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of/fdt: avoid re-parsing '#{address,size}-cells' in of_fdt_limit_memory

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Now that we initialize dt_root_addr_cells and dt_root_size_cells earlier,
use them and simplify of_fdt_limit_memory.

Link: https://lore.kernel.org/all/20180830190523.31474-3-robh@kernel.org/
Signed-off-by: Rob Herring <robh@kernel.org>
This commit is contained in:
Rob Herring 2018-08-30 11:20:20 -05:00 committed by Rob Herring (Arm)
parent 554b662336
commit 596c29f3c8
1 changed files with 1 additions and 22 deletions
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23
drivers/of/fdt.c
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@ -52,28 +52,7 @@ void __init of_fdt_limit_memory(int limit)
int memory;
int len;
const void *val;
int nr_address_cells = OF_ROOT_NODE_ADDR_CELLS_DEFAULT;
int nr_size_cells = OF_ROOT_NODE_SIZE_CELLS_DEFAULT;
const __be32 *addr_prop;
const __be32 *size_prop;
int root_offset;
int cell_size;
root_offset = fdt_path_offset(initial_boot_params, "/");
if (root_offset < 0)
return;
addr_prop = fdt_getprop(initial_boot_params, root_offset,
"#address-cells", NULL);
if (addr_prop)
nr_address_cells = fdt32_to_cpu(*addr_prop);
size_prop = fdt_getprop(initial_boot_params, root_offset,
"#size-cells", NULL);
if (size_prop)
nr_size_cells = fdt32_to_cpu(*size_prop);
cell_size = sizeof(uint32_t)*(nr_address_cells + nr_size_cells);
int cell_size = sizeof(uint32_t)*(dt_root_addr_cells + dt_root_size_cells);
memory = fdt_path_offset(initial_boot_params, "/memory");
if (memory > 0) {