kernel/drivers/pci/hotplug/rpadlpar_core.c, branch linux-4.3.y

powerpc/eeh: Do probe on pci_dn

2015-03-24T02:15:52Z

Originally, EEH core probes on device_node or pci_dev to populate EEH devices and PEs, which conflicts with the fact: SRIOV VFs are usually enabled and created by PF's driver and they don't have the corresponding device_nodes. Instead, SRIOV VFs have dynamically created pci_dn, which can be used for EEH probe. The patch reworks EEH probe for PowerNV and pSeries platforms to do probing based on pci_dn, instead of pci_dev or device_node any more. Signed-off-by: Gavin Shan Signed-off-by: Benjamin Herrenschmidt

PCI: rpaphp: Use pci_is_bridge() to simplify code

2014-05-27T20:57:55Z

Use pci_is_bridge() to simplify code. No functional change. Requires: 326c1cdae741 PCI: Rename pci_is_bridge() to pci_has_subordinate() Requires: 1c86438c9423 PCI: Add new pci_is_bridge() interface Signed-off-by: Yijing Wang Signed-off-by: Bjorn Helgaas Acked-by: Benjamin Herrenschmidt

PCI: hotplug: Use global PCI rescan-remove locking

2014-01-14T19:14:25Z

Multiple race conditions are possible between PCI hotplug and the generic PCI bus rescan and device removal that can be triggered via sysfs. To avoid those race conditions make PCI hotplug use global PCI rescan-remove locking. Signed-off-by: Rafael J. Wysocki Signed-off-by: Bjorn Helgaas

PCI: Fix whitespace, capitalization, and spelling errors

2013-11-14T18:28:18Z

Fix whitespace, capitalization, and spelling errors. No functional change. I know "busses" is not an error, but "buses" was more common, so I used it consistently. Signed-off-by: Marta Rybczynska (pci_reset_bridge_secondary_bus()) Signed-off-by: Bjorn Helgaas Acked-by: Rafael J. Wysocki

powerpc/pci/hotplug: Don't need to remove from EEH cache twice

2013-07-24T04:18:47Z

Since pcibios_release_device() called by pci_stop_and_remove_bus_device() has removed the device from the EEH cache, we needn't do that again. Cc: Bjorn Helgaas Acked-by: Bjorn Helgaas Signed-off-by: Gavin Shan Signed-off-by: Benjamin Herrenschmidt

powerpc/eeh: Remove EEH PE for normal PCI hotplug

2012-09-18T05:32:23Z

Function eeh_rmv_from_parent_pe() could be called by the path of either normal PCI hotplug, or EEH recovery. For the former case, we need purge the corresponding PE on removal of the associated PE bus. The patch tries to cover that by passing more information to function pcibios_remove_pci_devices() so that we know if the corresponding PE needs to be purged or be marked as "invalid". Signed-off-by: Gavin Shan Signed-off-by: Benjamin Herrenschmidt

PCI: Rename pci_remove_bus_device to pci_stop_and_remove_bus_device

2012-02-27T20:12:18Z

The old pci_remove_bus_device actually did stop and remove. Make the name reflect that to reduce confusion. This patch is done by sed scripts and changes back some incorrect __pci_remove_bus_device changes. Suggested-by: Jesse Barnes Signed-off-by: Yinghai Lu Signed-off-by: Jesse Barnes

pci: add module.h to files implicitly relying on its presence.

2011-10-31T23:31:23Z

These were getting module.h implicitly from device.h but we want to clean that up, so we fix it here to avoid things like: pci/slot.c: In function ‘pci_hp_create_module_link’: pci/slot.c:383: error: ‘module_kset’ undeclared (first use in this function) Similarly, rpadlpar_core.c is modular, so add module.h to its includes. Signed-off-by: Paul Gortmaker

pci/of: Match PCI devices to OF nodes dynamically

2011-06-07T23:08:17Z

powerpc has two different ways of matching PCI devices to their corresponding OF node (if any) for historical reasons. The ppc64 one does a scan looking for matching bus/dev/fn, while the ppc32 one does a scan looking only for matching dev/fn on each level in order to be agnostic to busses being renumbered (which Linux does on some platforms). This removes both and instead moves the matching code to the PCI core itself. It's the most logical place to do it: when a pci_dev is created, we know the parent and thus can do a single level scan for the matching device_node (if any). The benefit is that all archs now get the matching for free. There's one hook the arch might want to provide to match a PHB bus to its device node. A default weak implementation is provided that looks for the parent device device node, but it's not entirely reliable on powerpc for various reasons so powerpc provides its own. Signed-off-by: Benjamin Herrenschmidt Acked-by: Michal Simek Acked-by: Jesse Barnes

powerpc/pseries: Flush lazy kernel mappings after unplug operations

2010-04-28T06:23:24Z

This ensures that the translations for unmapped IO mappings or unmapped memory are properly removed from the MMU hash table before such an unplug. Without this, the hypervisor refuses the unplug operations due to those resources still being mapped by the partition. Signed-off-by: Benjamin Herrenschmidt