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x86/PCI: simplify pci_mmcfg_late_insert_resources() 

Reduce redundant code to simplify pci_mmcfg_late_insert_resources().

Reviewed-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Jiang Liu <liuj97@gmail.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
This commit is contained in:
Jiang Liu 2012-06-22 14:55:18 +08:00 committed by Bjorn Helgaas
parent c0fa40784c
commit 66e8850a2a
1 changed files with 8 additions and 26 deletions
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34
arch/x86/pci/mmconfig-shared.c
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@ -26,7 +26,6 @@
#define PREFIX "PCI: "
/* Indicate if the mmcfg resources have been placed into the resource table. */
static int __initdata pci_mmcfg_resources_inserted;
static bool pci_mmcfg_running_state;
static bool pci_mmcfg_arch_init_failed;
static DEFINE_MUTEX(pci_mmcfg_lock);
@ -373,18 +372,6 @@ static int __init pci_mmcfg_check_hostbridge(void)
return !list_empty(&pci_mmcfg_list);
}
static void __init pci_mmcfg_insert_resources(void)
{
struct pci_mmcfg_region *cfg;
list_for_each_entry(cfg, &pci_mmcfg_list, list)
if (!cfg->res.parent)
insert_resource(&iomem_resource, &cfg->res);
/* Mark that the resources have been inserted. */
pci_mmcfg_resources_inserted = 1;
}
static acpi_status __devinit check_mcfg_resource(struct acpi_resource *res,
void *data)
{
@ -668,11 +655,7 @@ static void __init __pci_mmcfg_init(int early)
if (pci_mmcfg_arch_init())
pci_probe = (pci_probe & ~PCI_PROBE_MASK) | PCI_PROBE_MMCONF;
else {
/*
* Signal not to attempt to insert mmcfg resources because
* the architecture mmcfg setup could not initialize.
*/
pci_mmcfg_resources_inserted = 1;
free_all_mmcfg();
pci_mmcfg_arch_init_failed = true;
}
}
@ -689,15 +672,12 @@ void __init pci_mmcfg_late_init(void)
static int __init pci_mmcfg_late_insert_resources(void)
{
struct pci_mmcfg_region *cfg;
pci_mmcfg_running_state = true;
/*
* If resources are already inserted or we are not using MMCONFIG,
* don't insert the resources.
*/
if ((pci_mmcfg_resources_inserted == 1) ||
(pci_probe & PCI_PROBE_MMCONF) == 0 ||
list_empty(&pci_mmcfg_list))
/* If we are not using MMCONFIG, don't insert the resources. */
if ((pci_probe & PCI_PROBE_MMCONF) == 0)
return 1;
/*
@ -705,7 +685,9 @@ static int __init pci_mmcfg_late_insert_resources(void)
* marked so it won't cause request errors when __request_region is
* called.
*/
pci_mmcfg_insert_resources();
list_for_each_entry(cfg, &pci_mmcfg_list, list)
if (!cfg->res.parent)
insert_resource(&iomem_resource, &cfg->res);
return 0;
}