[PATCH 0/4] PCI: Fix procfs PCI config access issues

[Ziming Du]

Hi,

As suggested by Bjorn, this series aligns the implementation of procfs with
the sysfs counterpart and fixes procfs PCI configuration access issues.

The first two patches refactor proc_bus_pci_{write,read}() to align
with pci_write_config() and pci_read_config() respectively:
  - Rename variables (pos->off, cnt->count/size) for consistency
  - Remove rebundant bounds check

The last two patches fix potential overflow issues:
  - Prevent overflow when offset exceeds reasonable range
  - Fix implicit 64-bit to 32-bit truncation in read path

Link: https://lore.kernel.org/all/20260303193253.GA3817951@bhelgaas/

Ziming Du (4):
  PCI: Align proc_bus_pci_write() with pci_write_config()
  PCI: Align proc_bus_pci_read() with pci_read_config()
  PCI: Prevent overflow in proc_bus_pci_write()
  PCI: Prevent overflow in proc_bus_pci_read()

 drivers/pci/proc.c | 115 ++++++++++++++++++++++-----------------------
 1 file changed, 57 insertions(+), 58 deletions(-)

-- 
2.43.0