Altera PCIe IP can be configured as rootport or device and they might have same vendor ID. It will cause the system hang issue if Altera PCIe is in endpoint mode and work with other PCIe rootport that from other vendors. So, add the rootport mode checking in link retrain fixup function. Signed-off-by: Ley Foon Tan <lftan@xxxxxxxxxx> --- drivers/pci/host/pcie-altera.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/pci/host/pcie-altera.c b/drivers/pci/host/pcie-altera.c index 58eef99..6477738 100644 --- a/drivers/pci/host/pcie-altera.c +++ b/drivers/pci/host/pcie-altera.c @@ -139,6 +139,9 @@ static void altera_pcie_retrain(struct pci_dev *dev) u16 linkcap, linkstat; struct altera_pcie *pcie = dev->bus->sysdata; + if (!pci_is_root_bus(dev->bus)) + return; + if (!altera_pcie_link_is_up(pcie)) return; -- 1.8.2.1 -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
