[PATCH v4 2/4] driver core: Move fw_devlink stuff to where it belongs

Andy Shevchenko
2024-03-01T18:02:07Z

A few APIs, i.e. fwnode_is_ancestor_of(), fwnode_get_next_parent_dev(),
and get_dev_from_fwnode(), that belong specifically to the fw_devlink APIs,
may be static, but they are not.

Resolve this mess by moving them to the driver/base/core where the all
users are being resided and make static.

No functional changes intended.

Reviewed-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Acked-by: Rafael J. Wysocki <rafael@kernel.org>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
drivers/base/core.c | 58 ++++++++++++++++++++++++++++++++++++++++
drivers/base/property.c | 56 --------------------------------------
include/linux/fwnode.h | 1 -
include/linux/property.h | 2 --
4 files changed, 58 insertions(+), 59 deletions(-)

diff --git a/drivers/base/core.c b/drivers/base/core.c
index 9828da9b933c..35ccd8bb2c9b 100644
--- a/drivers/base/core.c
+++ b/drivers/base/core.c
@@ -1871,6 +1871,7 @@ static void fw_devlink_unblock_consumers(struct device *dev)
device_links_write_unlock();
}

+#define get_dev_from_fwnode(fwnode) get_device((fwnode)->dev)

static bool fwnode_init_without_drv(struct fwnode_handle *fwnode)
{
@@ -1901,6 +1902,63 @@ static bool fwnode_ancestor_init_without_drv(struct fwnode_handle *fwnode)
return false;
}

+/**
+ * fwnode_is_ancestor_of - Test if @ancestor is ancestor of @child
+ * @ancestor: Firmware which is tested for being an ancestor
+ * @child: Firmware which is tested for being the child
+ *
+ * A node is considered an ancestor of itself too.
+ *
+ * Return: true if @ancestor is an ancestor of @child. Otherwise, returns false.
+ */
+static bool fwnode_is_ancestor_of(const struct fwnode_handle *ancestor,
+ const struct fwnode_handle *child)
+{
+ struct fwnode_handle *parent;
+
+ if (IS_ERR_OR_NULL(ancestor))
+ return false;
+
+ if (child == ancestor)
+ return true;
+
+ fwnode_for_each_parent_node(child, parent) {
+ if (parent == ancestor) {
+ fwnode_handle_put(parent);
+ return true;
+ }
+ }
+ return false;
+}
+
+/**
+ * fwnode_get_next_parent_dev - Find device of closest ancestor fwnode
+ * @fwnode: firmware node
+ *
+ * Given a firmware node (@fwnode), this function finds its closest ancestor
+ * firmware node that has a corresponding struct device and returns that struct
+ * device.
+ *
+ * The caller is responsible for calling put_device() on the returned device
+ * pointer.
+ *
+ * Return: a pointer to the device of the @fwnode's closest ancestor.
+ */
+static struct device *fwnode_get_next_parent_dev(const struct fwnode_handle *fwnode)
+{
+ struct fwnode_handle *parent;
+ struct device *dev;
+
+ fwnode_for_each_parent_node(fwnode, parent) {
+ dev = get_dev_from_fwnode(parent);
+ if (dev) {
+ fwnode_handle_put(parent);
+ return dev;
+ }
+ }
+ return NULL;
+}
+
/**
* __fw_devlink_relax_cycles - Relax and mark dependency cycles.
* @con: Potential consumer device.
diff --git a/drivers/base/property.c b/drivers/base/property.c
index a1b01ab42052..afa1bf2b3c5a 100644
--- a/drivers/base/property.c
+++ b/drivers/base/property.c
@@ -699,34 +699,6 @@ struct fwnode_handle *fwnode_get_next_parent(struct fwnode_handle *fwnode)
}
EXPORT_SYMBOL_GPL(fwnode_get_next_parent);

-/**
- * fwnode_get_next_parent_dev - Find device of closest ancestor fwnode
- * @fwnode: firmware node
- *
- * Given a firmware node (@fwnode), this function finds its closest ancestor
- * firmware node that has a corresponding struct device and returns that struct
- * device.
- *
- * The caller is responsible for calling put_device() on the returned device
- * pointer.
- *
- * Return: a pointer to the device of the @fwnode's closest ancestor.
- */
-struct device *fwnode_get_next_parent_dev(const struct fwnode_handle *fwnode)
-{
- struct fwnode_handle *parent;
- struct device *dev;
-
- fwnode_for_each_parent_node(fwnode, parent) {
- dev = get_dev_from_fwnode(parent);
- if (dev) {
- fwnode_handle_put(parent);
- return dev;
- }
- }
- return NULL;
-}
-
/**
* fwnode_count_parents - Return the number of parents a node has
* @fwnode: The node the parents of which are to be counted
@@ -773,34 +745,6 @@ struct fwnode_handle *fwnode_get_nth_parent(struct fwnode_handle *fwnode,
}
EXPORT_SYMBOL_GPL(fwnode_get_nth_parent);

-/**
- * fwnode_is_ancestor_of - Test if @ancestor is ancestor of @child
- * @ancestor: Firmware which is tested for being an ancestor
- * @child: Firmware which is tested for being the child
- *
- * A node is considered an ancestor of itself too.
- *
- * Return: true if @ancestor is an ancestor of @child. Otherwise, returns false.
- */
-bool fwnode_is_ancestor_of(const struct fwnode_handle *ancestor, const struct fwnode_handle *child)
-{
- struct fwnode_handle *parent;
-
- if (IS_ERR_OR_NULL(ancestor))
- return false;
-
- if (child == ancestor)
- return true;
-
- fwnode_for_each_parent_node(child, parent) {
- if (parent == ancestor) {
- fwnode_handle_put(parent);
- return true;
- }
- }
- return false;
-}
-
/**
* fwnode_get_next_child_node - Return the next child node handle for a node
* @fwnode: Firmware node to find the next child node for.
diff --git a/include/linux/fwnode.h b/include/linux/fwnode.h
index 2d23a14857c7..416cbe72f0c7 100644
--- a/include/linux/fwnode.h
+++ b/include/linux/fwnode.h
@@ -187,7 +187,6 @@ struct fwnode_operations {
if (fwnode_has_op(fwnode, op)) \
(fwnode)->ops->op(fwnode, ## __VA_ARGS__); \
} while (false)
-#define get_dev_from_fwnode(fwnode) get_device((fwnode)->dev)

static inline void fwnode_init(struct fwnode_handle *fwnode,
const struct fwnode_operations *ops)
diff --git a/include/linux/property.h b/include/linux/property.h
index e6516d0b7d52..284ff79ebf03 100644
--- a/include/linux/property.h
+++ b/include/linux/property.h
@@ -156,11 +156,9 @@ 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(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(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(
--
2.43.0.rc1.1.gbec44491f096