xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

[PATCH] powerpc: fix dynamic PCI probe regression

Browse Source 
Some hotplug driver functions were migrated to the kernel for use by EEH
in commit 2bf6a8fa21.

Previously, the PCI Hotplug module had been changed to use the new
OFDT-based PCI probe when appropriate:
5fa80fcdca

When rpaphp_pci_config_slot() was moved from the rpaphp driver to the
new kernel function pcibios_add_pci_devices(), the OFDT-based probe
stuff was dropped.  This patch restores it.

Signed-off-by: John Rose <johnrose@austin.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
This commit is contained in:
John Rose
2006-02-24 11:34:23 -06:00
committed by Paul Mackerras
parent a8b76b4915
commit 827c1a6c1a
3 changed files with 38 additions and 19 deletions
Download Patch File Download Diff File Expand all files Collapse all files

14
arch/powerpc/platforms/pseries/eeh.c
View File

@@ -893,6 +893,20 @@ void eeh_add_device_tree_early(struct device_node *dn)
}
EXPORT_SYMBOL_GPL(eeh_add_device_tree_early);
void eeh_add_device_tree_late(struct pci_bus *bus)
{
struct pci_dev *dev;
list_for_each_entry(dev, &bus->devices, bus_list) {
eeh_add_device_late(dev);
if (dev->hdr_type == PCI_HEADER_TYPE_BRIDGE) {
struct pci_bus *subbus = dev->subordinate;
if (subbus)
eeh_add_device_tree_late(subbus);
}
}
}
/**
* eeh_add_device_late - perform EEH initialization for the indicated pci device
* @dev: pci device for which to set up EEH

36
arch/powerpc/platforms/pseries/pci_dlpar.c
View File

@@ -106,6 +106,8 @@ pcibios_fixup_new_pci_devices(struct pci_bus *bus, int fix_bus)
}
}
}
eeh_add_device_tree_late(bus);
}
EXPORT_SYMBOL_GPL(pcibios_fixup_new_pci_devices);
@@ -114,7 +116,6 @@ pcibios_pci_config_bridge(struct pci_dev *dev)
{
u8 sec_busno;
struct pci_bus *child_bus;
struct pci_dev *child_dev;
/* Get busno of downstream bus */
pci_read_config_byte(dev, PCI_SECONDARY_BUS, &sec_busno);
@@ -129,10 +130,6 @@ pcibios_pci_config_bridge(struct pci_dev *dev)
pci_scan_child_bus(child_bus);
list_for_each_entry(child_dev, &child_bus->devices, bus_list) {
eeh_add_device_late(child_dev);
}
/* Fixup new pci devices without touching bus struct */
pcibios_fixup_new_pci_devices(child_bus, 0);
@@ -160,18 +157,25 @@ pcibios_add_pci_devices(struct pci_bus * bus)
eeh_add_device_tree_early(dn);
/* pci_scan_slot should find all children */
slotno = PCI_SLOT(PCI_DN(dn->child)->devfn);
num = pci_scan_slot(bus, PCI_DEVFN(slotno, 0));
if (num) {
pcibios_fixup_new_pci_devices(bus, 1);
pci_bus_add_devices(bus);
}
if (_machine == PLATFORM_PSERIES_LPAR) {
/* use ofdt-based probe */
of_scan_bus(dn, bus);
if (!list_empty(&bus->devices)) {
pcibios_fixup_new_pci_devices(bus, 0);
pci_bus_add_devices(bus);
}
} else {
/* use legacy probe */
slotno = PCI_SLOT(PCI_DN(dn->child)->devfn);
num = pci_scan_slot(bus, PCI_DEVFN(slotno, 0));
if (num) {
pcibios_fixup_new_pci_devices(bus, 1);
pci_bus_add_devices(bus);
}
list_for_each_entry(dev, &bus->devices, bus_list) {
eeh_add_device_late (dev);
if (dev->hdr_type == PCI_HEADER_TYPE_BRIDGE)
pcibios_pci_config_bridge(dev);
list_for_each_entry(dev, &bus->devices, bus_list)
if (dev->hdr_type == PCI_HEADER_TYPE_BRIDGE)
pcibios_pci_config_bridge(dev);
}
}
EXPORT_SYMBOL_GPL(pcibios_add_pci_devices);