linux_dsm_epyc7002/drivers/pci/hotplug
Rafael J. Wysocki dd7fd3a82c ACPI / hotplug / PCI: Runtime resume bridges before bus rescans
If a PCI bridge (or PCIe port) that is runtime-suspended gets an ACPI
hotplug notification, such as a bus check, it has to be resumed before
re-scanning the devices below it, or those devices will not be
accessible and will be treated as hot-removed.

Make that happen and let the bridge suspend again after the bus below it
has been re-scanned.

This is a replacement for commit 16468c783c ("ACPI / hotplug / PCI:
Runtime resume bridge before rescan") that has been reverted, because it
introduced a system resume regression (due to missing bridge->pci_dev
checks that are necessary in case the notification is targeted at the
host bridge) and it is necessary for the code added by commit
006d44e49a ("PCI: Add runtime PM support for PCIe ports") to work as
expected.

Tested-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-08-04 21:33:58 -04:00
..
acpi_pcihp.c
acpiphp_core.c
acpiphp_glue.c
acpiphp_ibm.c
acpiphp.h
cpci_hotplug_core.c
cpci_hotplug_pci.c
cpci_hotplug.h
cpcihp_generic.c
cpcihp_zt5550.c
cpcihp_zt5550.h
cpqphp_core.c
cpqphp_ctrl.c
cpqphp_nvram.c
cpqphp_nvram.h
cpqphp_pci.c
cpqphp_sysfs.c
cpqphp.h
ibmphp_core.c
ibmphp_ebda.c
ibmphp_hpc.c
ibmphp_pci.c
ibmphp_res.c
ibmphp.h
Kconfig
Makefile
pci_hotplug_core.c
pciehp_core.c
pciehp_ctrl.c
pciehp_hpc.c
pciehp_pci.c
pciehp.h
pcihp_skeleton.c
pnv_php.c
rpadlpar_core.c
rpadlpar_sysfs.c
rpadlpar.h
rpaphp_core.c
rpaphp_pci.c
rpaphp_slot.c
rpaphp.h
s390_pci_hpc.c
sgi_hotplug.c
shpchp_core.c
shpchp_ctrl.c
shpchp_hpc.c
shpchp_pci.c
shpchp_sysfs.c
shpchp.h