From: Roger Pau Monné <roger.pau@citrix.com>
Date: Wed, 31 May 2017 06:39:47 +0000 (+0200)
Subject: x86/mmcfg: set pci_mmcfg_config_num to 0 on error path
X-Git-Tag: archive/raspbian/4.11.1-1+rpi1~1^2~66^2~2116
X-Git-Url: https://dgit.raspbian.org/?a=commitdiff_plain;h=d7594d553b10e74a0cbe15a157baac1aae1d3acd;p=xen.git

x86/mmcfg: set pci_mmcfg_config_num to 0 on error path

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>
---

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;
     }