linux-kernel - Re: [PATCHv3 1/4] efi: Add a stub for efi_enter_virtual

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Date:	Mon, 1 Oct 2012 20:28:32 +0000
From:	Arnd Bergmann <arnd@...db.de>
To:	Josh Triplett <josh@...htriplett.org>
Cc:	linux-kernel@...r.kernel.org, Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>,
	"H. Peter Anvin" <hpa@...or.com>, x86@...nel.org,
	Len Brown <lenb@...nel.org>,
	Matt Fleming <matt.fleming@...el.com>,
	Olof Johansson <olof@...om.net>,
	Matthew Garrett <mjg@...hat.com>,
	David Howells <dhowells@...hat.com>,
	Rusty Russell <rusty@...tcorp.com.au>,
	Jim Cromie <jim.cromie@...il.com>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	linux-acpi@...r.kernel.org
Subject: Re: [PATCHv3 1/4] efi: Add a stub for efi_enter_virtual_mode on non-x86

On Saturday 08 September 2012, Josh Triplett wrote:
> +#ifdef CONFIG_X86
>  extern void efi_enter_virtual_mode (void);     /* switch EFI to virtual mode, if possible */
> +#else
> +static void efi_enter_virtual_mode(void) {}
> +#endif

This has suddenly appeared in linux-next now and is causing warnings.

8<---
efi: fix prototype for API stubs

Some functions in the efi API have recently been added as versions for non-x86,
but are missing an "inline" keyword, which causes these warnings:

include/linux/efi.h:503:13: error: 'efi_enter_virtual_mode' defined but not used [-Werror=unused-function]
include/linux/efi.h:504:13: error: 'efi_late_init' defined but not used [-Werror=unused-function]
include/linux/efi.h:505:13: error: 'efi_free_boot_services' defined but not used [-Werror=unused-function]

Signed-off-by: Arnd Bergmann <arnd@...db.de>

diff --git a/include/linux/efi.h b/include/linux/efi.h
index 798bd1d..58f31c3 100644
--- a/include/linux/efi.h
+++ b/include/linux/efi.h
@@ -500,9 +500,9 @@ extern void efi_enter_virtual_mode (void);	/* switch EFI to virtual mode, if pos
 extern void efi_late_init(void);
 extern void efi_free_boot_services(void);
 #else
-static void efi_enter_virtual_mode(void) {}
-static void efi_late_init(void) {}
-static void efi_free_boot_services(void) {}
+static inline void efi_enter_virtual_mode(void) {}
+static inline void efi_late_init(void) {}
+static inline void efi_free_boot_services(void) {}
 #endif
 extern void __iomem *efi_lookup_mapped_addr(u64 phys_addr);
 extern u64 efi_get_iobase (void);
--
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