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Marc Zyngier 504632a357 ACPI: GTDT: Don't corrupt interrupt mappings on watchdow probe failure 
commit 1ecd5b1292 upstream.

When failing the driver probe because of invalid firmware properties,
the GTDT driver unmaps the interrupt that it mapped earlier.

However, it never checks whether the mapping of the interrupt actially
succeeded. Even more, should the firmware report an illegal interrupt
number that overlaps with the GIC SGI range, this can result in an
IPI being unmapped, and subsequent fireworks (as reported by Dann
Frazier).

Rework the driver to have a slightly saner behaviour and actually
check whether the interrupt has been mapped before unmapping things.

Reported-by: dann frazier <dann.frazier@canonical.com>
Fixes: ca9ae5ec4e ("acpi/arm64: Add SBSA Generic Watchdog support in GTDT driver")
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/YH87dtTfwYgavusz@xps13.dannf
Cc: <stable@vger.kernel.org>
Cc: Fu Wei <wefu@redhat.com>
Reviewed-by: Sudeep Holla <sudeep.holla@arm.com>
Tested-by: dann frazier <dann.frazier@canonical.com>
Tested-by: Hanjun Guo <guohanjun@huawei.com>
Reviewed-by: Hanjun Guo <guohanjun@huawei.com>
Reviewed-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Link: https://lore.kernel.org/r/20210421164317.1718831-2-maz@kernel.org
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-05-11 14:04:14 +02:00
..
acpica
ACPICA: Fix race in generic_serial_bus (I2C) and GPIO op_region parameter handling
2021-03-11 14:06:49 +01:00
apei
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arm64
ACPI: GTDT: Don't corrupt interrupt mappings on watchdow probe failure
2021-05-11 14:04:14 +02:00
dptf
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hmat
ACPI: HMAT: Fix handling of changes from ACPI 6.2 to ACPI 6.3
2020-11-05 11:43:19 +01:00
nfit
ACPI: NFIT: Fix comparison to '-ENXIO'
2020-11-10 12:37:31 +01:00
pmic
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x86
…
ac.c
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acpi_adxl.c
…
acpi_amba.c
…
acpi_apd.c
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acpi_cmos_rtc.c
…
acpi_configfs.c
ACPI: configfs: add missing check after configfs_register_default_group()
2021-03-04 10:26:40 +01:00
acpi_dbg.c
ACPI: debug: don't allow debugging when ACPI is disabled
2020-11-05 11:43:25 +01:00
acpi_extlog.c
ACPI / extlog: Check for RDMSR failure
2020-11-05 11:43:24 +01:00
acpi_ipmi.c
…
acpi_lpat.c
…
acpi_lpit.c
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acpi_lpss.c
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acpi_memhotplug.c
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acpi_pad.c
…
acpi_platform.c
…
acpi_pnp.c
ACPI: PNP: compare the string length in the matching_id()
2020-12-30 11:51:32 +01:00
acpi_processor.c
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acpi_tad.c
…
acpi_video.c
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acpi_watchdog.c
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battery.c
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bgrt.c
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blacklist.c
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bus.c
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button.c
ACPI: button: Add DMI quirk for Medion Akoya E2228T
2020-11-24 13:29:00 +01:00
cm_sbs.c
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container.c
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cppc_acpi.c
ACPI: CPPC: Fix reference count leak in acpi_cppc_processor_probe()
2020-06-17 16:40:28 +02:00
custom_method.c
ACPI: custom_method: fix a possible memory leak
2021-05-11 14:04:01 +02:00
debugfs.c
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device_pm.c
PM: ACPI: PCI: Drop acpi_pm_set_bridge_wakeup()
2020-12-30 11:51:32 +01:00
device_sysfs.c
ACPI: sysfs: Prefer "compatible" modalias
2021-02-03 23:25:56 +01:00
dock.c
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ec_sys.c
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ec.c
ACPI: EC: PM: Drop ec_no_wakeup check from acpi_ec_dispatch_gpe()
2020-11-05 11:43:25 +01:00
event.c
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evged.c
ACPI: GED: fix -Wformat
2020-11-22 10:14:12 +01:00
fan.c
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glue.c
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hed.c
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internal.h
ACPI: scan: Use unique number for instance_no
2021-03-30 14:35:28 +02:00
ioapic.c
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irq.c
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Kconfig
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Makefile
ACPI: Always build evged in
2020-10-17 10:11:22 +02:00
numa.c
ACPI: Add out of bounds and numa_off protections to pxm_to_node()
2020-11-05 11:43:18 +01:00
nvs.c
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osi.c
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osl.c
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pci_irq.c
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pci_link.c
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pci_mcfg.c
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pci_root.c
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pci_slot.c
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power.c
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pptt.c
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proc.c
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processor_core.c
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processor_driver.c
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processor_idle.c
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processor_pdc.c
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processor_perflib.c
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processor_thermal.c
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processor_throttling.c
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property.c
ACPI: property: Fix fwnode string properties matching
2021-03-04 10:26:40 +01:00
reboot.c
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resource.c
Revert "ACPI / resources: Use AE_CTRL_TERMINATE to terminate resources walks"
2020-12-30 11:51:32 +01:00
sbs.c
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sbshc.c
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sbshc.h
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scan.c
ACPI: scan: Use unique number for instance_no
2021-03-30 14:35:28 +02:00
sleep.c
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sleep.h
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spcr.c
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sysfs.c
ACPI: sysfs: Fix pm_profile_attr type
2020-06-30 15:37:06 -04:00
tables.c
ACPI: tables: x86: Reserve memory occupied by ACPI tables
2021-05-07 10:51:36 +02:00
thermal.c
ACPI: thermal: Do not call acpi_thermal_check() directly
2021-02-07 15:35:47 +01:00
utils.c
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video_detect.c
ACPI: video: Add missing callback back for Sony VPCEH3U1E
2021-03-30 14:35:23 +02:00
wakeup.c
…