diff mbox series

[4/5] interconnect: Add a common helper for removing all nodes

Message ID 20191128133435.25667-4-georgi.djakov@linaro.org (mailing list archive)
State Not Applicable, archived
Headers show
Series [1/5] interconnect: qcom: sdm845: Walk the list safely on node removal | expand

Commit Message

Georgi Djakov Nov. 28, 2019, 1:34 p.m. UTC 
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@gmail.com>
Signed-off-by: Georgi Djakov <georgi.djakov@linaro.org>
---
 drivers/interconnect/core.c           | 22 ++++++++++++++++++++++
 include/linux/interconnect-provider.h |  6 ++++++
 2 files changed, 28 insertions(+)

Comments

Bjorn Andersson Nov. 28, 2019, 6:20 p.m. UTC | #1 
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@gmail.com>
> Signed-off-by: Georgi Djakov <georgi.djakov@linaro.org>

Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>

> ---
>  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;
diff mbox series

Patch

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;