linux-kernel - [tip:x86/apic] x86: apic: Check rev 3 fadt correctly for physical

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Message-ID: <tip-61fe91e1319556f32bebfd7ed2c68ef02e2c17f7@git.kernel.org>
Date:	Mon, 11 May 2009 09:53:21 GMT
From:	tip-bot for Yinghai Lu <yinghai@...nel.org>
To:	linux-tip-commits@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, hpa@...or.com, mingo@...hat.com,
	yinghai@...nel.org, tglx@...utronix.de, mingo@...e.hu
Subject: [tip:x86/apic] x86: apic: Check rev 3 fadt correctly for physical_apic bit

Commit-ID:  61fe91e1319556f32bebfd7ed2c68ef02e2c17f7
Gitweb:     http://git.kernel.org/tip/61fe91e1319556f32bebfd7ed2c68ef02e2c17f7
Author:     Yinghai Lu <yinghai@...nel.org>
AuthorDate: Sat, 9 May 2009 23:47:42 -0700
Committer:  Ingo Molnar <mingo@...e.hu>
CommitDate: Mon, 11 May 2009 10:52:40 +0200

x86: apic: Check rev 3 fadt correctly for physical_apic bit

Impact: fix fadt version checking

FADT2_REVISION_ID has value 3 aka rev 3 FADT. So need to use >= instead
of >, as other places in the code do.

[ Impact: extend scope of APIC boot quirk ]

Signed-off-by: Yinghai Lu <yinghai@...nel.org>
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <mingo@...e.hu>


---
 arch/x86/kernel/apic/apic_flat_64.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/arch/x86/kernel/apic/apic_flat_64.c b/arch/x86/kernel/apic/apic_flat_64.c
index 306e5e8..744e6d8 100644
--- a/arch/x86/kernel/apic/apic_flat_64.c
+++ b/arch/x86/kernel/apic/apic_flat_64.c
@@ -235,7 +235,7 @@ static int physflat_acpi_madt_oem_check(char *oem_id, char *oem_table_id)
 	 * regardless of how many processors are present (x86_64 ES7000
 	 * is an example).
 	 */
-	if (acpi_gbl_FADT.header.revision > FADT2_REVISION_ID &&
+	if (acpi_gbl_FADT.header.revision >= FADT2_REVISION_ID &&
 		(acpi_gbl_FADT.flags & ACPI_FADT_APIC_PHYSICAL)) {
 		printk(KERN_DEBUG "system APIC only can use physical flat");
 		return 1;
--
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