Re: [PATCH 1/2] x86/microcode: vendor abstract outsave_microcode_in_initrd()

[Borislav Petkov]

On Wed, May 22, 2013 at 08:15:33PM -0500, Jacob Shin wrote:
> Currently save_microcode_in_initrd() is declared in vendor neutural
> microcode.h file, but defined in vendor specific
> microcode_intel_early.c file. Vendor abstract it out to
> microcode_core_early.c with a wrapper function.
> 
> Signed-off-by: Jacob Shin <jacob.shin@xxxxxxx>
> ---
>  arch/x86/include/asm/microcode_intel.h  |    2 ++
>  arch/x86/kernel/microcode_core_early.c  |   10 ++++++++++
>  arch/x86/kernel/microcode_intel_early.c |    2 +-
>  3 files changed, 13 insertions(+), 1 deletion(-)
> 
> diff --git a/arch/x86/include/asm/microcode_intel.h b/arch/x86/include/asm/microcode_intel.h
> index 5356f92..cf729eb 100644
> --- a/arch/x86/include/asm/microcode_intel.h
> +++ b/arch/x86/include/asm/microcode_intel.h
> @@ -67,10 +67,12 @@ update_match_revision(struct microcode_header_intel *mc_header, int rev);
>  extern void __init load_ucode_intel_bsp(void);
>  extern void __cpuinit load_ucode_intel_ap(void);
>  extern void show_ucode_info_early(void);
> +extern int __init save_microcode_in_initrd_intel(void);
>  #else
>  static inline __init void load_ucode_intel_bsp(void) {}
>  static inline __cpuinit void load_ucode_intel_ap(void) {}
>  static inline void show_ucode_info_early(void) {}
> +static inline int __init save_microcode_in_initrd_intel(void) {}

In file included from arch/x86/kernel/cpu/common.c:41:0:
/w/kernel/linux-2.6/arch/x86/include/asm/microcode_intel.h: In function âsave_microcode_in_initrd_intelâ:
/w/kernel/linux-2.6/arch/x86/include/asm/microcode_intel.h:75:1: warning: no return statement in function returning non-void [-Wreturn-type]
In file included from arch/x86/kernel/microcode_intel_lib.c:30:0:
/w/kernel/linux-2.6/arch/x86/include/asm/microcode_intel.h: In function âsave_microcode_in_initrd_intelâ:
/w/kernel/linux-2.6/arch/x86/include/asm/microcode_intel.h:75:1: warning: no return statement in function returning non-void [-Wreturn-type]
In file included from arch/x86/kernel/microcode_intel.c:82:0:
/w/kernel/linux-2.6/arch/x86/include/asm/microcode_intel.h: In function âsave_microcode_in_initrd_intelâ:
/w/kernel/linux-2.6/arch/x86/include/asm/microcode_intel.h:75:1: warning: no return statement in function returning non-void [-Wreturn-type]
Setup is 15436 bytes (padded to 15872 bytes).
System is 4268 kB
CRC a330a73f

You need:

diff --git a/arch/x86/include/asm/microcode_intel.h b/arch/x86/include/asm/microcode_intel.h
index cf729eb3beee..87a085333cbf 100644
--- a/arch/x86/include/asm/microcode_intel.h
+++ b/arch/x86/include/asm/microcode_intel.h
@@ -72,7 +72,7 @@ extern int __init save_microcode_in_initrd_intel(void);
 static inline __init void load_ucode_intel_bsp(void) {}
 static inline __cpuinit void load_ucode_intel_ap(void) {}
 static inline void show_ucode_info_early(void) {}
-static inline int __init save_microcode_in_initrd_intel(void) {}
+static inline int __init save_microcode_in_initrd_intel(void) { return -EINVAL; }
 #endif
 
 #if defined(CONFIG_MICROCODE_INTEL_EARLY) && defined(CONFIG_HOTPLUG_CPU)

Btw,

could you pick up this trivial fix and add it to your set - I can't help
myself when I see typos, especially in user-visible printks :)

Thanks.

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