linux-kernel - [PATCH v1 1/1] device property: Constify a few fwnode APIs

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Message-Id: <20230324112720.71315-1-andriy.shevchenko@linux.intel.com>
Date:   Fri, 24 Mar 2023 13:27:20 +0200
From:   Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Sakari Ailus <sakari.ailus@...ux.intel.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-acpi@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     Daniel Scally <djrscally@...il.com>,
        Heikki Krogerus <heikki.krogerus@...ux.intel.com>,
        "Rafael J. Wysocki" <rafael@...nel.org>,
        Russell King <rmk+kernel@...linux.org.uk>
Subject: [PATCH v1 1/1] device property: Constify a few fwnode APIs

The fwnode parameter is not altered in the following APIs:

- fwnode_get_next_parent_dev()
- fwnode_is_ancestor_of()
- fwnode_graph_get_endpoint_count()

so constify them.

Reported-by: Russell King (Oracle) <rmk+kernel@...linux.org.uk>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
---
 drivers/base/property.c  | 6 +++---
 include/linux/property.h | 6 +++---
 2 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/drivers/base/property.c b/drivers/base/property.c
index 3fc25e568598..b19ca8f752a8 100644
--- a/drivers/base/property.c
+++ b/drivers/base/property.c
@@ -648,7 +648,7 @@ EXPORT_SYMBOL_GPL(fwnode_get_next_parent);
  *
  * Return: a pointer to the device of the @fwnode's closest ancestor.
  */
-struct device *fwnode_get_next_parent_dev(struct fwnode_handle *fwnode)
+struct device *fwnode_get_next_parent_dev(const struct fwnode_handle *fwnode)
 {
 	struct fwnode_handle *parent;
 	struct device *dev;
@@ -718,7 +718,7 @@ EXPORT_SYMBOL_GPL(fwnode_get_nth_parent);
  *
  * Return: true if @ancestor is an ancestor of @child. Otherwise, returns false.
  */
-bool fwnode_is_ancestor_of(struct fwnode_handle *ancestor, struct fwnode_handle *child)
+bool fwnode_is_ancestor_of(const struct fwnode_handle *ancestor, const struct fwnode_handle *child)
 {
 	struct fwnode_handle *parent;
 
@@ -1235,7 +1235,7 @@ EXPORT_SYMBOL_GPL(fwnode_graph_get_endpoint_by_id);
  * If FWNODE_GRAPH_DEVICE_DISABLED flag is specified, also unconnected endpoints
  * and endpoints connected to disabled devices are counted.
  */
-unsigned int fwnode_graph_get_endpoint_count(struct fwnode_handle *fwnode,
+unsigned int fwnode_graph_get_endpoint_count(const struct fwnode_handle *fwnode,
 					     unsigned long flags)
 {
 	struct fwnode_handle *ep;
diff --git a/include/linux/property.h b/include/linux/property.h
index 9c774b0fe5bd..8ba804721fdf 100644
--- a/include/linux/property.h
+++ b/include/linux/property.h
@@ -104,11 +104,11 @@ struct fwnode_handle *fwnode_get_next_parent(struct fwnode_handle *fwnode);
 	for (parent = fwnode_get_parent(fwnode); parent;	\
 	     parent = fwnode_get_next_parent(parent))
 
-struct device *fwnode_get_next_parent_dev(struct fwnode_handle *fwnode);
+struct device *fwnode_get_next_parent_dev(const struct fwnode_handle *fwnode);
 unsigned int fwnode_count_parents(const struct fwnode_handle *fwn);
 struct fwnode_handle *fwnode_get_nth_parent(struct fwnode_handle *fwn,
 					    unsigned int depth);
-bool fwnode_is_ancestor_of(struct fwnode_handle *ancestor, struct fwnode_handle *child);
+bool fwnode_is_ancestor_of(const struct fwnode_handle *ancestor, const struct fwnode_handle *child);
 struct fwnode_handle *fwnode_get_next_child_node(
 	const struct fwnode_handle *fwnode, struct fwnode_handle *child);
 struct fwnode_handle *fwnode_get_next_available_child_node(
@@ -432,7 +432,7 @@ static inline bool fwnode_graph_is_endpoint(const struct fwnode_handle *fwnode)
 struct fwnode_handle *
 fwnode_graph_get_endpoint_by_id(const struct fwnode_handle *fwnode,
 				u32 port, u32 endpoint, unsigned long flags);
-unsigned int fwnode_graph_get_endpoint_count(struct fwnode_handle *fwnode,
+unsigned int fwnode_graph_get_endpoint_count(const struct fwnode_handle *fwnode,
 					     unsigned long flags);
 
 #define fwnode_graph_for_each_endpoint(fwnode, child)				\
-- 
2.40.0.1.gaa8946217a0b