From: Hou Zhiqiang <[email protected]> Avoid to issue CFG transactions to link partner when the PCIe link is not up.
Signed-off-by: Hou Zhiqiang <[email protected]> --- V5: - Corrected the subject. drivers/pci/controller/pcie-mobiveil.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/pci/controller/pcie-mobiveil.c b/drivers/pci/controller/pcie-mobiveil.c index 621852078caf..1ee3ea2570c0 100644 --- a/drivers/pci/controller/pcie-mobiveil.c +++ b/drivers/pci/controller/pcie-mobiveil.c @@ -283,6 +283,10 @@ static bool mobiveil_pcie_valid_device(struct pci_bus *bus, unsigned int devfn) { struct mobiveil_pcie *pcie = bus->sysdata; + /* If there is no link, then there is no device */ + if (bus->number > pcie->root_bus_nr && !mobiveil_pcie_link_up(pcie)) + return false; + /* Only one device down on each root port */ if ((bus->number == pcie->root_bus_nr) && (devfn > 0)) return false; -- 2.17.1
