linux-kernel - Re: [PATCH] x86, efi: Fix a build warning

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Date:	Wed, 24 Apr 2013 12:56:10 +0200
From:	Ingo Molnar <mingo@...nel.org>
To:	Borislav Petkov <bp@...en8.de>
Cc:	X86 ML <x86@...nel.org>, LKML <linux-kernel@...r.kernel.org>,
	Borislav Petkov <bp@...e.de>,
	Matthew Garrett <matthew.garrett@...ula.com>,
	Matt Fleming <matt.fleming@...el.com>
Subject: Re: [PATCH] x86, efi: Fix a build warning


* Borislav Petkov <bp@...en8.de> wrote:

> From: Borislav Petkov <bp@...e.de>
> 
> Fix this:
> 
> arch/x86/boot/compressed/eboot.c: In function ???setup_efi_vars???:
> arch/x86/boot/compressed/eboot.c:269:2: warning: passing argument 1 of ???efi_call_phys??? makes pointer from integer without a cast [enabled by default]
> In file included from arch/x86/boot/compressed/eboot.c:12:0:
> /w/kernel/linux/arch/x86/include/asm/efi.h:8:33: note: expected ???void *??? but argument is of type ???long unsigned int???
> 
> after cc5a080c5d40 ("efi: Pass boot services variable info to runtime
> code").
> 
> Cc: Matthew Garrett <matthew.garrett@...ula.com>
> Cc: Matt Fleming <matt.fleming@...el.com>
> Signed-off-by: Borislav Petkov <bp@...e.de>
> ---
>  arch/x86/boot/compressed/eboot.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/arch/x86/boot/compressed/eboot.c b/arch/x86/boot/compressed/eboot.c
> index 8615f7581820..41de115a55b7 100644
> --- a/arch/x86/boot/compressed/eboot.c
> +++ b/arch/x86/boot/compressed/eboot.c
> @@ -266,7 +266,7 @@ static efi_status_t setup_efi_vars(struct boot_params *params)
>  	while (data && data->next)
>  		data = (struct setup_data *)(unsigned long)data->next;
>  
> -	status = efi_call_phys4(sys_table->runtime->query_variable_info,
> +	status = efi_call_phys4((void *)sys_table->runtime->query_variable_info,
>  				EFI_VARIABLE_NON_VOLATILE |
>  				EFI_VARIABLE_BOOTSERVICE_ACCESS |
>  				EFI_VARIABLE_RUNTIME_ACCESS, &store_size,

Why isn't the query_variale_info field changed to void * instead? That way 
no cast would be needed.

Thanks,

	Ingo
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