Hi Bjorn,
Please ignore these three patches, I'm very sorry I still have some confusion about allocating resources
to pci devices.So this patch is not appropriate. I will provide new version patches when I find a better
solution for this problem.
> When we hot plug pci devices, system will allocate resources to these new add
> devices, pci_bus_assign_resources() will be called.If the pci devices was assigned
> resource fail, the resource struct will reset to zero.So I think use res->flags here
> to determine whether the resource is valid is reliable.
>
> Signed-off-by: Yijing Wang <wangyijing@xxxxxxxxxx>
> ---
> drivers/pci/hotplug/acpiphp_glue.c | 4 +---
> 1 files changed, 1 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/pci/hotplug/acpiphp_glue.c b/drivers/pci/hotplug/acpiphp_glue.c
> index 7bbd6bf..2161902 100644
> --- a/drivers/pci/hotplug/acpiphp_glue.c
> +++ b/drivers/pci/hotplug/acpiphp_glue.c
> @@ -1084,13 +1084,11 @@ static void acpiphp_sanitize_bus(struct pci_bus *bus)
> {
> struct pci_dev *dev, *tmp;
> int i;
> - unsigned long type_mask = IORESOURCE_IO | IORESOURCE_MEM;
>
> list_for_each_entry_safe(dev, tmp, &bus->devices, bus_list) {
> for (i=0; i<PCI_BRIDGE_RESOURCES; i++) {
> struct resource *res = &dev->resource[i];
> - if ((res->flags & type_mask) && !res->start &&
> - res->end) {
> + if (!res->flags) {
> /* Could not assign a required resources
> * for this device, remove it */
> pci_stop_and_remove_bus_device(dev);
>
--
Thanks!
Yijing
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