AuxXxilium/linux_dsm_epyc7002
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linux_dsm_epyc7002/drivers/pci/hotplug
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Sergey Miroshnichenko 3943af9d01 PCI: pciehp: Ignore Link State Changes after powering off a slot 
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+
2019-04-10 16:06:43 -05:00
..
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 Merge branch 'xarray' of git://git.infradead.org/users/willy/linux-dax 2018-10-28 11:35:40 -07:00
acpiphp_glue.c Update email address 2018-09-29 22:47:48 -04:00
acpiphp_ibm.c PCI: hotplug: Embed hotplug_slot 2018-09-18 17:52:15 -05:00
acpiphp.h Merge branch 'xarray' of git://git.infradead.org/users/willy/linux-dax 2018-10-28 11:35:40 -07:00
cpci_hotplug_core.c PCI: hotplug: Embed hotplug_slot 2018-09-18 17:52:15 -05:00
cpci_hotplug_pci.c PCI: hotplug: Embed hotplug_slot 2018-09-18 17:52:15 -05:00
cpci_hotplug.h PCI: hotplug: Embed hotplug_slot 2018-09-18 17:52:15 -05:00
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: cpqphp: Remove set but not used variable 'physical_slot' 2018-10-02 16:04:40 -05:00
cpqphp_ctrl.c PCI: hotplug: Embed hotplug_slot 2018-09-18 17:52:15 -05:00
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: hotplug: Embed hotplug_slot 2018-09-18 17:52:15 -05:00
ibmphp_core.c PCI: ibmphp: Turn semaphores into completions or mutexes 2019-01-29 17:15:36 -06:00
ibmphp_ebda.c PCI: hotplug: Embed hotplug_slot 2018-09-18 17:52:15 -05:00
ibmphp_hpc.c PCI: ibmphp: Turn semaphores into completions or mutexes 2019-01-29 17:15:36 -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: ibmphp: Turn semaphores into completions or mutexes 2019-01-29 17:15:36 -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: Drop hotplug_slot_info 2018-09-18 17:52:15 -05:00
pciehp_core.c PCI: pciehp: Implement runtime PM callbacks 2018-10-02 16:04:40 -05:00
pciehp_ctrl.c PCI: pciehp: Ignore Link State Changes after powering off a slot 2019-04-10 16:06:43 -05:00
pciehp_hpc.c Merge branch 'pci/pm' 2019-03-06 15:30:15 -06:00
pciehp_pci.c PCI: pciehp: Unify controller and slot structs 2018-09-18 17:52:15 -05:00
pciehp.h PCI: pciehp: Disable hotplug interrupt during suspend 2018-10-02 16:04:40 -05:00
pnv_php.c powerpc updates for 4.20 2018-10-26 14:36:21 -07:00
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: Embed hotplug_slot 2018-09-18 17:52:15 -05:00
rpaphp_pci.c PCI: hotplug: Drop hotplug_slot_info 2018-09-18 17:52:15 -05:00
rpaphp_slot.c PCI: hotplug: Embed hotplug_slot 2018-09-18 17:52:15 -05:00
rpaphp.h PCI: hotplug: Embed hotplug_slot 2018-09-18 17:52:15 -05:00
s390_pci_hpc.c PCI: hotplug: Embed hotplug_slot 2018-09-18 17:52:15 -05:00
sgi_hotplug.c PCI: hotplug: Embed hotplug_slot 2018-09-18 17:52:15 -05:00
shpchp_core.c PCI: hotplug: Embed hotplug_slot 2018-09-18 17:52:15 -05:00
shpchp_ctrl.c PCI: hotplug: Drop hotplug_slot_info 2018-09-18 17:52:15 -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: hotplug: Embed hotplug_slot 2018-09-18 17:52:15 -05:00
TODO PCI: hotplug: Document TODOs 2018-09-18 17:52:15 -05:00