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linux/drivers/pci/hotplug
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Sergey Miroshnichenko 5be6e02cfb PCI: pciehp: Ignore Link State Changes after powering off a slot 
commit 3943af9d01 upstream.

During a safe hot remove, the OS powers off the slot, which may cause a
Data Link Layer State Changed event.  The slot has already been set to
OFF_STATE, so that event results in re-enabling the device, making it
impossible to safely remove it.

Clear out the Presence Detect Changed and Data Link Layer State Changed
events when the disabled slot has settled down.

It is still possible to re-enable the device if it remains in the slot
after pressing the Attention Button by pressing it again.

Fixes the problem that Micah reported below: an NVMe drive power button may
not actually turn off the drive.

Link: https://bugzilla.kernel.org/show_bug.cgi?id=203237
Reported-by: Micah Parrish <micah.parrish@hpe.com>
Tested-by: Micah Parrish <micah.parrish@hpe.com>
Signed-off-by: Sergey Miroshnichenko <s.miroshnichenko@yadro.com>
[bhelgaas: changelog, add bugzilla URL]
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Lukas Wunner <lukas@wunner.de>
Cc: stable@vger.kernel.org	# v4.19+
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-04-17 08:38:54 +02:00
..
acpi_pcihp.c PCI: shpchp: Separate existence of SHPC and permission to use it 2018-06-26 15:38:28 -05:00
acpiphp_core.c PCI: hotplug: Demidlayer registration with the core 2018-07-23 17:04:13 -05:00
acpiphp_glue.c ACPI / hotplug / PCI: Don't scan for non-hotplug bridges if slot is not bridge 2018-09-26 15:39:28 -05:00
acpiphp_ibm.c More ACPI updates for v4.16-rc1 2018-02-09 09:44:25 -08:00
acpiphp.h PCI: Add SPDX GPL-2.0+ to replace GPL v2 or later boilerplate 2018-01-28 15:49:06 -06:00
cpci_hotplug_core.c PCI: hotplug: Demidlayer registration with the core 2018-07-23 17:04:13 -05:00
cpci_hotplug_pci.c PCI: Add SPDX GPL-2.0+ to replace GPL v2 or later boilerplate 2018-01-28 15:49:06 -06:00
cpci_hotplug.h PCI: Add SPDX GPL-2.0+ to replace GPL v2 or later boilerplate 2018-01-28 15:49:06 -06:00
cpcihp_generic.c PCI: Add SPDX GPL-2.0+ to replace GPL v2 or later boilerplate 2018-01-28 15:49:06 -06:00
cpcihp_zt5550.c PCI: Add SPDX GPL-2.0+ to replace GPL v2 or later boilerplate 2018-01-28 15:49:06 -06:00
cpcihp_zt5550.h PCI: Add SPDX GPL-2.0+ to replace GPL v2 or later boilerplate 2018-01-28 15:49:06 -06:00
cpqphp_core.c PCI: hotplug: Demidlayer registration with the core 2018-07-23 17:04:13 -05:00
cpqphp_ctrl.c PCI: cpqphp: Fix possible NULL pointer dereference 2018-02-28 14:35:54 -06:00
cpqphp_nvram.c PCI: Add SPDX GPL-2.0+ to replace GPL v2 or later boilerplate 2018-01-28 15:49:06 -06:00
cpqphp_nvram.h PCI: Add SPDX GPL-2.0+ to replace GPL v2 or later boilerplate 2018-01-28 15:49:06 -06:00
cpqphp_pci.c Merge branch 'pci/spdx' into next 2018-02-01 11:40:07 -06:00
cpqphp_sysfs.c PCI: Add SPDX GPL-2.0+ to replace GPL v2 or later boilerplate 2018-01-28 15:49:06 -06:00
cpqphp.h PCI: Add SPDX GPL-2.0+ to replace GPL v2 or later boilerplate 2018-01-28 15:49:06 -06:00
ibmphp_core.c PCI: hotplug: Demidlayer registration with the core 2018-07-23 17:04:13 -05:00
ibmphp_ebda.c PCI: hotplug: Demidlayer registration with the core 2018-07-23 17:04:13 -05:00
ibmphp_hpc.c PCI: Add SPDX GPL-2.0+ to replace GPL v2 or later boilerplate 2018-01-28 15:49:06 -06:00
ibmphp_pci.c Merge branch 'pci/spdx' into next 2018-02-01 11:40:07 -06:00
ibmphp_res.c Merge branch 'pci/spdx' into next 2018-02-01 11:40:07 -06:00
ibmphp.h PCI: Add SPDX GPL-2.0+ to replace GPL v2 or later boilerplate 2018-01-28 15:49:06 -06:00
Kconfig PCI: shpchp: Convert SHPC to be builtin only 2018-06-02 00:18:28 -05:00
Makefile License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
pci_hotplug_core.c PCI: hotplug: Demidlayer registration with the core 2018-07-23 17:04:13 -05:00
pciehp_core.c PCI: pciehp: Deduplicate presence check on probe & resume 2018-07-31 13:27:24 -05:00
pciehp_ctrl.c PCI: pciehp: Ignore Link State Changes after powering off a slot 2019-04-17 08:38:54 +02:00
pciehp_hpc.c PCI: pciehp: Fix hot-add vs powerfault detection order 2018-09-11 08:47:42 -05:00
pciehp_pci.c PCI: pciehp: Declare pciehp_unconfigure_device() void 2018-07-23 17:04:11 -05:00
pciehp.h PCI: pciehp: Support interrupts sent from D3hot 2018-07-31 11:08:56 -05:00
pnv_php.c PCI: hotplug: Demidlayer registration with the core 2018-07-23 17:04:13 -05:00
rpadlpar_core.c pci-v4.16-changes 2018-02-06 09:59:40 -08:00
rpadlpar_sysfs.c pci-v4.16-changes 2018-02-06 09:59:40 -08:00
rpadlpar.h PCI: Add SPDX GPL-2.0+ to replace GPL v2 or later boilerplate 2018-01-28 15:49:06 -06:00
rpaphp_core.c PCI: hotplug: Demidlayer registration with the core 2018-07-23 17:04:13 -05:00
rpaphp_pci.c PCI: Add SPDX GPL-2.0+ to replace GPL v2 or later boilerplate 2018-01-28 15:49:06 -06:00
rpaphp_slot.c PCI: hotplug: Demidlayer registration with the core 2018-07-23 17:04:13 -05:00
rpaphp.h pci-v4.16-changes 2018-02-06 09:59:40 -08:00
s390_pci_hpc.c PCI: hotplug: Demidlayer registration with the core 2018-07-23 17:04:13 -05:00
sgi_hotplug.c PCI: hotplug: Demidlayer registration with the core 2018-07-23 17:04:13 -05:00
shpchp_core.c PCI: hotplug: Demidlayer registration with the core 2018-07-23 17:04:13 -05:00
shpchp_ctrl.c PCI: Mark fall-through switch cases before enabling -Wimplicit-fallthrough 2018-07-12 16:55:57 -05:00
shpchp_hpc.c PCI: Add SPDX GPL-2.0+ to replace GPL v2 or later boilerplate 2018-01-28 15:49:06 -06:00
shpchp_pci.c Merge branch 'pci/spdx' into next 2018-02-01 11:40:07 -06:00
shpchp_sysfs.c PCI: Add SPDX GPL-2.0+ to replace GPL v2 or later boilerplate 2018-01-28 15:49:06 -06:00
shpchp.h PCI: shpchp: Add shpchp_is_native() 2018-06-04 12:08:06 -05:00