pci: imx: Adjust the return value when imx_pcie_addr_valid() fails

When trying to access non-existent/unsupported PCI devices in
imx_pcie_read_config(), when imx_pcie_addr_valid() fails it returns
error code and fills in the result with 0xffffffff manually. But it
really should return zero to upper layer codes.

Reported-by: Fabio Estevam <fabio.estevam@nxp.com>
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Tested-by: Fabio Estevam <fabio.estevam@nxp.com>

diff --git a/drivers/pci/pcie_imx.c b/drivers/pci/pcie_imx.c
index f1e189e..c14bb0a 100644 (file)
--- a/drivers/pci/pcie_imx.c
+++ b/drivers/pci/pcie_imx.c
@@ -381,7 +381,7 @@ static int imx_pcie_read_config(struct pci_controller *hose, pci_dev_t d,
        ret = imx_pcie_addr_valid(d);
        if (ret) {
                *val = 0xffffffff;
-               return ret;
+               return 0;
        }
 
        va_address = get_bus_address(d, where);