Re: [PATCH] of/fdt: Make fdt blob input parameters of unflatten functions const
From: Rob Herring
Date: Fri May 29 2015 - 11:00:36 EST
On Wed, May 13, 2015 at 9:33 AM, Geert Uytterhoeven
<geert+renesas@xxxxxxxxx> wrote:
> Operations to unflatten fdt blobs never modify the input blobs, hence
> make them const. Now we no longer need to cast arbitrary const data to
> "void *" when calling of_fdt_unflatten_tree().
>
> Signed-off-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx>
Applied, thanks.
Rob
> ---
> drivers/of/fdt.c | 6 +++---
> include/linux/of_fdt.h | 2 +-
> 2 files changed, 4 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/of/fdt.c b/drivers/of/fdt.c
> index caa6bc447165636f..5e83687c090f7ee2 100644
> --- a/drivers/of/fdt.c
> +++ b/drivers/of/fdt.c
> @@ -168,7 +168,7 @@ static void *unflatten_dt_alloc(void **mem, unsigned long size,
> * @dad: Parent struct device_node
> * @fpsize: Size of the node path up at the current depth.
> */
> -static void * unflatten_dt_node(void *blob,
> +static void * unflatten_dt_node(const void *blob,
> void *mem,
> int *poffset,
> struct device_node *dad,
> @@ -378,7 +378,7 @@ static void * unflatten_dt_node(void *blob,
> * @dt_alloc: An allocator that provides a virtual address to memory
> * for the resulting tree
> */
> -static void __unflatten_device_tree(void *blob,
> +static void __unflatten_device_tree(const void *blob,
> struct device_node **mynodes,
> void * (*dt_alloc)(u64 size, u64 align))
> {
> @@ -441,7 +441,7 @@ static void *kernel_tree_alloc(u64 size, u64 align)
> * pointers of the nodes so the normal device-tree walking functions
> * can be used.
> */
> -void of_fdt_unflatten_tree(unsigned long *blob,
> +void of_fdt_unflatten_tree(const unsigned long *blob,
> struct device_node **mynodes)
> {
> __unflatten_device_tree(blob, mynodes, &kernel_tree_alloc);
> diff --git a/include/linux/of_fdt.h b/include/linux/of_fdt.h
> index 587ee507965d78a1..0cf217d404ce4660 100644
> --- a/include/linux/of_fdt.h
> +++ b/include/linux/of_fdt.h
> @@ -37,7 +37,7 @@ extern bool of_fdt_is_big_endian(const void *blob,
> unsigned long node);
> extern int of_fdt_match(const void *blob, unsigned long node,
> const char *const *compat);
> -extern void of_fdt_unflatten_tree(unsigned long *blob,
> +extern void of_fdt_unflatten_tree(const unsigned long *blob,
> struct device_node **mynodes);
>
> /* TBD: Temporary export of fdt globals - remove when code fully merged */
> --
> 1.9.1
>
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