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181380b702
linux/drivers/acpi
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Yinghai Lu 181380b702 PCI/ACPI: Don't cache _PRT, and don't associate them with bus numbers 
Previously, we cached _PRT (PCI routing table, ACPI 5.0 sec 6.2.12)
contents and associated each _PRT entry with a PCI bus number.  The bus
number association means dependencies on PCI device enumeration and bus
number assignment, as well as on the PCI/ACPI binding process.

After 4f535093cf ("PCI: Put pci_dev in device tree as early as possible"),
these dependencies caused the IRQ issues reported by Peter:

    pci 0000:00:1e.0: PCI bridge to [bus 09] (subtractive decode)
    pci 0000:00:1e.0: can't derive routing for PCI INT A
    snd_ctxfi 0000:09:02.0: PCI INT A: no GSI - using ISA IRQ 5
    irq 18: nobody cared (try booting with the "irqpoll" option)

This patch removes _PRT caching.  Instead, we evaluate _PRT as needed
in the pci_enable_device() path.  This also removes the dependency on
PCI bus numbers: we can simply look at the _PRT associated with each
bridge as we walk upstream toward the root.

[bhelgaas: changelog]
Reference: https://bugzilla.kernel.org/show_bug.cgi?id=53561
Reported-and-tested-by: Peter Hurley <peter@hurleysoftware.com>
Suggested-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2013-02-16 11:58:34 -07:00
..
acpica Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2012-12-13 12:00:02 -08:00
apei Trivial fix for error injection code using ACPI5 version of EINJ 2012-12-12 07:54:53 -08:00
ac.c ACPI / PM: Fix unused function warnings for CONFIG_PM_SLEEP 2012-08-10 13:35:32 +02:00
acpi_i2c.c i2c / ACPI: add ACPI enumeration support 2012-11-23 12:23:40 +01:00
acpi_ipmi.c
acpi_memhotplug.c ACPI / scan: Drop acpi_bus_add() and use acpi_bus_scan() instead 2013-01-19 01:27:35 +01:00
acpi_pad.c ACPI: strict_strtoul() and printk() cleanup in acpi_pad 2012-11-15 00:16:00 +01:00
acpi_platform.c ACPI / platform: include missed header into acpi_platform.c 2012-11-27 13:44:58 +01:00
battery.c ACPI / battery: Correct battery capacity values on Thinkpads 2012-11-16 22:28:58 +01:00
bgrt.c efi: Fix the ACPI BGRT driver for images located in EFI boot services memory 2012-09-29 12:21:03 -07:00
blacklist.c acpi: delete module.h include from files explicitly not needing it 2011-10-31 19:30:33 -04:00
bus.c ACPI / PM: Add check preventing transitioning to non-D0 state from D3. 2012-11-16 02:46:28 +01:00
button.c ACPI/button: convert to module_acpi_driver() 2012-09-21 13:38:29 -04:00
cm_sbs.c
container.c ACPI / scan: Drop acpi_bus_add() and use acpi_bus_scan() instead 2013-01-19 01:27:35 +01:00
custom_method.c ACPI: Split out custom_method functionality into an own driver 2011-05-29 01:50:40 -04:00
debugfs.c acpi: add export.h to files using THIS_MODULE/EXPORT_SYMBOL 2011-10-31 19:30:34 -04:00
device_pm.c ACPI / PCI: Rework the setup and cleanup of device wakeup 2013-01-03 13:09:41 +01:00
dock.c ACPI / scan: Drop acpi_bus_add() and use acpi_bus_scan() instead 2013-01-19 01:27:35 +01:00
ec_sys.c simple_open: automatically convert to simple_open() 2012-04-05 15:25:50 -07:00
ec.c ACPI / EC: Don't count a SCI interrupt as a false one 2012-11-15 00:15:59 +01:00
event.c acpi: add export.h to files using THIS_MODULE/EXPORT_SYMBOL 2011-10-31 19:30:34 -04:00
fan.c ACPI/fan: convert to module_acpi_driver() 2012-09-21 13:39:03 -04:00
glue.c ACPI: Add .setup() and .cleanup() callbacks to struct acpi_bus_type 2013-01-03 13:09:40 +01:00
hed.c Driver core updates for 3.8-rc1 2012-12-11 13:13:55 -08:00
internal.h PCI: acpiphp: Move host bridge hotplug to pci_root.c 2013-01-25 14:50:36 -07:00
Kconfig Merge branch 'x86-acpi-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2012-12-14 10:03:23 -08:00
Makefile ACPI / PCI: Move the _PRT setup and cleanup code to pci-acpi.c 2013-01-03 13:09:41 +01:00
numa.c ACPI: Only count valid srat memory structures 2012-08-03 00:15:53 -04:00
nvs.c ACPI / PM: print physical addresses consistently with other parts of kernel 2012-03-30 02:46:57 -04:00
osl.c PCI/ACPI: acpiphp: Rename alloc_acpiphp_hp_work() to alloc_acpi_hp_work() 2013-01-25 14:43:22 -07:00
pci_irq.c PCI/ACPI: Don't cache _PRT, and don't associate them with bus numbers 2013-02-16 11:58:34 -07:00
pci_link.c acpi: use KERN_CONT in printk() continuation lines 2012-05-08 08:55:26 -07:00
pci_root.c PCI/ACPI: Don't cache _PRT, and don't associate them with bus numbers 2013-02-16 11:58:34 -07:00
pci_slot.c PCI/ACPI: Use acpi_pci_root info rather than looking it up again 2012-09-24 15:29:40 -06:00
power.c ACPI: add newline in power.c message 2012-11-15 00:18:21 +01:00
proc.c ACPI: drop unnecessary local variable from acpi_system_write_wakeup_device() 2012-11-22 23:20:31 +01:00
processor_core.c cpufreq / ACPI: Fix not loading acpi-cpufreq driver regression 2012-07-12 22:39:32 +02:00
processor_driver.c ACPI / scan: Drop acpi_bus_add() and use acpi_bus_scan() instead 2013-01-19 01:27:35 +01:00
processor_idle.c cpuidle: Measure idle state durations with monotonic clock 2012-11-27 14:17:58 +01:00
processor_perflib.c ACPI: Add fixups for AMD P-state figures 2012-09-09 22:05:02 +02:00
processor_thermal.c ACPI: Do cpufreq clamping for throttling per package v2 2012-03-22 02:16:14 -04:00
processor_throttling.c ACPI throttling: fix endian bug in acpi_read_throttling_status() 2012-03-30 16:06:12 -04:00
reboot.c Revert "ACPI: ignore FADT reset-reg-sup flag" 2012-04-20 11:19:35 -07:00
resource.c ACPI: remove unnecessary INIT_LIST_HEAD 2012-11-27 13:49:36 +01:00
sbs.c ACPI / PM: Fix unused function warnings for CONFIG_PM_SLEEP 2012-08-10 13:35:32 +02:00
sbshc.c ACPI/sbshc: convert to module_acpi_driver() 2012-09-21 13:39:40 -04:00
sbshc.h
scan.c PCI: acpiphp: Move host bridge hotplug to pci_root.c 2013-01-25 14:50:36 -07:00
sleep.c Merge branch 'acpi-general' 2012-12-04 13:46:08 +01:00
sleep.h
sysfs.c ACPICA: Fix AcpiSrc caused divergences. 2012-11-15 00:31:23 +01:00
tables.c ACPI: Harden acpi_table_parse_entries() against BIOS bug 2012-10-06 15:51:49 -04:00
thermal.c Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux 2012-12-12 07:57:13 -08:00
utils.c ACPI: Add acpi_handle_<level>() interfaces 2012-11-21 23:20:22 +01:00
video_detect.c ACPI / video: Add "Asus UL30VT" to ACPI video detect blacklist 2012-11-30 13:02:50 +01:00
video.c ACPI / video: ignore BIOS initial backlight value for HP Folio 13-2000 2012-12-04 23:30:19 +01:00
wakeup.c ACPI / Wakeup: Enable button GPEs unconditionally during initialization 2011-02-12 01:39:53 +01:00