powerpc/fsl_rio: Use of_iomap()

Replace of_address_to_resource()+ioremap() with a call to of_iomap()
which does both of those steps.

Signed-off-by: Rob Herring <robh@kernel.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/20230327223103.820229-1-robh@kernel.org

diff --git a/arch/powerpc/sysdev/fsl_rio.c b/arch/powerpc/sysdev/fsl_rio.c
index c8f044d..f8e492e 100644 (file)
--- a/arch/powerpc/sysdev/fsl_rio.c
+++ b/arch/powerpc/sysdev/fsl_rio.c
@@ -450,7 +450,6 @@ int fsl_rio_setup(struct platform_device *dev)
        int rc = 0;
        const u32 *dt_range, *cell, *port_index;
        u32 active_ports = 0;
-       struct resource regs, rmu_regs;
        struct device_node *np, *rmu_node;
        int rlen;
        u32 ccsr;
@@ -465,17 +464,7 @@ int fsl_rio_setup(struct platform_device *dev)
                return -ENODEV;
        }
 
-       rc = of_address_to_resource(dev->dev.of_node, 0, &regs);
-       if (rc) {
-               dev_err(&dev->dev, "Can't get %pOF property 'reg'\n",
-                               dev->dev.of_node);
-               return -EFAULT;
-       }
-       dev_info(&dev->dev, "Of-device full name %pOF\n",
-                       dev->dev.of_node);
-       dev_info(&dev->dev, "Regs: %pR\n", &regs);
-
-       rio_regs_win = ioremap(regs.start, resource_size(&regs));
+       rio_regs_win = of_iomap(dev->dev.of_node, 0);
        if (!rio_regs_win) {
                dev_err(&dev->dev, "Unable to map rio register window\n");
                rc = -ENOMEM;
@@ -509,15 +498,9 @@ int fsl_rio_setup(struct platform_device *dev)
                rc = -ENOENT;
                goto err_rmu;
        }
-       rc = of_address_to_resource(rmu_node, 0, &rmu_regs);
-       if (rc) {
-               dev_err(&dev->dev, "Can't get %pOF property 'reg'\n",
-                               rmu_node);
-               of_node_put(rmu_node);
-               goto err_rmu;
-       }
+       rmu_regs_win = of_iomap(rmu_node, 0);
+
        of_node_put(rmu_node);
-       rmu_regs_win = ioremap(rmu_regs.start, resource_size(&rmu_regs));
        if (!rmu_regs_win) {
                dev_err(&dev->dev, "Unable to map rmu register window\n");
                rc = -ENOMEM;