PCI: dwc: Use pcie_get_link_speed() helper for safe array access

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Replace direct indexing of pcie_link_speed[] with the new helper
pcie_get_link_speed() in all DesignWare core and glue drivers. This
ensures that out-of-range generation numbers do not cause out-of-bounds
accesses when the helper returns PCI_SPEED_UNKNOWN, and prepares for
the removal of the range check in of_pci_get_max_link_speed().

The actual validation of the "max-link-speed" DT property (e.g., fallback
to a safe default and warning) is added in subsequent patches for each
driver that reads the property.

Signed-off-by: Hans Zhang <18255117159@163.com>
Signed-off-by: Manivannan Sadhasivam <mani@kernel.org>
Link: https://patch.msgid.link/20260313165522.123518-3-18255117159@163.com

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Hans Zhang 2026-03-14 00:55:19 +08:00 • committed by Manivannan Sadhasivam

parent 28d20b0d89

commit 0f34f647f1

6 changed files with 9 additions and 9 deletions

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2

drivers/pci/controller/dwc/pcie-designware-host.c

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drivers/pci/controller/dwc/pcie-designware.c

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drivers/pci/controller/dwc/pcie-qcom-common.c

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drivers/pci/controller/dwc/pcie-qcom-ep.c

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drivers/pci/controller/dwc/pcie-qcom.c

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drivers/pci/controller/dwc/pcie-tegra194.c

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