The FDT pointer, i.e. initial_boot_params, shouldn't be changed after init. It's only set by boot code and then the only user of the FDT is the raw sysfs reading API. Mark this pointer with __ro_after_init so that the pointer can't be changed after init. Cc: Hsin-Yi Wang <hsinyi@xxxxxxxxxxxx> Signed-off-by: Stephen Boyd <swboyd@xxxxxxxxxxxx> --- drivers/of/fdt.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/of/fdt.c b/drivers/of/fdt.c index 93414b89735f..f131a1b8588b 100644 --- a/drivers/of/fdt.c +++ b/drivers/of/fdt.c @@ -516,7 +516,7 @@ EXPORT_SYMBOL_GPL(of_fdt_unflatten_tree); int __initdata dt_root_addr_cells; int __initdata dt_root_size_cells; -void *initial_boot_params; +void *initial_boot_params __ro_after_init; #ifdef CONFIG_OF_EARLY_FLATTREE -- Sent by a computer through tubes
