From d7594d553b10e74a0cbe15a157baac1aae1d3acd Mon Sep 17 00:00:00 2001
From: =?utf8?q?Roger=20Pau=20Monn=C3=A9?= <roger.pau@citrix.com>
Date: Wed, 31 May 2017 08:39:47 +0200
Subject: [PATCH] x86/mmcfg: set pci_mmcfg_config_num to 0 on error path
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One error path of acpi_parse_mcfg doesn't set pci_mmcfg_config_num to zero, fix
this.

Signed-off-by: Roger Pau Monné <roger.pau@citrix.com>
Reviewed-by: Jan Beulich <jbeulich@suse.com>
---
 xen/arch/x86/x86_64/acpi_mmcfg.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/xen/arch/x86/x86_64/acpi_mmcfg.c b/xen/arch/x86/x86_64/acpi_mmcfg.c
index a96d5e00de..650140eec5 100644
--- a/xen/arch/x86/x86_64/acpi_mmcfg.c
+++ b/xen/arch/x86/x86_64/acpi_mmcfg.c
@@ -96,6 +96,7 @@ int __init acpi_parse_mcfg(struct acpi_table_header *header)
     if (!pci_mmcfg_config) {
         printk(KERN_WARNING PREFIX
                "No memory for MCFG config tables\n");
+        pci_mmcfg_config_num = 0;
         return -ENOMEM;
     }
 
-- 
2.39.5