Hi Laurent,
On Wed, Feb 21, 2018 at 12:10 AM, Laurent Pinchart
<laurent.pinchart+renesas@xxxxxxxxxxxxxxxx> wrote:
> From: Pantelis Antoniou <pantelis.antoniou@xxxxxxxxxxxx>
>
> Changesets are very powerful, but the lack of a helper API
> makes using them cumbersome. Introduce a simple copy based
> API that makes things considerably easier.
>
> To wit, adding a property using the raw API.
>
> struct property *prop;
> prop = kzalloc(sizeof(*prop)), GFP_KERNEL);
> prop->name = kstrdup("compatible");
> prop->value = kstrdup("foo,bar");
> prop->length = strlen(prop->value) + 1;
> of_changeset_add_property(ocs, np, prop);
>
> while using the helper API
>
> of_changeset_add_property_string(ocs, np, "compatible",
> "foo,bar");
>
> Signed-off-by: Pantelis Antoniou <pantelis.antoniou@xxxxxxxxxxxx>
> [Fixed memory leak in __of_changeset_add_update_property_copy()]
> Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@xxxxxxxxxxxxxxxx>
You missed one fix I have in my topic/overlays branch
https://git.kernel.org/pub/scm/linux/kernel/git/geert/renesas-drivers.git/commit/?h=topic/overlays&id=150f95b9dec77ce371c229f7ac4d6dd8620bef4a
> --- a/include/linux/of.h
> +++ b/include/linux/of.h
> +/**
> + * of_changeset_add_property_u32 - Create a new u32 property
> + *
> + * @ocs: changeset pointer
> + * @np: device node pointer
> + * @name: name of the property
> + * @val: value in host endian format
> + *
> + * Adds a u32 property to the changeset.
> + *
> + * Returns zero on success, a negative error value otherwise.
> + */
> +static inline int of_changeset_add_property_u32(struct of_changeset *ocs,
> + struct device_node *np, const char *name, u32 val)
> +{
> + val = cpu_to_be32(val);
You must use an intermediate, to avoid complaints from sparse:
__be32 x = cpu_to_be32(val);
> + return __of_changeset_add_update_property_copy(ocs, np, name, &val,
> + sizeof(val), false);
s/val/x/
> +}
> +
> +/**
> + * of_changeset_update_property_u32 - Update u32 property
> + *
> + * @ocs: changeset pointer
> + * @np: device node pointer
> + * @name: name of the property
> + * @val: value in host endian format
> + *
> + * Updates a u32 property to the changeset.
> + *
> + * Returns zero on success, a negative error value otherwise.
> + */
> +static inline int of_changeset_update_property_u32(
> + struct of_changeset *ocs, struct device_node *np,
> + const char *name, u32 val)
> +{
> + val = cpu_to_be32(val);
Oh, a new one.
> + return __of_changeset_add_update_property_copy(ocs, np, name, &val,
> + sizeof(val), true);
> +}
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
