Hello Andrej,
On 15.03.22 14:39, Andrej Picej wrote:
> Function first goes through all the aliases which have the given stem.
> It then ensures that all the devices hiding under these aliases are
> probed.
>
> Signed-off-by: Andrej Picej <andrej.picej@xxxxxxxxx>
> ---
> drivers/of/base.c | 28 ++++++++++++++++++++++++++++
> include/of.h | 6 ++++++
> 2 files changed, 34 insertions(+)
>
> diff --git a/drivers/of/base.c b/drivers/of/base.c
> index 80465d6d50..055dba97ab 100644
> --- a/drivers/of/base.c
> +++ b/drivers/of/base.c
> @@ -274,6 +274,34 @@ int of_alias_get_id_from(struct device_node *root, struct device_node *np,
> }
> EXPORT_SYMBOL_GPL(of_alias_get_id_from);
>
> +/**
> + * of_device_ensured_probed_by_alias_stem - Ensure all devices with alias base name
> + * are probed
> + * @stem: Alias stem of the given device_node
> + *
> + * The function ensures all devices with the given alias stem are probed.
> + *
> + * Returns 0 on success or error code.
> + */
> +int of_device_ensured_probed_by_alias_stem(const char *stem)
> +{
> + struct alias_prop *app;
> + int id = -ENODEV;
> + int ret;
Can you early exit here if (!deep_probe_is_supported())?
This saves non-deep probe users the hassle of needless iteration
and string comparisons.
> +
> + list_for_each_entry(app, &aliases_lookup, link) {
> + if (of_node_cmp(app->stem, stem) != 0)
> + continue;
> +
> + ret = of_device_ensure_probed(app->np);
> + if (ret)
> + return ret;
> + }
> +
> + return 0;
> +}
> +EXPORT_SYMBOL_GPL(of_device_ensured_probed_by_alias_stem);
> +
> const char *of_alias_get(struct device_node *np)
> {
> struct alias_prop *app;
> diff --git a/include/of.h b/include/of.h
> index 216d0ee763..95817c58a4 100644
> --- a/include/of.h
> +++ b/include/of.h
> @@ -261,6 +261,7 @@ extern void of_alias_scan(void);
> extern int of_alias_get_id(struct device_node *np, const char *stem);
> extern int of_alias_get_id_from(struct device_node *root, struct device_node *np,
> const char *stem);
> +extern int of_device_ensured_probed_by_alias_stem(const char *stem);
> extern const char *of_alias_get(struct device_node *np);
> extern int of_modalias_node(struct device_node *node, char *modalias, int len);
>
> @@ -750,6 +751,11 @@ static inline int of_alias_get_id_from(struct device_node *root, struct device_n
> return -ENOSYS;
> }
>
> +static int of_device_ensured_probed_by_aliases(const char *stem)
> +{
> + return -ENOSYS;
> +}
> +
> static inline const char *of_alias_get(struct device_node *np)
> {
> return NULL;
--
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