Merge branch 'pci/pm'

- Avoid D3 for Root Ports on TUXEDO Sirius Gen1 with old BIOS because the
  system can't wake up from suspend (Werner Sembach)

* pci/pm:
  PCI: Avoid putting some root ports into D3 on TUXEDO Sirius Gen1

1 files changed, 30 insertions, 0 deletions

diff --git a/arch/x86/pci/fixup.c b/arch/x86/pci/fixup.c
index 0681ecfe3430..f348a3179b2d 100644
--- a/arch/x86/pci/fixup.c
+++ b/arch/x86/pci/fixup.c
@@ -1010,4 +1010,34 @@ DECLARE_PCI_FIXUP_SUSPEND(PCI_VENDOR_ID_AMD, 0x1668, amd_rp_pme_suspend);
 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_AMD, 0x1668, amd_rp_pme_resume);
 DECLARE_PCI_FIXUP_SUSPEND(PCI_VENDOR_ID_AMD, 0x1669, amd_rp_pme_suspend);
 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_AMD, 0x1669, amd_rp_pme_resume);
+
+/*
+ * Putting PCIe root ports on Ryzen SoCs with USB4 controllers into D3hot
+ * may cause problems when the system attempts wake up from s2idle.
+ *
+ * On the TUXEDO Sirius 16 Gen 1 with a specific old BIOS this manifests as
+ * a system hang.
+ */
+static const struct dmi_system_id quirk_tuxeo_rp_d3_dmi_table[] = {
+	{
+		.matches = {
+			DMI_EXACT_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
+			DMI_EXACT_MATCH(DMI_BOARD_NAME, "APX958"),
+			DMI_EXACT_MATCH(DMI_BIOS_VERSION, "V1.00A00_20240108"),
+		},
+	},
+	{}
+};
+
+static void quirk_tuxeo_rp_d3(struct pci_dev *pdev)
+{
+	struct pci_dev *root_pdev;
+
+	if (dmi_check_system(quirk_tuxeo_rp_d3_dmi_table)) {
+		root_pdev = pcie_find_root_port(pdev);
+		if (root_pdev)
+			root_pdev->dev_flags |= PCI_DEV_FLAGS_NO_D3;
+	}
+}
+DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, 0x1502, quirk_tuxeo_rp_d3);
 #endif /* CONFIG_SUSPEND */