linux-kernel - [tip:x86/urgent] x86/numachip: Fix NumaConnect2 MMCFG PCI access

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Date:	Wed, 30 Dec 2015 10:21:40 -0800
From:	tip-bot for Daniel J Blueman <tipbot@...or.com>
To:	linux-tip-commits@...r.kernel.org
Cc:	sp@...ascale.com, linux-kernel@...r.kernel.org, mingo@...nel.org,
	daniel.lezcano@...aro.org, daniel@...ascale.com, hpa@...or.com,
	tglx@...utronix.de, torvalds@...ux-foundation.org
Subject: [tip:x86/urgent] x86/numachip: Fix NumaConnect2 MMCFG PCI access

Commit-ID:  dd7a5ab495019d424c2b0747892eb2e38a052ba5
Gitweb:     http://git.kernel.org/tip/dd7a5ab495019d424c2b0747892eb2e38a052ba5
Author:     Daniel J Blueman <daniel@...ascale.com>
AuthorDate: Thu, 31 Dec 2015 02:06:47 +0800
Committer:  Thomas Gleixner <tglx@...utronix.de>
CommitDate: Wed, 30 Dec 2015 19:19:03 +0100

x86/numachip: Fix NumaConnect2 MMCFG PCI access

The MMCFG PCI accessors weren't being setup for NumacConnect2
correctly due to over-early assignment; this would create the
potential for the wrong PCI domain to be accessed.

Fix this by using the correct arch-specific PCI init function.

Signed-off-by: Daniel J Blueman <daniel@...ascale.com>
Acked-by: Steffen Persvold <sp@...ascale.com>
Cc: Daniel Lezcano <daniel.lezcano@...aro.org>
Cc: Linus Torvalds <torvalds@...ux-foundation.org>
Link: http://lkml.kernel.org/r/1451498807-15920-1-git-send-email-daniel@numascale.com
Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
---
 arch/x86/kernel/apic/apic_numachip.c | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/arch/x86/kernel/apic/apic_numachip.c b/arch/x86/kernel/apic/apic_numachip.c
index 38dd5ef..2bd2292 100644
--- a/arch/x86/kernel/apic/apic_numachip.c
+++ b/arch/x86/kernel/apic/apic_numachip.c
@@ -193,20 +193,17 @@ static int __init numachip_system_init(void)
 	case 1:
 		init_extra_mapping_uc(NUMACHIP_LCSR_BASE, NUMACHIP_LCSR_SIZE);
 		numachip_apic_icr_write = numachip1_apic_icr_write;
-		x86_init.pci.arch_init = pci_numachip_init;
 		break;
 	case 2:
 		init_extra_mapping_uc(NUMACHIP2_LCSR_BASE, NUMACHIP2_LCSR_SIZE);
 		numachip_apic_icr_write = numachip2_apic_icr_write;
-
-		/* Use MCFG config cycles rather than locked CF8 cycles */
-		raw_pci_ops = &pci_mmcfg;
 		break;
 	default:
 		return 0;
 	}
 
 	x86_cpuinit.fixup_cpu_id = fixup_cpu_id;
+	x86_init.pci.arch_init = pci_numachip_init;
 
 	return 0;
 }
--
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