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Merge branch 'pci/jiang-acpiphp' into next

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This commit is contained in:
Bjorn Helgaas 2012-09-24 16:36:48 -06:00
commit d3ce52f50c
1 changed files with 31 additions and 10 deletions
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41
drivers/pci/hotplug/acpiphp_glue.c
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@ -115,6 +115,35 @@ static const struct acpi_dock_ops acpiphp_dock_ops = {
.handler = handle_hotplug_event_func, .handler = handle_hotplug_event_func,
}; };
/* Check whether the PCI device is managed by native PCIe hotplug driver */
static bool device_is_managed_by_native_pciehp(struct pci_dev *pdev)
{
u32 reg32;
acpi_handle tmp;
struct acpi_pci_root *root;
/* Check whether the PCIe port supports native PCIe hotplug */
if (pcie_capability_read_dword(pdev, PCI_EXP_SLTCAP, &reg32))
return false;
if (!(reg32 & PCI_EXP_SLTCAP_HPC))
return false;
/*
* Check whether native PCIe hotplug has been enabled for
* this PCIe hierarchy.
*/
tmp = acpi_find_root_bridge_handle(pdev);
if (!tmp)
return false;
root = acpi_pci_find_root(tmp);
if (!root)
return false;
if (!(root->osc_control_set & OSC_PCI_EXPRESS_NATIVE_HP_CONTROL))
return false;
return true;
}
/* callback routine to register each ACPI PCI slot object */ /* callback routine to register each ACPI PCI slot object */
static acpi_status static acpi_status
register_slot(acpi_handle handle, u32 lvl, void *context, void **rv) register_slot(acpi_handle handle, u32 lvl, void *context, void **rv)
@ -142,16 +171,8 @@ register_slot(acpi_handle handle, u32 lvl, void *context, void **rv)
function = adr & 0xffff; function = adr & 0xffff;
pdev = pbus->self; pdev = pbus->self;
if (pdev && pci_is_pcie(pdev)) { if (pdev && device_is_managed_by_native_pciehp(pdev))
tmp = acpi_find_root_bridge_handle(pdev); return AE_OK;
if (tmp) {
struct acpi_pci_root *root = acpi_pci_find_root(tmp);
if (root && (root->osc_control_set &
OSC_PCI_EXPRESS_NATIVE_HP_CONTROL))
return AE_OK;
}
}
newfunc = kzalloc(sizeof(struct acpiphp_func), GFP_KERNEL); newfunc = kzalloc(sizeof(struct acpiphp_func), GFP_KERNEL);
if (!newfunc) if (!newfunc)