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linux/drivers/pci/hotplug
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Alex Chiang 5d4a4b25dd PCI Hotplug: acpiphp: grab refcount on p2p subordinate bus 
If a logical hot unplug (remove) is performed on a bridge claimed
by acpiphp and then acpiphp is unloaded, we will encounter an oops.

This is because acpiphp will access the bridge's subordinate bus,
which was released by the user's prior hot unplug.

The solution is to grab a reference on the subordinate PCI bus.
This will prevent the bus from release until acpiphp is unloaded.

Reviewed-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Tested-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Reported-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: Alex Chiang <achiang@hp.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2009-04-06 11:30:26 -07:00
..
acpi_pcihp.c PCI hotplug: fix wrong assumption in acpi_get_hp_hw_control_from_firmware 2009-03-20 10:48:02 -07:00
acpiphp_core.c PCI hotplug: acpiphp wants a 64-bit _SUN 2008-12-16 13:26:46 -08:00
acpiphp_glue.c PCI Hotplug: acpiphp: grab refcount on p2p subordinate bus 2009-04-06 11:30:26 -07:00
acpiphp_ibm.c PCI: struct device - replace bus_id with dev_name(), dev_set_name() 2009-01-07 11:12:23 -08:00
acpiphp.h PCI hotplug: acpiphp whitespace cleanup 2009-01-07 11:12:42 -08:00
cpci_hotplug_core.c PCI: cpci_hotplug: stop managing hotplug_slot->name 2008-10-22 16:42:39 -07:00
cpci_hotplug_pci.c PCI: cpci_hotplug: stop managing hotplug_slot->name 2008-10-22 16:42:39 -07:00
cpci_hotplug.h PCI: cpci_hotplug: stop managing hotplug_slot->name 2008-10-22 16:42:39 -07:00
cpcihp_generic.c
cpcihp_zt5550.c
cpcihp_zt5550.h
cpqphp_core.c x86, pci: move arch/x86/pci/pci.h to arch/x86/include/asm/pci_x86.h 2008-12-29 18:17:36 +01:00
cpqphp_ctrl.c PCI hotplug: remove redundant test in cpq hotplug 2009-01-07 11:13:22 -08:00
cpqphp_nvram.c
cpqphp_nvram.h
cpqphp_pci.c PCI hotplug: cpqphp: use config space PCI interrupt pin encoding 2009-01-07 11:12:47 -08:00
cpqphp_sysfs.c PCI: struct device - replace bus_id with dev_name(), dev_set_name() 2009-03-19 19:29:24 -07:00
cpqphp.h PCI: cpqphp: stop managing hotplug_slot->name 2008-10-22 16:42:40 -07:00
fakephp.c PCI: update fakephp for bus_id removal 2009-03-26 16:00:34 -07:00
ibmphp_core.c x86, pci: move arch/x86/pci/pci.h to arch/x86/include/asm/pci_x86.h 2008-12-29 18:17:36 +01:00
ibmphp_ebda.c PCI: ibmphp: stop managing hotplug_slot->name 2008-10-22 16:42:41 -07:00
ibmphp_hpc.c
ibmphp_pci.c
ibmphp_res.c
ibmphp.h PCI: ibmphp: stop managing hotplug_slot->name 2008-10-22 16:42:41 -07:00
Kconfig powerpc/pseries: The RPA PCI hotplug driver depends on EEH 2009-03-12 15:10:02 -04:00
Makefile PCI Hotplug: rename legacy_fakephp to fakephp 2009-03-20 14:59:37 -07:00
pci_hotplug_core.c PCI: Hotplug core: remove 'name' 2008-10-22 16:42:43 -07:00
pciehp_acpi.c PCI: introduce missing kfree 2009-03-19 19:29:28 -07:00
pciehp_core.c PCI: PCIe portdrv: Implement pm object 2009-03-20 10:47:49 -07:00
pciehp_ctrl.c PCI hotplug: pciehp: remove unnecessary wait after turning power off 2009-01-07 11:12:21 -08:00
pciehp_hpc.c PCI: pciehp: enable software notification on empty slots 2009-03-19 19:29:29 -07:00
pciehp_pci.c PCI hotplug: pciehp: message refinement 2008-10-23 14:47:39 -07:00
pciehp.h PCI: pciehp: make cmd_busy flag one bit 2009-03-19 19:29:30 -07:00
pcihp_skeleton.c
rpadlpar_core.c powerpc/pci: Fix various pseries PCI hotplug issues 2008-11-06 09:31:52 +11:00
rpadlpar_sysfs.c
rpadlpar.h
rpaphp_core.c PCI hotplug: rpaphp: make debug var unique 2008-10-20 10:54:27 -07:00
rpaphp_pci.c PCI hotplug: rpaphp: make debug var unique 2008-10-20 10:54:27 -07:00
rpaphp_slot.c PCI: rpaphp: kmalloc/kfree slot->name directly 2008-10-22 16:42:42 -07:00
rpaphp.h PCI hotplug: rpaphp: make debug var unique 2008-10-20 10:54:27 -07:00
sgi_hotplug.c Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6 2008-10-23 10:20:36 -07:00
shpchp_core.c PCI hotplug: shpchp: message refinement 2008-10-23 16:14:00 -07:00
shpchp_ctrl.c PCI hotplug: shpchp: message refinement 2008-10-23 16:14:00 -07:00
shpchp_hpc.c PCI hotplug: shpchp: message refinement 2008-10-23 16:14:00 -07:00
shpchp_pci.c PCI hotplug: shpchp: fix bus number check to avoid false positive 2009-03-19 19:29:33 -07:00
shpchp_sysfs.c
shpchp.h PCI: add missing KERN_* constants to printks 2009-03-19 19:29:27 -07:00