linux-kernel - Re: [PATCH 2/6] x86/efi: use efi_memory

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Date:	Fri, 19 Sep 2014 12:04:12 +0100
From:	Matt Fleming <matt@...sole-pimps.org>
To:	Ricardo Neri <ricardo.neri-calderon@...ux.intel.com>
Cc:	Matt Fleming <matt.fleming@...el.com>,
	"H. Peter Anvin" <hpa@...ux.intel.com>, linux-efi@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	"Glenn P. Williamson" <glenn.p.williamson@...el.com>
Subject: Re: [PATCH 2/6] x86/efi: use efi_memory_descriptor in convenience
 functions

On Sat, 13 Sep, at 11:36:12AM, Ricardo Neri wrote:
> diff --git a/drivers/firmware/efi/efi.c b/drivers/firmware/efi/efi.c
> index 64ecbb5..29c85fe 100644
> --- a/drivers/firmware/efi/efi.c
> +++ b/drivers/firmware/efi/efi.c
> @@ -206,29 +206,23 @@ subsys_initcall(efisubsys_init);
>   */
>  void __iomem *efi_lookup_mapped_addr(u64 phys_addr)
>  {
> -	struct efi_memory_map *map;
> -	void *p;
> -	map = efi.memmap;
> -	if (!map)
> +	efi_memory_desc_t *md;
> +
> +	md = efi_memory_descriptor(phys_addr);

Whoops. This change is causing the following build errors on ia64,

/home/build/git/efi/arch/ia64/kernel/efi.c:722:1: error: static declaration of ‘efi_memory_descriptor’ follows non-static declaration
 efi_memory_descriptor (unsigned long phys_addr)
 ^
In file included from /home/build/git/efi/arch/ia64/kernel/efi.c:32:0:
/home/build/git/efi/include/linux/efi.h:870:27: note: previous declaration of ‘efi_memory_descriptor’ was here
 extern efi_memory_desc_t *efi_memory_descriptor(unsigned long phys_addr);
                           ^

and on arm64...

drivers/built-in.o: In function `efi_lookup_mapped_addr':
:(.text+0xb0e0): undefined reference to `efi_memory_descriptor'

-- 
Matt Fleming, Intel Open Source Technology Center
--
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