From 062fb7f816439da6bf3860386889343482a66bd4 Mon Sep 17 00:00:00 2001 From: Tim Harvey Date: Mon, 20 Jul 2026 14:57:18 -0700 Subject: [PATCH] PCI: Add ACS quirk for Pericom PI7C9X2G608 switches [12d8:2608] The Pericom PI7C9X2G608 6-port Gen2 PCIe switch is also affected by the PI7C9X2G errata per the errata document: E2: ACS P2P Request Redirect Is Not Functional Apply the same quirk to this PCI ID as well to apply the workaround required if using ACS. Fixes: acd61ffb2f16 ("PCI: Add ACS quirk for Pericom PI7C9X2G switches") Signed-off-by: Tim Harvey Signed-off-by: Bjorn Helgaas Cc: stable@vger.kernel.org Link: https://patch.msgid.link/20260720215718.2139510-1-tharvey@gateworks.com --- drivers/pci/quirks.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c index b09f27f7846f..27f7d56c9ac3 100644 --- a/drivers/pci/quirks.c +++ b/drivers/pci/quirks.c @@ -6263,6 +6263,10 @@ DECLARE_PCI_FIXUP_ENABLE(PCI_VENDOR_ID_PERICOM, 0xb404, pci_fixup_pericom_acs_store_forward); DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_PERICOM, 0xb404, pci_fixup_pericom_acs_store_forward); +DECLARE_PCI_FIXUP_ENABLE(PCI_VENDOR_ID_PERICOM, 0x2608, + pci_fixup_pericom_acs_store_forward); +DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_PERICOM, 0x2608, + pci_fixup_pericom_acs_store_forward); static void nvidia_ion_ahci_fixup(struct pci_dev *pdev) {