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PCI: mediatek-gen3: Do full device power down on removal

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When power control for downstream devices was introduced in the
mediatek-gen3 PCIe controller driver, only the power to the downstream
devices was cut when the controller driver is removed. This matched
existing behavior, but in hindsight a proper power down sequence should
have been followed.

Call mtk_pcie_devices_power_down() on driver removal so that in addition
to removing power from the downstream devices, PERST# is asserted.

Fixes: 1a152e2194 ("PCI: mediatek-gen3: Integrate new pwrctrl API")
Signed-off-by: Chen-Yu Tsai <wenst@chromium.org>
Signed-off-by: Manivannan Sadhasivam <mani@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Link: https://patch.msgid.link/20260505105918.1823170-1-wenst@chromium.org
This commit is contained in:
Chen-Yu Tsai 2026-05-05 18:59:16 +08:00 committed by Bjorn Helgaas
parent 7a0e17e7a0
commit d39d55d741
1 changed files with 1 additions and 1 deletions
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2
drivers/pci/controller/pcie-mediatek-gen3.c
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@ -1280,7 +1280,7 @@ static void mtk_pcie_remove(struct platform_device *pdev)
pci_remove_root_bus(host->bus);
pci_unlock_rescan_remove();
pci_pwrctrl_power_off_devices(pcie->dev);
mtk_pcie_devices_power_down(pcie);
mtk_pcie_power_down(pcie);
pci_pwrctrl_destroy_devices(pcie->dev);
mtk_pcie_irq_teardown(pcie);