linux-kernel - [RESEND][PATCH]efi: initialize efi.runtime_version to make query_variable_info/update

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Message-ID: <A5ED84D3BB3A384992CBB9C77DEDA4D40FB5C7C3@USINDEM103.corp.hds.com>
Date:	Mon, 6 Aug 2012 18:37:20 +0000
From:	Seiji Aguchi <seiji.aguchi@....com>
To:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-efi@...r.kernel.org" <linux-efi@...r.kernel.org>,
	"x86@...nel.org" <x86@...nel.org>,
	"Thomas Gleixner (tglx@...utronix.de)" <tglx@...utronix.de>,
	"'mingo@...e.hu' (mingo@...e.hu)" <mingo@...e.hu>,
	"H. Peter Anvin (hpa@...ux.intel.com)" <hpa@...ux.intel.com>,
	"matt.fleming@...el.com" <matt.fleming@...el.com>,
	"olof@...om.net" <olof@...om.net>,
	"Paul Gortmaker (paul.gortmaker@...driver.com)" 
	<paul.gortmaker@...driver.com>
CC:	"dle-develop@...ts.sourceforge.net" 
	<dle-develop@...ts.sourceforge.net>,
	Satoru Moriya <satoru.moriya@....com>,
	Matthew Garrett <mjg59@...f.ucam.org>
Subject: [RESEND][PATCH]efi: initialize efi.runtime_version to make
 query_variable_info/update_capsule workable

A value of efi.runtime_version is checked before calling
update_capsule()/query_variable_info() as follows.
But it isn't initialized anywhere.
<snip>
static efi_status_t virt_efi_query_variable_info(u32 attr,
                                                 u64 *storage_space,
                                                  u64 *remaining_space,
                                                 u64 *max_variable_size) {
        if (efi.runtime_version < EFI_2_00_SYSTEM_TABLE_REVISION)
                return EFI_UNSUPPORTED; 
<snip>

This patch initializes a value of efi.runtime_version at boot time.

Acked-by: Matthew Garrett <mjg@...hat.com>
Signed-off-by: Seiji Aguchi <seiji.aguchi@....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 2dc29f5..4c82998 100644
--- a/arch/x86/platform/efi/efi.c
+++ b/arch/x86/platform/efi/efi.c
@@ -868,6 +868,7 @@ void __init efi_enter_virtual_mode(void)
 	 *
 	 * Call EFI services through wrapper functions.
 	 */
+	efi.runtime_version = efi_systab.fw_revision;
 	efi.get_time = virt_efi_get_time;
 	efi.set_time = virt_efi_set_time;
 	efi.get_wakeup_time = virt_efi_get_wakeup_time;
-- 
1.7.1
--
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