linux-kernel - [PATCH] x86: update mptable fix with no ioapic

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Message-Id: <200806181432.57204.yhlu.kernel@gmail.com>
Date:	Wed, 18 Jun 2008 14:32:56 -0700
From:	Yinghai Lu <yhlu.kernel@...il.com>
To:	Ingo Molnar <mingo@...e.hu>, Thomas Gleixner <tglx@...utronix.de>,
	"H. Peter Anvin" <hpa@...or.com>,
	Andrew Morton <akpm@...ux-foundation.org>
Cc:	Daniel Exner <dex@...gonslave.de>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: [PATCH] x86: update mptable fix with no ioapic


if the system doesn't have ioapic, we don't need to store entries for mptable
update

Reported-by: Daniel Exner <dex@...gonslave.de>
Signed-off-by: Yinghai Lu <yhlu.kernel@...il.com>

diff --git a/arch/x86/kernel/acpi/boot.c b/arch/x86/kernel/acpi/boot.c
index 04dbb35..e639d2f 100644
--- a/arch/x86/kernel/acpi/boot.c
+++ b/arch/x86/kernel/acpi/boot.c
@@ -1173,6 +1173,9 @@ int mp_config_acpi_gsi(unsigned char number, unsigned int devfn, u8 pin,
 	if (!enable_update_mptable)
 		return 0;
 
+	if (!acpi_ioapic)
+		return 0;
+
 	/* print the entry should happen on mptable identically */
 	intsrc.mpc_type = MP_INTSRC;
 	intsrc.mpc_irqtype = mp_INT;
--
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