[PATCH v2 3/3] of/fdt: Mark initial_boot_params as __ro_after_init

From: Stephen Boyd
Date: Tue May 14 2019 - 16:42:43 EST

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;


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