x86/PCI: MMCONFIG: step through MCFG table, not pci_mmcfg_config[]

Step through the ACPI MCFG table, not pci_mmcfg_config[].  No functional
change, but simplifies future patches that encapsulate pci_mmcfg_config[].

Reviewed-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>

1 files changed, 4 insertions, 1 deletions

diff --git a/arch/x86/pci/mmconfig-shared.c b/arch/x86/pci/mmconfig-shared.c
index fbadb89c71eb..7a7b6ba3abbb 100644
--- a/arch/x86/pci/mmconfig-shared.c
+++ b/arch/x86/pci/mmconfig-shared.c
@@ -554,6 +554,7 @@ static int __init acpi_mcfg_check_entry(struct acpi_table_mcfg *mcfg,
 static int __init pci_parse_mcfg(struct acpi_table_header *header)
 {
         struct acpi_table_mcfg *mcfg;
+        struct acpi_mcfg_allocation *cfg_table, *cfg;
         unsigned long i;
         int entries, config_size;
 
@@ -586,8 +587,10 @@ static int __init pci_parse_mcfg(struct acpi_table_header *header)
         memcpy(pci_mmcfg_config, &mcfg[1], config_size);
         pci_mmcfg_config_num = entries;
 
+        cfg_table = (struct acpi_mcfg_allocation *) &mcfg[1];
         for (i = 0; i < entries; i++) {
-                if (acpi_mcfg_check_entry(mcfg, &pci_mmcfg_config[i])) {
+                cfg = &cfg_table[i];
+                if (acpi_mcfg_check_entry(mcfg, cfg)) {
                         kfree(pci_mmcfg_config);
                         pci_mmcfg_config_num = 0;
                         return -ENODEV;