On 2013/1/28 3:23, Yinghai Lu wrote:
> Replace that with hotplug-safe version iteration.
>
> Signed-off-by: Yinghai Lu <yinghai@xxxxxxxxxx>
> Cc: Benjamin Herrenschmidt <benh@xxxxxxxxxxxxxxxxxxx>
> Cc: Paul Mackerras <paulus@xxxxxxxxx>
> Cc: linuxppc-dev@xxxxxxxxxxxxxxxx
> ---
> arch/powerpc/kernel/pci-common.c | 13 ++++++-------
> arch/powerpc/kernel/pci_64.c | 8 ++++----
> 2 files changed, 10 insertions(+), 11 deletions(-)
>
> diff --git a/arch/powerpc/kernel/pci-common.c b/arch/powerpc/kernel/pci-common.c
> index abc0d08..9ccecbe 100644
> --- a/arch/powerpc/kernel/pci-common.c
> +++ b/arch/powerpc/kernel/pci-common.c
> @@ -1398,11 +1398,11 @@ static void __init pcibios_reserve_legacy_regions(struct pci_bus *bus)
>
> void __init pcibios_resource_survey(void)
> {
> - struct pci_bus *b;
> + struct pci_host_bridge *host_bridge = NULL;
>
> /* Allocate and assign resources */
> - list_for_each_entry(b, &pci_root_buses, node)
> - pcibios_allocate_bus_resources(b);
> + for_each_pci_host_bridge(host_bridge)
> + pcibios_allocate_bus_resources(host_bridge->bus);
> pcibios_allocate_resources(0);
> pcibios_allocate_resources(1);
>
> @@ -1410,10 +1410,9 @@ void __init pcibios_resource_survey(void)
> * the low IO area and the VGA memory area if they intersect the
> * bus available resources to avoid allocating things on top of them
> */
> - if (!pci_has_flag(PCI_PROBE_ONLY)) {
> - list_for_each_entry(b, &pci_root_buses, node)
> - pcibios_reserve_legacy_regions(b);
> - }
> + if (!pci_has_flag(PCI_PROBE_ONLY))
> + for_each_pci_host_bridge(host_bridge)
> + pcibios_reserve_legacy_regions(host_bridge->bus);
>
> /* Now, if the platform didn't decide to blindly trust the firmware,
> * we proceed to assigning things that were left unassigned
> diff --git a/arch/powerpc/kernel/pci_64.c b/arch/powerpc/kernel/pci_64.c
> index 2cbe676..f848325 100644
> --- a/arch/powerpc/kernel/pci_64.c
> +++ b/arch/powerpc/kernel/pci_64.c
> @@ -208,9 +208,9 @@ long sys_pciconfig_iobase(long which, unsigned long in_bus,
> unsigned long in_devfn)
> {
> struct pci_controller* hose;
> - struct list_head *ln;
> - struct pci_bus *bus = NULL;
> + struct pci_bus *bus;
> struct device_node *hose_node;
> + struct pci_host_bridge *host_bridge = NULL;
>
> /* Argh ! Please forgive me for that hack, but that's the
> * simplest way to get existing XFree to not lockup on some
> @@ -230,8 +230,8 @@ long sys_pciconfig_iobase(long which, unsigned long in_bus,
> * used on pre-domains setup. We return the first match
> */
>
> - for (ln = pci_root_buses.next; ln != &pci_root_buses; ln = ln->next) {
> - bus = pci_bus_b(ln);
> + for_each_pci_host_bridge(host_bridge) {
> + bus = host_bridge->bus;
> if (in_bus >= bus->number && in_bus <= bus->busn_res.end)
Need put_device(&host_bridge->dev).
> break;
> bus = NULL;
>
--
Thanks!
Yijing
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