From: Damien Le Moal dlemoal@kernel.org
commit 7e6689b34a815bd379dfdbe9855d36f395ef056c upstream.
The address translation unit of the rockchip EP controller does not use the lower 8 bits of a PCIe-space address to map local memory. Thus we must set the align feature field to 256 to let the user know about this constraint.
Link: https://lore.kernel.org/r/20230418074700.1083505-12-rick.wertenbroek@gmail.c... Fixes: cf590b078391 ("PCI: rockchip: Add EP driver for Rockchip PCIe controller") Signed-off-by: Damien Le Moal dlemoal@kernel.org Signed-off-by: Rick Wertenbroek rick.wertenbroek@gmail.com Signed-off-by: Lorenzo Pieralisi lpieralisi@kernel.org Cc: stable@vger.kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/pci/controller/pcie-rockchip-ep.c | 1 + 1 file changed, 1 insertion(+)
--- a/drivers/pci/controller/pcie-rockchip-ep.c +++ b/drivers/pci/controller/pcie-rockchip-ep.c @@ -484,6 +484,7 @@ static const struct pci_epc_features roc .linkup_notifier = false, .msi_capable = true, .msix_capable = false, + .align = 256, };
static const struct pci_epc_features*