[PATCHv2 0/4] pci: slot handling fixes

[Keith Busch <kbusch@meta.com>]

From: Keith Busch <kbusch@kernel.org>

This series fixes some older issues are the slot lock usage, with two
follow on patches to address multi-function resets in pcie hotplug
slots.

Previous discussions:

  https://lore.kernel.org/linux-pci/20260116184150.3013258-1-kbusch@meta.com/

  https://lore.kernel.org/linux-pci/aXvOOjZQ_EmZDgVs@kbusch-mbp/T/#t

Version change notes:

 * The first patch is unchanged from the original.

 * The second patch adds the local "bridge" to improve code clarity
   (review comments from Dan)

 * The third patch removes pci_slot_resettable in addition to all the
   other slot specific locking and state saving functions. I also
   updated a code comment explaining that all bus devices are saved and
   restored with the slot reset.

 * Included a fourth patch that fixes user suborindate bus resets when the
   bridge is pcie hotplug capable; a previous version came from this
   independent patch here:

  https://lore.kernel.org/linux-pci/20260116154244.1452246-1-kbusch@meta.com/

   And I'm including it in this series since it is all in the same area
   with slot resets. I've made a minor change to the previous version to
   remove the code duplication with pci_bus_error_reset().

Jinhui Guo (1):
  PCI: Fix incorrect unlocking in pci_slot_trylock()

Keith Busch (3):
  pci: fix slot reset device locking
  pci: remove slot specific lock/unlock and save/restore
  pci: make reset_subordinate hotplug safe

 drivers/pci/pci-sysfs.c |   3 +-
 drivers/pci/pci.c       | 213 +++++++++++-----------------------------
 drivers/pci/pci.h       |   2 +-
 3 files changed, 61 insertions(+), 157 deletions(-)

-- 
2.47.3