AuxXxilium/linux_dsm_epyc7002
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9590192f25
linux_dsm_epyc7002/drivers/pci/hotplug
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Lukas Wunner 9590192f25 PCI: pciehp: Track enable/disable status 
handle_button_press_event() currently determines whether the slot has
been turned on or off by looking at the Power Controller Control bit in
the Slot Control register.  This assumes that an attention button
implies presence of a power controller even though that's not mandated
by the spec.  Moreover the Power Controller Control bit is unreliable
when a power fault occurs (PCIe r4.0, sec 6.7.1.8).  This issue has
existed since the driver was introduced in 2004.

Fix by replacing STATIC_STATE with ON_STATE and OFF_STATE and tracking
whether the slot has been turned on or off.  This is also a required
ingredient to make pciehp resilient to missed events, which is the
object of an upcoming commit.

Signed-off-by: Lukas Wunner <lukas@wunner.de>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2018-07-23 17:04:14 -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 PCI: hotplug: Demidlayer registration with the core 2018-07-23 17:04:13 -05:00
acpiphp_glue.c ACPI / hotplug / PCI: Drop unnecessary parentheses 2018-06-04 12:08:06 -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: Publish to user space last on probe 2018-07-23 17:04:14 -05:00
pciehp_ctrl.c PCI: pciehp: Track enable/disable status 2018-07-23 17:04:14 -05:00
pciehp_hpc.c PCI: pciehp: Track enable/disable status 2018-07-23 17:04:14 -05:00
pciehp_pci.c PCI: pciehp: Declare pciehp_unconfigure_device() void 2018-07-23 17:04:11 -05:00
pciehp.h PCI: pciehp: Track enable/disable status 2018-07-23 17:04:14 -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: shpchp: Fix AMD POGO identification 2018-06-04 12:07:31 -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