linux-kernel - Re: [PATCH 1/5] EFI: Provide registration for efi

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Message-ID: <20120209160128.GA32058@phenom.dumpdata.com>
Date:	Thu, 9 Feb 2012 11:01:28 -0500
From:	Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>
To:	Tang Liang <liang.tang@...cle.com>
Cc:	mjg59@...f.ucam.org, xen-devel@...ts.xensource.com,
	linux-kernel@...r.kernel.org, linux-acpi@...r.kernel.org
Subject: Re: [PATCH 1/5] EFI: Provide registration for efi_init.. etc efi
 public  function

On Thu, Feb 09, 2012 at 11:32:08AM +0800, Tang Liang wrote:
> The efi public functions are changed to function pointer in efi_init_funcs
> struct.
> They act as efi generic functions as default.
> As a benefit from this change, we can register xen efi init func.
> 
> Signed-off-by: Tang Liang <liang.tang@...cle.com>
> ---
>  arch/x86/platform/efi/efi.c |   65 +++++++++++++++++++++++++++++++++++++++---
>  include/linux/efi.h         |   12 +++++++-
>  2 files changed, 71 insertions(+), 6 deletions(-)
> 
> diff --git a/arch/x86/platform/efi/efi.c b/arch/x86/platform/efi/efi.c
> index 4cf9bd0..d567e29 100644
> --- a/arch/x86/platform/efi/efi.c
> +++ b/arch/x86/platform/efi/efi.c
> @@ -50,6 +50,23 @@
>  #define PFX 		"EFI: "
>  
>  int efi_enabled;
> +
> +static void efi_init_generic(void);
> +
> +static void efi_enter_virtual_mode_generic(void);
> +static u32 efi_mem_type_generic(unsigned long phys_addr);
> +static u64 efi_mem_attributes_generic(unsigned long phys_addr);
> +
> +struct efi_init_funcs efi_generic_funcs = {
> +	.__efi_init		     = efi_init_generic,
> +	.__efi_reserve_boot_services = efi_reserve_boot_services_generic,

Hmm, did you compile test this? I get:

/home/konrad/ssd/linux/arch/x86/platform/efi/efi.c:62: error: ‘efi_reserve_boot_services_generic’ undeclared here (not in a function)

The patch below fixes it:


>From 6ecdc001b99f06f73fe55ea24663c9a3921c285e Mon Sep 17 00:00:00 2001
From: Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>
Date: Thu, 9 Feb 2012 10:59:17 -0500
Subject: [PATCH] efi: Fix compiler error introduced by moving of the code
 decleration.
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

The compiler error is :

arch/x86/platform/efi/efi.c:62: error: ‘efi_reserve_boot_services_generic’ undeclared here (not in a function

And declearing it before the use fixes the issue.

Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>
---
 arch/x86/platform/efi/efi.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/arch/x86/platform/efi/efi.c b/arch/x86/platform/efi/efi.c
index d7b19ee..c21b325 100644
--- a/arch/x86/platform/efi/efi.c
+++ b/arch/x86/platform/efi/efi.c
@@ -56,6 +56,7 @@ static void efi_init_generic(void);
 static void efi_enter_virtual_mode_generic(void);
 static u32 efi_mem_type_generic(unsigned long phys_addr);
 static u64 efi_mem_attributes_generic(unsigned long phys_addr);
+static void efi_reserve_boot_services_generic(void);
 
 struct efi_init_funcs efi_generic_funcs = {
 	.__efi_init		     = efi_init_generic,
-- 
1.7.7.5

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