[PATCH 01/16] dm: core: Add helper to compare node names

[Simon Glass]

Hi Kishon,

On Tue, 9 Mar 2021 at 05:27, Kishon Vijay Abraham I <kishon at ti.com> wrote:
>
> Add helper to compare node names.
>
> Signed-off-by: Kishon Vijay Abraham I <kishon at ti.com>
> ---
>  drivers/core/ofnode.c | 13 +++++++++++++
>  include/dm/ofnode.h   |  9 +++++++++
>  2 files changed, 22 insertions(+)
>
> diff --git a/drivers/core/ofnode.c b/drivers/core/ofnode.c
> index fa0bd2a9c4..4e196d680e 100644
> --- a/drivers/core/ofnode.c
> +++ b/drivers/core/ofnode.c
> @@ -18,6 +18,19 @@
>  #include <linux/ioport.h>
>  #include <asm/global_data.h>
>
> +bool ofnode_name_eq(ofnode node, const char *name)
> +{
> +       const char *node_name;
> +       size_t len;
> +
> +       assert(ofnode_valid(node));
> +
> +       node_name = ofnode_get_name(node);
> +       len = strchrnul(node_name, '@') - node_name;
> +
> +       return (strlen(name) == len) && (strncmp(node_name, name, len) == 0);

Can you use !strncmp() instead of == 0 ?

> +}
> +
>  int ofnode_read_u32(ofnode node, const char *propname, u32 *outp)
>  {
>         return ofnode_read_u32_index(node, propname, 0, outp);
> diff --git a/include/dm/ofnode.h b/include/dm/ofnode.h
> index 2c0597c407..86a139276b 100644
> --- a/include/dm/ofnode.h
> +++ b/include/dm/ofnode.h
> @@ -231,6 +231,15 @@ static inline ofnode ofnode_root(void)
>         return node;
>  }
>
> +/**
> + * ofnode_name_eq() - Check if the node name is equivalent to a given name
> + *

How about a comment indicating this ignores the unit address?

> + * @node:      valid node reference that has to be compared
> + * @name:      name that has to be compared with the node name
> + * @return 1 if matches, 0 if it doesn't match
> + */
> +bool ofnode_name_eq(ofnode node, const char *name);
> +
>  /**
>   * ofnode_read_u32() - Read a 32-bit integer from a property
>   *
> --
> 2.17.1
>

Please add a test for this in test/dm

Regards,
SImon