These bridges, present on Vortex86DX3 and Vortex86EX2 SoCs, do not support MSIs. If enabled, interrupts generated by PCI-E devices never reach the processor. I have contacted the manufacturer (DM&P) and they confirmed that PCI MSIs need to be disabled for them. Signed-off-by: Marcos Del Sol Vives <marcos@xxxxxxxx> --- drivers/pci/quirks.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c index d7f4ee634263..f610ea45ca9e 100644 --- a/drivers/pci/quirks.c +++ b/drivers/pci/quirks.c @@ -2715,6 +2715,7 @@ static void quirk_disable_msi(struct pci_dev *dev) DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8131_BRIDGE, quirk_disable_msi); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, 0xa238, quirk_disable_msi); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x5a3f, quirk_disable_msi); +DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_RDC, 0x1031, quirk_disable_msi); /* * The APC bridge device in AMD 780 family northbridges has some random -- 2.34.1
