arc: use early_init_dt_scan

Convert arc to use new early_init_dt_scan function.

Signed-off-by: Rob Herring <rob.herring@calxeda.com>
Acked-by: Vineet Gupta <vgupta@synopsys.com>

1 files changed, 1 insertions, 13 deletions

diff --git a/arch/arc/kernel/devtree.c b/arch/arc/kernel/devtree.c
index eeb613aa44ff..1ab6f3569f60 100644
--- a/arch/arc/kernel/devtree.c
+++ b/arch/arc/kernel/devtree.c
@@ -27,7 +27,6 @@
  */
 struct machine_desc * __init setup_machine_fdt(void *dt)
 {
-        struct boot_param_header *devtree = dt;
         struct machine_desc *mdesc = NULL, *mdesc_best = NULL;
         unsigned int score, mdesc_score = ~1;
         unsigned long dt_root;
@@ -36,11 +35,9 @@ struct machine_desc * __init setup_machine_fdt(void *dt)
         char manufacturer[16];
         unsigned long len;
 
-        /* check device tree validity */
-        if (be32_to_cpu(devtree->magic) != OF_DT_HEADER)
+        if (!early_init_dt_scan(dt))
                 return NULL;
 
-        initial_boot_params = devtree;
         dt_root = of_get_flat_dt_root();
 
         /*
@@ -85,15 +82,6 @@ struct machine_desc * __init setup_machine_fdt(void *dt)
 
         pr_info("Board \"%s\" from %s (Manufacturer)\n", model, manufacturer);
 
-        /* Retrieve various information from the /chosen node */
-        of_scan_flat_dt(early_init_dt_scan_chosen, boot_command_line);
-
-        /* Initialize {size,address}-cells info */
-        of_scan_flat_dt(early_init_dt_scan_root, NULL);
-
-        /* Setup memory, calling early_init_dt_add_memory_arch */
-        of_scan_flat_dt(early_init_dt_scan_memory, NULL);
-
         clk = of_get_flat_dt_prop(dt_root, "clock-frequency", &len);
         if (clk)
                 arc_set_core_freq(of_read_ulong(clk, len/4));