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Rafael J. Wysocki 7bed50c5ed ACPI / PM: Avoid infinite recurrence while registering power resources 
There is at least one BIOS with a DSDT containing a power resource
object with a _PR0 entry pointing back to that power resource.  In
consequence, while registering that power resource
acpi_bus_get_power_flags() sees that it depends on itself and tries
to register it again, which leads to an infinitely deep recurrence.
This problem was introduced by commit bf325f9538
(ACPI / PM: Register power resource devices as soon as they are
needed).

To fix this problem use the observation that power resources cannot
be power manageable and prevent acpi_bus_get_power_flags() from
being called for power resource objects.

References: https://bugzilla.kernel.org/show_bug.cgi?id=31872
Reported-and-tested-by: Pascal Dormeau <pdormeau@free.fr>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Len Brown <lenb@kernel.org>
Cc: stable@kernel.org
 		2011-04-26 11:33:18 +02:00
..
acpica Merge branch 'reset' into release 2011-03-23 02:34:15 -04:00
apei Fix common misspellings 2011-03-31 11:26:23 -03:00
Kconfig PM / ACPI: Remove references to pm_flags from bus.c 2011-03-15 00:43:15 +01:00
Makefile Merge branch 'ipmi' into release 2011-01-12 05:03:13 -05:00
ac.c Merge branch 'procfs-cleanup' into release 2011-01-12 05:00:07 -05:00
acpi_ipmi.c IPMI/ACPI: Add the IPMI opregion driver to enable ACPI to access BMC controller 2010-12-14 00:22:14 -05:00
acpi_memhotplug.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
acpi_pad.c ACPI: minor printk format change in acpi_pad 2011-03-23 01:36:45 -04:00
atomicio.c ACPI, APEI, Fix acpi_pre_map() return value 2010-09-29 14:02:16 -04:00
battery.c ACPI battery: fribble sysfs files from a resume notifier 2011-03-22 23:30:31 -04:00
blacklist.c Merge branch 'msi-dmi' into release 2010-10-08 22:37:46 -04:00
bus.c PM: Drop pm_flags that is not necessary 2011-03-15 00:43:16 +01:00
button.c ACPI button: remove unused procfs I/F 2011-03-22 23:20:35 -04:00
cm_sbs.c ACPI: Move definition of PREFIX from acpi_bus.h to internal..h 2009-08-28 19:57:27 -04:00
container.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
debugfs.c ACPI / debugfs: Fix buffer overflows, double free 2011-02-24 19:59:06 +01:00
dock.c ACPICA: Rename some function and variable names 2011-01-12 04:24:40 -05:00
ec.c ACPICA: Implicit notify support 2011-01-12 04:27:00 -05:00
ec_sys.c ACPI: Remove the unused EC sysdev class 2011-03-18 18:22:20 -04:00
event.c llseek: automatically add .llseek fop 2010-10-15 15:53:27 +02:00
fan.c ACPI / Fan: Rework the handling of power resources 2011-01-12 04:48:45 -05:00
glue.c ACPI / PM: Drop special ACPI wakeup flags 2011-01-07 01:18:00 -05:00
hed.c ACPI Hardware Error Device (PNP0C33) support 2010-05-19 22:40:24 -04:00
internal.h ACPI: Remove the unused EC sysdev class 2011-03-18 18:22:20 -04:00
numa.c x86-64, NUMA: Unify {acpi|amd}_{numa_init|scan_nodes}() arguments and return values 2011-02-16 12:13:06 +01:00
nvs.c ACPI / PM: Use existing ACPI iomaps for NVS save/restore (v2) 2011-02-24 19:58:42 +01:00
osl.c Merge branch 'linus' into release 2011-03-23 02:34:54 -04:00
pci_bind.c PCI / ACPI / PM: Platform support for PCI PME wake-up 2010-02-22 16:21:02 -08:00
pci_irq.c ACPI: remove unused declaration of proc_fs.h 2010-10-15 22:03:36 -04:00
pci_link.c ACPI: Use syscore_ops instead of sysdev class and sysdev 2011-03-18 18:22:21 -04:00
pci_root.c PCI: Disable ASPM when _OSC control is not granted for PCIe services 2011-03-21 09:41:08 -07:00
pci_slot.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
power.c ACPI / PM: Check status of power resources under mutexes 2011-01-12 05:05:39 -05:00
power_meter.c power_meter: acpi_device_class "power_meter_resource" too long 2010-05-06 02:38:24 -04:00
proc.c ACPI / PM: Use device wakeup flags for handling ACPI wakeup devices 2011-01-07 01:17:41 -05:00
processor_core.c ACPI: use __cpuinit for the acpi_processor_set_pdc() call tree 2011-03-02 20:58:20 -05:00
processor_driver.c ACPI: use __init where possible in processor driver 2011-03-02 20:56:53 -05:00
processor_idle.c Merge branch 'linus' into idle-test 2011-01-12 18:06:06 -05:00
processor_perflib.c ACPI: Fix typos 2010-09-28 21:38:19 -04:00
processor_thermal.c ACPI thermal: remove two unused functions 2010-12-11 02:01:47 -05:00
processor_throttling.c Fix common misspellings 2011-03-31 11:26:23 -03:00
reboot.c ACPI: Make sure the FADT is at least rev 2 before using the reset register 2011-03-22 23:52:49 -04:00
sbs.c ACPI: delete CONFIG_ACPI_PROCFS_POWER and power procfs I/F in 2.6.39 2011-01-12 00:36:17 -05:00
sbshc.c sbshc: acpi_device_class "smbus_host_controller" too long 2010-05-06 02:38:25 -04:00
sbshc.h ACPI: SBS: Ignore alarms coming from unknown devices 2007-12-14 15:14:06 -05:00
scan.c ACPI / PM: Avoid infinite recurrence while registering power resources 2011-04-26 11:33:18 +02:00
sleep.c Merge branch 'linus' into release 2011-03-23 02:34:54 -04:00
sleep.h ACPI: static sleep_states[] and acpi_gts_bfs_check 2010-10-19 13:44:37 -04:00
sysfs.c ACPICA: Global event handler 2011-01-12 04:27:00 -05:00
tables.c ACPI: delete the "acpi=ht" boot option 2010-03-14 20:58:38 -04:00
thermal.c ACPI / Fan: Rework the handling of power resources 2011-01-12 04:48:45 -05:00
utils.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
video.c Fix common misspellings 2011-03-31 11:26:23 -03:00
video_detect.c ACPI / Video: Probe for output switch method when searching video devices. 2011-02-12 01:40:16 +01:00
wakeup.c ACPI / Wakeup: Enable button GPEs unconditionally during initialization 2011-02-12 01:39:53 +01:00