6.6-stable review patch. If anyone has any objections, please let me know.
------------------
From: Saravana Kannan <saravanak@xxxxxxxxxx>
[ Upstream commit f4653ec9861cd96a1a6a3258c4a807898ee8cf3c ]
We have a more accurate function to find the right consumer of a
remote-endpoint property instead of searching for a parent with
compatible string property. So, use that instead. While at it, make the
code to find the consumer a bit more flexible and based on the property
being parsed.
Fixes: f7514a663016 ("of: property: fw_devlink: Add support for remote-endpoint")
Signed-off-by: Saravana Kannan <saravanak@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20240207011803.2637531-2-saravanak@xxxxxxxxxx
Signed-off-by: Rob Herring <robh@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/of/property.c | 47 +++++++++----------------------------------
1 file changed, 10 insertions(+), 37 deletions(-)
diff --git a/drivers/of/property.c b/drivers/of/property.c
index cf8dacf3e3b8..4411a08fccb3 100644
--- a/drivers/of/property.c
+++ b/drivers/of/property.c
@@ -1062,36 +1062,6 @@ of_fwnode_device_get_match_data(const struct fwnode_handle *fwnode,
return of_device_get_match_data(dev);
}
-static struct device_node *of_get_compat_node(struct device_node *np)
-{
- of_node_get(np);
-
- while (np) {
- if (!of_device_is_available(np)) {
- of_node_put(np);
- np = NULL;
- }
-
- if (of_property_present(np, "compatible"))
- break;
-
- np = of_get_next_parent(np);
- }
-
- return np;
-}
-
-static struct device_node *of_get_compat_node_parent(struct device_node *np)
-{
- struct device_node *parent, *node;
-
- parent = of_get_parent(np);
- node = of_get_compat_node(parent);
- of_node_put(parent);
-
- return node;
-}
-
static void of_link_to_phandle(struct device_node *con_np,
struct device_node *sup_np)
{
@@ -1221,10 +1191,10 @@ static struct device_node *parse_##fname(struct device_node *np, \
* @parse_prop.prop_name: Name of property holding a phandle value
* @parse_prop.index: For properties holding a list of phandles, this is the
* index into the list
+ * @get_con_dev: If the consumer node containing the property is never converted
+ * to a struct device, implement this ops so fw_devlink can use it
+ * to find the true consumer.
* @optional: Describes whether a supplier is mandatory or not
- * @node_not_dev: The consumer node containing the property is never converted
- * to a struct device. Instead, parse ancestor nodes for the
- * compatible property to find a node corresponding to a device.
*
* Returns:
* parse_prop() return values are
@@ -1235,8 +1205,8 @@ static struct device_node *parse_##fname(struct device_node *np, \
struct supplier_bindings {
struct device_node *(*parse_prop)(struct device_node *np,
const char *prop_name, int index);
+ struct device_node *(*get_con_dev)(struct device_node *np);
bool optional;
- bool node_not_dev;
};
DEFINE_SIMPLE_PROP(clocks, "clocks", "#clock-cells")
@@ -1350,7 +1320,10 @@ static const struct supplier_bindings of_supplier_bindings[] = {
{ .parse_prop = parse_pinctrl6, },
{ .parse_prop = parse_pinctrl7, },
{ .parse_prop = parse_pinctrl8, },
- { .parse_prop = parse_remote_endpoint, .node_not_dev = true, },
+ {
+ .parse_prop = parse_remote_endpoint,
+ .get_con_dev = of_graph_get_port_parent,
+ },
{ .parse_prop = parse_pwms, },
{ .parse_prop = parse_resets, },
{ .parse_prop = parse_leds, },
@@ -1400,8 +1373,8 @@ static int of_link_property(struct device_node *con_np, const char *prop_name)
while ((phandle = s->parse_prop(con_np, prop_name, i))) {
struct device_node *con_dev_np;
- con_dev_np = s->node_not_dev
- ? of_get_compat_node_parent(con_np)
+ con_dev_np = s->get_con_dev
+ ? s->get_con_dev(con_np)
: of_node_get(con_np);
matched = true;
i++;
--
2.43.0
