a minimal config that exhibit the error. It was created in a pure mechanical trial-and-error fashion.
First the minimal Kconfig file: # x86 configuration
choice prompt "Subarchitecture Type"
config X86_PC bool "PC-compatible"
config X86_VOYAGER bool "Voyager (NCR)"
config X86_VSMP bool "Support for ScaleMP vSMP" depends on PCI
endchoice
config PCI bool "PCI support" if !X86_VISWS depends on !X86_VOYAGER default y
config USB_ARCH_HAS_HCD bool default PCI
config USB bool "Support for Host-side USB" depends on USB_ARCH_HAS_HCD
config USB_PHIDGET bool "USB Phidgets drivers" depends on USB
config USB_PHIDGETMOTORCONTROL bool "USB PhidgetMotorControl support" depends on USB_PHIDGET
Next the saved .config that is used: # # Automatically generated make config: don't edit # Linux kernel version: KERNELVERSION # Tue Feb 26 20:27:09 2008 # # CONFIG_X86_PC is not set # CONFIG_X86_VOYAGER is not set CONFIG_X86_VSMP=y CONFIG_PCI=y CONFIG_USB_ARCH_HAS_HCD=y CONFIG_USB=y # CONFIG_USB_PHIDGET is not set
When we enter menuconfig or are running oldconfig then we can see that CONFIG_X86_PC is set to 'y' and CONFIG_X86_VSMP is set to 'n'.
If I in menuconfig select VSMP this setting is saved but then oldconfig kicks in and we loose the setting again.
If I delete any of the config variables in the sample above then we no longer change the values and we keep the VSMP equals 'y'.
Can you please take a look at this.
Thanks, Sam
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