From: Jiang Liu <jiang.liu@xxxxxxxxxx>
For hot-pluggable host bridges present at boot time, pci_mmconfig_insert() will
insert resources used by MMCFG items for those host bridges. So avoid redundant
call to insert_resource() when pci_mmcfg_insert_resources() is called later.
Reported-By: Taku Izumi <izumi.taku@xxxxxxxxxxxxxx>
Signed-off-by: Jiang Liu <liuj97@xxxxxxxxx>
---
arch/x86/pci/mmconfig-shared.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/arch/x86/pci/mmconfig-shared.c b/arch/x86/pci/mmconfig-shared.c
index f4d9ff9..7bba722 100644
--- a/arch/x86/pci/mmconfig-shared.c
+++ b/arch/x86/pci/mmconfig-shared.c
@@ -371,8 +371,13 @@ static void __init pci_mmcfg_insert_resources(void)
{
struct pci_mmcfg_region *cfg;
+ /*
+ * Insert resources for MMCFG items if the resource hasn't been
+ * inserted by pci_mmconfig_insert() yet.
+ */
list_for_each_entry(cfg, &pci_mmcfg_list, list)
- insert_resource(&iomem_resource, &cfg->res);
+ if (!cfg->res.parent)
+ insert_resource(&iomem_resource, &cfg->res);
/* Mark that the resources have been inserted. */
pci_mmcfg_resources_inserted = 1;
--
1.7.9.5
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