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Message-Id: <20250826170315.721551-1-18255117159@163.com> Date: Wed, 27 Aug 2025 01:03:07 +0800 From: Hans Zhang <18255117159@....com> To: bhelgaas@...gle.com, helgaas@...nel.org, linux-pci@...r.kernel.org, linux-kernel@...r.kernel.org Cc: Hans Zhang <18255117159@....com> Subject: [PATCH v3 0/8] PCI: Replace short msleep() calls with more precise delay functions This series improves code readability and maintainability in the PCI subsystem by replacing hard-coded delay values with descriptive macros. The changes include: - Adding macros for various delay values used in PCI operations - Replacing msleep(2) with fsleep(2000) for precise secondary bus reset - Keeping the same delay values but using macros for better documentation These changes make the code easier to understand and maintain, while ensuring that the timing requirements specified in the PCIe r7.0 specification are met. --- Changes for v3: https://patchwork.kernel.org/project/linux-pci/cover/20250822155908.625553-1-18255117159@163.com/ - According to Bjorn's suggestion, split the first patch of v2 and add macro definitions to the remaining patches. Changes for v2: https://patchwork.kernel.org/project/linux-pci/patch/20250820160944.489061-1-18255117159@163.com/ - According to the Maintainer's suggestion, it was modified to fsleep, usleep_range, and macro definitions were used instead of hard code. (Bjorn) --- Hans Zhang (8): PCI: Add macro for secondary bus reset delay PCI: Replace msleep with fsleep for precise secondary bus reset PCI: Add macro for link status check delay PCI: rcar-host: Add macro for speed change monitoring delay PCI: brcmstb: Add macro for link up check delay PCI: rcar: Add macro for PHY ready check delay PCI: pciehp: Add macros for hotplug operation delays PCI/DPC: Add macro for RP busy check delay drivers/pci/controller/pcie-brcmstb.c | 4 +++- drivers/pci/controller/pcie-rcar-host.c | 4 +++- drivers/pci/controller/pcie-rcar.c | 4 +++- drivers/pci/hotplug/pciehp_hpc.c | 7 +++++-- drivers/pci/pci.c | 11 +++++------ drivers/pci/pci.h | 3 +++ drivers/pci/pcie/dpc.c | 4 +++- 7 files changed, 25 insertions(+), 12 deletions(-) base-commit: fab1beda7597fac1cecc01707d55eadb6bbe773c -- 2.25.1
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