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exynos-linux-stable/drivers/pci/hotplug
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Keith Busch 2fd62929c8 PCI: pciehp: Report power fault only once until we clear it 
commit 7612b3b28c0b900dcbcdf5e9b9747cc20a1e2455 upstream.

When a power fault occurs, the power controller sets Power Fault Detected
in the Slot Status register, and pciehp_isr() queues an INT_POWER_FAULT
event to handle it.

It also clears Power Fault Detected, but since nothing has yet changed to
correct the power fault, the power controller will likely set it again
immediately, which may cause an infinite loop when pcie_isr() rechecks
Slot Status.

Fix that by masking off Power Fault Detected from new events if the driver
hasn't seen the power fault clear from the previous handling attempt.

Fixes: fad214b0aa ("PCI: pciehp: Process all hotplug events before looking for new ones")
Signed-off-by: Keith Busch <keith.busch@intel.com>
[bhelgaas: changelog, pull test out and add comment]
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Cc: Mayurkumar Patel <mayurkumar.patel@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-09-27 14:39:24 +02:00
..
acpi_pcihp.c PCI: Fix all whitespace issues 2016-01-08 10:35:24 -06:00
acpiphp.h PCI: Fix all whitespace issues 2016-01-08 10:35:24 -06:00
acpiphp_core.c PCI: Fix all whitespace issues 2016-01-08 10:35:24 -06:00
acpiphp_glue.c ACPI / hotplug / PCI: Runtime resume bridges before bus rescans 2016-08-04 21:33:58 -04:00
acpiphp_ibm.c PCI: acpiphp_ibm: Avoid uninitialized variable reference 2016-04-15 10:17:03 -05:00
cpci_hotplug.h PCI: hotplug: Make core explicitly non-modular 2016-08-24 17:20:14 -05:00
cpci_hotplug_core.c PCI: hotplug: Make core explicitly non-modular 2016-08-24 17:20:14 -05:00
cpci_hotplug_pci.c PCI: Fix all whitespace issues 2016-01-08 10:35:24 -06:00
cpcihp_generic.c PCI: Fix all whitespace issues 2016-01-08 10:35:24 -06:00
cpcihp_zt5550.c PCI: Fix all whitespace issues 2016-01-08 10:35:24 -06:00
cpcihp_zt5550.h PCI: Fix whitespace, capitalization, and spelling errors 2013-11-14 11:28:18 -07:00
cpqphp.h PCI: Fix all whitespace issues 2016-01-08 10:35:24 -06:00
cpqphp_core.c PCI: Fix all whitespace issues 2016-01-08 10:35:24 -06:00
cpqphp_ctrl.c PCI: Fix all whitespace issues 2016-01-08 10:35:24 -06:00
cpqphp_nvram.c PCI: Fix all whitespace issues 2016-01-08 10:35:24 -06:00
cpqphp_nvram.h PCI: Remove "extern" from function declarations 2013-04-17 10:21:17 -06:00
cpqphp_pci.c PCI: Fix all whitespace issues 2016-01-08 10:35:24 -06:00
cpqphp_sysfs.c PCI: Fix all whitespace issues 2016-01-08 10:35:24 -06:00
ibmphp.h PCI: Fix all whitespace issues 2016-01-08 10:35:24 -06:00
ibmphp_core.c Merge branch 'pci/trivial' into next 2016-01-20 11:48:25 -06:00
ibmphp_ebda.c Merge branch 'pci/trivial' into next 2016-01-20 11:48:25 -06:00
ibmphp_hpc.c Merge branch 'pci/trivial' into next 2016-01-20 11:48:25 -06:00
ibmphp_pci.c Merge branch 'pci/trivial' into next 2016-01-20 11:48:25 -06:00
ibmphp_res.c Merge branch 'pci/trivial' into next 2016-01-20 11:48:25 -06:00
Kconfig PCI/hotplug: PowerPC PowerNV PCI hotplug driver 2016-06-21 15:30:58 +10:00
Makefile PCI/hotplug: PowerPC PowerNV PCI hotplug driver 2016-06-21 15:30:58 +10:00
pci_hotplug_core.c PCI: hotplug: Make core explicitly non-modular 2016-08-24 17:20:14 -05:00
pciehp.h PCI: pciehp: Allow exclusive userspace control of indicators 2016-09-22 18:20:11 -05:00
pciehp_core.c Merge branch 'pci/hotplug' into next 2016-10-03 09:43:19 -05:00
pciehp_ctrl.c PCI: pciehp: Remove useless pciehp_get_latch_status() calls 2016-09-14 14:25:05 -05:00
pciehp_hpc.c PCI: pciehp: Report power fault only once until we clear it 2017-09-27 14:39:24 +02:00
pciehp_pci.c PCI: pciehp: Remove pci_configure_slot() usage 2014-09-12 20:09:47 -06:00
pcihp_skeleton.c Merge branch 'pci/trivial' into next 2016-01-20 11:48:25 -06:00
pnv_php.c drivers/pci/hotplug: Fix initial state for empty slot 2017-03-15 10:02:46 +08:00
rpadlpar.h PCI: Remove "extern" from function declarations 2013-04-17 10:21:17 -06:00
rpadlpar_core.c powerpc/pci/rpadlpar: Fix device reference leaks 2017-01-12 11:39:37 +01:00
rpadlpar_sysfs.c PCI: introduce pci_slot 2008-06-10 14:37:03 -07:00
rpaphp.h PCI: Fix all whitespace issues 2016-01-08 10:35:24 -06:00
rpaphp_core.c powerpc/pci: Rename pcibios_{add, remove}_pci_devices() 2016-05-11 21:54:23 +10:00
rpaphp_pci.c powerpc/pci: Rename pcibios_find_pci_bus() 2016-05-11 21:54:24 +10:00
rpaphp_slot.c PCI: rpaphp: Fix slot registration for multiple slots under a PHB 2016-07-20 11:54:55 +10:00
s390_pci_hpc.c s390/pci: remove pdev pointer from arch data 2016-02-23 08:56:16 +01:00
sgi_hotplug.c PCI: Fix all whitespace issues 2016-01-08 10:35:24 -06:00
shpchp.h PCI: shpchp: Constify hpc_ops structure 2016-01-08 12:10:00 -06:00
shpchp_core.c Merge branch 'pci/trivial' into next 2016-01-20 11:48:25 -06:00
shpchp_ctrl.c PCI: Remove assignment from "if" conditions 2014-09-24 07:50:53 -06:00
shpchp_hpc.c PCI: shpchp: Enable bridge bus mastering if MSI is enabled 2017-09-27 14:39:23 +02:00
shpchp_pci.c PCI: shpchp: Remove pci_configure_slot() usage 2014-09-12 20:09:49 -06:00
shpchp_sysfs.c PCI: Use to_pci_dev() instead of open-coding it 2016-01-08 12:05:39 -06:00