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| author | Jiang Liu <jiang.liu@huawei.com> | 2012-06-22 14:55:11 +0800 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2012-06-22 15:16:14 -0600 |
| commit | 846e402300ffa2131239dcf82265b5366cd755f4 (patch) | |
| tree | 75647c417de63d4e5f9f4a712ea2387ff910d3a6 /arch/x86/pci | |
| parent | 2a76c450bd0377f715caf313ded530290d7dc7d7 (diff) | |
| download | linux-846e402300ffa2131239dcf82265b5366cd755f4.tar.bz2 | |
x86/PCI: split out pci_mmconfig_alloc() for code reuse
Split out pci_mmconfig_alloc() for code reuse, which will be used
when supporting PCI root bridge hotplug.
Reviewed-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Jiang Liu <liuj97@gmail.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Diffstat (limited to 'arch/x86/pci')
| -rw-r--r-- | arch/x86/pci/mmconfig-shared.c | 19 |
1 files changed, 15 insertions, 4 deletions
diff --git a/arch/x86/pci/mmconfig-shared.c b/arch/x86/pci/mmconfig-shared.c index f799949a08a5..5e2cd2aa2889 100644 --- a/arch/x86/pci/mmconfig-shared.c +++ b/arch/x86/pci/mmconfig-shared.c @@ -61,8 +61,9 @@ static __init void list_add_sorted(struct pci_mmcfg_region *new) list_add_tail(&new->list, &pci_mmcfg_list); } -static __init struct pci_mmcfg_region *pci_mmconfig_add(int segment, int start, - int end, u64 addr) +static __devinit struct pci_mmcfg_region *pci_mmconfig_alloc(int segment, + int start, + int end, u64 addr) { struct pci_mmcfg_region *new; struct resource *res; @@ -79,8 +80,6 @@ static __init struct pci_mmcfg_region *pci_mmconfig_add(int segment, int start, new->start_bus = start; new->end_bus = end; - list_add_sorted(new); - res = &new->res; res->start = addr + PCI_MMCFG_BUS_OFFSET(start); res->end = addr + PCI_MMCFG_BUS_OFFSET(end + 1) - 1; @@ -96,6 +95,18 @@ static __init struct pci_mmcfg_region *pci_mmconfig_add(int segment, int start, return new; } +static __init struct pci_mmcfg_region *pci_mmconfig_add(int segment, int start, + int end, u64 addr) +{ + struct pci_mmcfg_region *new; + + new = pci_mmconfig_alloc(segment, start, end, addr); + if (new) + list_add_sorted(new); + + return new; +} + struct pci_mmcfg_region *pci_mmconfig_lookup(int segment, int bus) { struct pci_mmcfg_region *cfg; |