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From:   Igor Mammedov <imammedo@redhat.com>
To:     linux-kernel@vger.kernel.org
Cc:     terraluna977@gmail.com, bhelgaas@google.com,
        linux-pci@vger.kernel.org, imammedo@redhat.com, mst@redhat.com
Subject: [RFC 0/3] acpipcihp: fix kernel crash on 2nd resume
Date:   Tue, 25 Jul 2023 13:39:35 +0200
Message-Id: <20230725113938.2277420-1-imammedo@redhat.com>
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Changelog:
  * split out debug patch into a separate one with extra printk added
  * fixed inverte bus->self check (probably a reason why it didn't work before)


1/3 debug patch
2/3 offending patch
3/3 potential fix
  
I added more files to trace, add following to kernel CLI
   dyndbg="file drivers/pci/access.c +p; file drivers/pci/hotplug/acpiphp_glue.c +p; file drivers/pci/bus.c +p; file drivers/pci/pci.c +p; file drivers/pci/setup-bus.c +p; file drivers/acpi/bus.c +p" ignore_loglevel

should be applied on top of 
   e8afd0d9fccc PCI: pciehp: Cancel bringup sequence if card is not present

apply a patch one by one and run testcase + capture dmesg after each patch
one shpould endup with 3 dmesg to ananlyse
 1st - old behaviour - no crash
 2nd - crash
 3rd - no crash hopefully

Igor Mammedov (3):
  acpiphp: extra debug hack
  PCI: acpiphp: Reassign resources on bridge if necessary
  acpipcihp: use __pci_bus_assign_resources() if bus doesn't have bridge

 drivers/pci/hotplug/acpiphp_glue.c | 23 ++++++++++++++++++-----
 1 file changed, 18 insertions(+), 5 deletions(-)

-- 
2.39.3