ARM: bcm: Use of_address_to_resource()

Replace open coded parsing of "reg" with of_address_to_resource().

Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20230319163125.224833-1-robh@kernel.org
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>

diff --git a/arch/arm/mach-bcm/bcm_kona_smc.c b/arch/arm/mach-bcm/bcm_kona_smc.c
index 185335843bbd58df9ab1b01088ab621d37190f32..f236e12d7a59c4d7fe529fbad7aaa131b9e1ba70 100644 (file)
--- a/arch/arm/mach-bcm/bcm_kona_smc.c
+++ b/arch/arm/mach-bcm/bcm_kona_smc.c
@@ -31,34 +31,23 @@ static const struct of_device_id bcm_kona_smc_ids[] __initconst = {
 int __init bcm_kona_smc_init(void)
 {
        struct device_node *node;
-       const __be32 *prop_val;
-       u64 prop_size = 0;
-       unsigned long buffer_size;
-       u32 buffer_phys;
+       struct resource res;
+       int ret;
 
        /* Read buffer addr and size from the device tree node */
        node = of_find_matching_node(NULL, bcm_kona_smc_ids);
        if (!node)
                return -ENODEV;
 
-       prop_val = of_get_address(node, 0, &prop_size, NULL);
+       ret = of_address_to_resource(node, 0, &res);
        of_node_put(node);
-       if (!prop_val)
+       if (ret)
                return -EINVAL;
 
-       /* We assume space for four 32-bit arguments */
-       if (prop_size < 4 * sizeof(u32) || prop_size > (u64)ULONG_MAX)
-               return -EINVAL;
-       buffer_size = (unsigned long)prop_size;
-
-       buffer_phys = be32_to_cpup(prop_val);
-       if (!buffer_phys)
-               return -EINVAL;
-
-       bcm_smc_buffer = ioremap(buffer_phys, buffer_size);
+       bcm_smc_buffer = ioremap(res.start, resource_size(&res));
        if (!bcm_smc_buffer)
                return -ENOMEM;
-       bcm_smc_buffer_phys = buffer_phys;
+       bcm_smc_buffer_phys = res.start;
 
        pr_info("Kona Secure API initialized\n");