linux-kernel - [PATCH v4 0/2] PCI: Introduce pci_clear/set_config

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Message-Id: <20250818161431.372590-1-18255117159@163.com>
Date: Tue, 19 Aug 2025 00:14:29 +0800
From: Hans Zhang <18255117159@....com>
To: mahesh@...ux.ibm.com,
	bhelgaas@...gle.com
Cc: oohall@...il.com,
	mani@...nel.org,
	lukas@...ner.de,
	linuxppc-dev@...ts.ozlabs.org,
	linux-pci@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Hans Zhang <18255117159@....com>
Subject: [PATCH v4 0/2] PCI: Introduce pci_clear/set_config_dword()

This series introduces auxiliary functions for the PCI configuration space
and simplifies the read and write operations of the AER driver, reducing a
lot of repetitive code.

Patch 1 adds pci_clear_config_dword() and pci_set_config_dword() helpers
to reduce repetitive read-modify-write sequences when modifying PCI config
space. These helpers improve code readability and maintainability.

Patch 2 refactors the PCIe AER driver to use these new helpers,
eliminating manual read-modify-write patterns and intermediate variable
in several functions. This results in cleaner and more concise code.

---
Changes for v4:
- Introduce pci_clear/set_config_dword()

Changes for v3:
https://patchwork.kernel.org/project/linux-pci/patch/20250816161743.340684-1-18255117159@163.com/

- Rebase to v6.17-rc1.
- The patch commit message were modified.
- Add Acked-by: Manivannan Sadhasivam <mani@...nel.org>

Changes for v2:
- The patch commit message were modified.
- New optimizations for the functions disable_ecrc_checking, aer_enable_irq, and aer_disable_irq have been added.
---

Hans Zhang (2):
  PCI: Introduce pci_clear/set_config_dword()
  PCI/AER: Use pci_clear/set_config_dword to simplify code

 drivers/pci/pcie/aer.c | 29 ++++++++++-------------------
 include/linux/pci.h    | 12 ++++++++++++
 2 files changed, 22 insertions(+), 19 deletions(-)

base-commit: 8742b2d8935f476449ef37e263bc4da3295c7b58
-- 
2.25.1