On Thu 28 Nov 05:34 PST 2019, Georgi Djakov wrote:
> The removal of all nodes from a provider seem to be a common functionality
> for all existing users and it would make sense to factor out this into a
> a common helper function.
>
> Suggested-by: Dmitry Osipenko <digetx@xxxxxxxxx>
> Signed-off-by: Georgi Djakov <georgi.djakov@xxxxxxxxxx>
Reviewed-by: Bjorn Andersson <bjorn.andersson@xxxxxxxxxx>
> ---
> drivers/interconnect/core.c | 22 ++++++++++++++++++++++
> include/linux/interconnect-provider.h | 6 ++++++
> 2 files changed, 28 insertions(+)
>
> diff --git a/drivers/interconnect/core.c b/drivers/interconnect/core.c
> index 467c539310f3..0e4852feb395 100644
> --- a/drivers/interconnect/core.c
> +++ b/drivers/interconnect/core.c
> @@ -735,6 +735,28 @@ void icc_node_del(struct icc_node *node)
> }
> EXPORT_SYMBOL_GPL(icc_node_del);
>
> +/**
> + * icc_nodes_remove() - remove all previously added nodes from provider
> + * @provider: the interconnect provider we are removing nodes from
> + *
> + * Return: 0 on success, or an error code otherwise
> + */
> +int icc_nodes_remove(struct icc_provider *provider)
> +{
> + struct icc_node *n, *tmp;
> +
> + if (WARN_ON(IS_ERR_OR_NULL(provider)))
> + return -EINVAL;
> +
> + list_for_each_entry_safe_reverse(n, tmp, &provider->nodes, node_list) {
> + icc_node_del(n);
> + icc_node_destroy(n->id);
> + }
> +
> + return 0;
> +}
> +EXPORT_SYMBOL_GPL(icc_nodes_remove);
> +
> /**
> * icc_provider_add() - add a new interconnect provider
> * @provider: the interconnect provider that will be added into topology
> diff --git a/include/linux/interconnect-provider.h b/include/linux/interconnect-provider.h
> index b16f9effa555..31440c921216 100644
> --- a/include/linux/interconnect-provider.h
> +++ b/include/linux/interconnect-provider.h
> @@ -98,6 +98,7 @@ int icc_link_create(struct icc_node *node, const int dst_id);
> int icc_link_destroy(struct icc_node *src, struct icc_node *dst);
> void icc_node_add(struct icc_node *node, struct icc_provider *provider);
> void icc_node_del(struct icc_node *node);
> +int icc_nodes_remove(struct icc_provider *provider);
> int icc_provider_add(struct icc_provider *provider);
> int icc_provider_del(struct icc_provider *provider);
>
> @@ -130,6 +131,11 @@ void icc_node_del(struct icc_node *node)
> {
> }
>
> +static inline int icc_nodes_remove(struct icc_provider *provider)
> +{
> + return -ENOTSUPP;
> +}
> +
> static inline int icc_provider_add(struct icc_provider *provider)
> {
> return -ENOTSUPP;
