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86314751c7
linux/drivers/acpi
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Rafael J. Wysocki 86314751c7 ACPI / processor: Avoid reserving IO regions too early 
Roland Dreier reports that one of his systems cannot boot because of
the changes made by commit ac212b6980 (ACPI / processor: Use common
hotplug infrastructure).

The problematic part of it is the request_region() call in
acpi_processor_get_info() that used to run at module init time before
the above commit and now it runs much earlier.  Unfortunately, the
region(s) reserved by it fall into a range the PCI subsystem attempts
to reserve for AHCI IO BARs.  As a result, the PCI reservation fails
and AHCI doesn't work, while previously the PCI reservation would
be made before acpi_processor_get_info() and it would succeed.

That request_region() call, however, was overlooked by commit
ac212b6980, as it is not necessary for the enumeration of the
processors.  It only is needed when the ACPI processor driver
actually attempts to handle them which doesn't happen before
loading the ACPI processor driver module.  Therefore that call
should have been moved from acpi_processor_get_info() into that
module.

Address the problem by moving the request_region() call in question
out of acpi_processor_get_info() and use the observation that the
region reserved by it is only needed if the FADT-based CPU
throttling method is going to be used, which means that it should
be sufficient to invoke it from acpi_processor_get_throttling_fadt().

Fixes: ac212b6980 (ACPI / processor: Use common hotplug infrastructure)
Reported-by: Roland Dreier <roland@purestorage.com>
Tested-by: Roland Dreier <roland@purestorage.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-06-02 01:57:50 +02:00
..
acpica Merge back new ACPICA material for v4.7. 2016-05-06 01:41:06 +02:00
apei Power management and ACPI material for v4.6-rc1, part 1 2016-03-16 14:10:53 -07:00
pmic drivers/acpi: make pmic/intel_pmic_crc.c explicitly non-modular 2016-03-09 23:46:07 +01:00
ac.c ACPI: Remove FSF mailing addresses 2015-07-08 02:27:32 +02:00
acpi_amba.c ACPI / amba: Remove CLK_IS_ROOT 2016-04-27 23:42:57 +02:00
acpi_apd.c ACPI / APD: Remove CLK_IS_ROOT 2016-04-27 23:42:57 +02:00
acpi_cmos_rtc.c ACPI / RTC: Fix CMOS RTC opregion handler accesses to wrong addresses 2014-09-08 15:38:41 +02:00
acpi_dbg.c remove lots of IS_ERR_VALUE abuses 2016-05-27 15:26:11 -07:00
acpi_extlog.c ACPI and power management updates for 3.17-rc1 2014-08-06 20:34:19 -07:00
acpi_ipmi.c ACPI: Remove FSF mailing addresses 2015-07-08 02:27:32 +02:00
acpi_lpat.c ACPI / LPAT: Common table processing functions 2015-01-29 21:02:10 +08:00
acpi_lpss.c ACPI / LPSS: set PM domain via helper setter 2016-02-03 01:08:22 +01:00
acpi_memhotplug.c ACPI: Remove FSF mailing addresses 2015-07-08 02:27:32 +02:00
acpi_pad.c ACPI / PAD: power_saving_thread() is not freezable 2015-10-26 04:42:54 +01:00
acpi_platform.c Power management and ACPI material for v4.6-rc1, part 1 2016-03-16 14:10:53 -07:00
acpi_pnp.c ACPI / PNP: constify device IDs 2016-01-04 22:10:30 +01:00
acpi_processor.c ACPI / processor: Avoid reserving IO regions too early 2016-06-02 01:57:50 +02:00
acpi_video.c ACPI/video: export acpi_video_get_levels 2016-05-04 23:41:14 +02:00
battery.c ACPI / battery: Correctly serialise with the pending async probe 2016-05-21 01:25:07 +02:00
battery.h ACPI / battery: move some ACPI_BATTERY_* definitions to header 2014-03-19 01:57:46 +01:00
bgrt.c drivers/acpi: make bgrt driver explicitly non-modular 2016-03-09 23:46:07 +01:00
blacklist.c ACPI / osi: Collect _OSI handling into one single file 2016-05-05 00:13:53 +02:00
bus.c ACPI 2.0 / ECDT: Enable correct ECDT initialization order 2016-04-09 03:06:44 +02:00
button.c ACPI: Remove FSF mailing addresses 2015-07-08 02:27:32 +02:00
cm_sbs.c ACPI: Remove FSF mailing addresses 2015-07-08 02:27:32 +02:00
container.c ACPI: Remove FSF mailing addresses 2015-07-08 02:27:32 +02:00
cppc_acpi.c ACPI / CPPC: use MRTT/MPAR to decide if/when a req can be sent 2016-03-09 23:35:29 +01:00
custom_method.c ACPI: Clean up inclusions of ACPI header files 2013-12-07 01:03:14 +01:00
debugfs.c ACPI: fix acpi_debugfs_init prototype 2015-08-07 02:55:18 +02:00
device_pm.c ACPI / PM: Export acpi_device_fix_up_power() 2016-05-20 15:54:01 +02:00
device_sysfs.c ACPI / device_sysfs: Clean up checkpatch errors 2016-05-04 23:47:32 +02:00
dock.c ACPI: Remove FSF mailing addresses 2015-07-08 02:27:32 +02:00
ec_sys.c ACPI / EC: Deny write access unless requested by module param 2016-03-09 23:26:15 +01:00
ec.c ACPI 2.0 / ECDT: Remove early namespace reference from EC 2016-04-09 03:06:44 +02:00
event.c netlink: make nlmsg_end() and genlmsg_end() void 2015-01-18 01:03:45 -05:00
evged.c ACPI / GED: make evged.c explicitly non-modular 2016-05-09 22:59:25 +02:00
fan.c ACPI / fan: Make struct dev_pm_ops const 2016-03-09 23:23:21 +01:00
glue.c Merge branch 'acpi-pci' 2015-11-07 01:30:10 +01:00
gsi.c ACPI: Rename acpi_gsi_get_irq_type to acpi_dev_get_irq_type and export symbol 2016-01-01 03:20:25 +01:00
hed.c ACPI: Remove FSF mailing addresses 2015-07-08 02:27:32 +02:00
int340x_thermal.c ACPI: Eliminate CONFIG_.*{, _MODULE} #ifdef in favor of IS_ENABLED() 2015-09-15 03:05:45 +02:00
internal.h Merge branches 'acpi-numa', 'acpi-tables' and 'acpi-osi' 2016-05-16 16:45:25 +02:00
ioapic.c x86/irq, ACPI: Implement ACPI driver to support IOAPIC hotplug 2015-02-05 15:09:26 +01:00
Kconfig Merge branches 'acpi-pci', 'acpi-misc' and 'acpi-tools' 2016-05-16 16:45:48 +02:00
Makefile Merge branches 'acpi-numa', 'acpi-tables' and 'acpi-osi' 2016-05-16 16:45:25 +02:00
nfit.c Merge branch 'for-4.7/acpi6.1' into libnvdimm-for-next 2016-05-18 10:07:19 -07:00
nfit.h Merge branch 'for-4.7/acpi6.1' into libnvdimm-for-next 2016-05-18 10:07:19 -07:00
numa.c ACPI / SRAT: fix SRAT parsing order with both LAPIC and X2APIC present 2016-04-21 22:13:03 +02:00
nvs.c ACPI: Clean up acpi_os_map/unmap_memory() to eliminate __iomem. 2014-05-27 18:13:08 +02:00
osi.c ACPI / osi: Collect _OSI handling into one single file 2016-05-05 00:13:53 +02:00
osl.c Merge branches 'acpi-numa', 'acpi-tables' and 'acpi-osi' 2016-05-16 16:45:25 +02:00
pci_irq.c x86/ACPI/PCI: Recognize that Interrupt Line 255 means "not connected" 2016-03-09 01:23:35 +01:00
pci_link.c ACPI,PCI,IRQ: remove SCI penalize function 2016-05-05 01:10:32 +02:00
pci_root.c x86/PCI/ACPI: Fix regression caused by commit 4d6b4e69a2 2015-12-02 02:30:15 +01:00
pci_slot.c ACPI: Remove FSF mailing addresses 2015-07-08 02:27:32 +02:00
power.c Merge branch 'acpi-pm' 2015-09-01 03:38:43 +02:00
proc.c ACPI: change acpi_sleep_proc_init() to return void 2015-09-15 03:03:15 +02:00
processor_core.c ACPI / processor: Introduce invalid_phys_cpuid() 2015-05-13 23:28:16 +02:00
processor_driver.c ACPI / sleep: move acpi_processor_sleep to sleep.c 2016-02-22 00:53:56 +01:00
processor_idle.c Power management and ACPI material for v4.6-rc1, part 1 2016-03-16 14:10:53 -07:00
processor_pdc.c ACPI / processor: Introduce invalid_logical_cpuid() 2015-05-13 23:28:14 +02:00
processor_perflib.c Merge branch 'pm-cpufreq' 2015-09-01 15:52:35 +02:00
processor_thermal.c ACPI: Remove FSF mailing addresses 2015-07-08 02:27:32 +02:00
processor_throttling.c ACPI / processor: Avoid reserving IO regions too early 2016-06-02 01:57:50 +02:00
property.c ACPI / property: fix data node parsing in acpi_get_next_subnode() 2016-03-17 03:06:38 +01:00
reboot.c
resource.c PCI: ACPI: IA64: fix IO port generic range check 2016-03-22 23:07:49 +01:00
sbs.c ACPI / SBS: fix inconsistent indenting inside if statement 2016-01-04 22:14:27 +01:00
sbshc.c Revert "ACPI / SBS: Add 5 us delay to fix SBS hangs on MacBook" 2015-11-16 23:26:45 +01:00
sbshc.h
scan.c ACPI / scan: AMBA bus probing support 2016-02-16 19:58:25 +01:00
sleep.c ACPI / PM: Introduce efi poweroff for HW-full platforms without _S5 2016-04-09 02:11:43 +02:00
sleep.h ACPICA: Drop Linux-specific waking vector functions 2016-01-04 22:05:20 +01:00
sysfs.c ACPI / sysfs: fix error code in get_status() 2016-05-05 15:28:58 +02:00
tables.c ACPI / tables: Fix DSDT override mechanism 2016-05-06 13:20:11 +02:00
thermal.c linux/thermal.h: rename KELVIN_TO_CELSIUS to DECI_KELVIN_TO_CELSIUS 2015-10-10 11:32:30 +08:00
utils.c libnvdimm for 4.7 2016-05-23 11:18:01 -07:00
video_detect.c video / backlight: remove the backlight_device_registered API 2016-05-04 23:41:14 +02:00
wakeup.c ACPI: Clean up inclusions of ACPI header files 2013-12-07 01:03:14 +01:00