The fwnode graph API is preferred over the ACPI graph API. Therefore make
the ACPI graph API private, and use it as a back-end for the fwnode graph
API only.
Unused functionality is removed while the functionality actually used
remains the same.
Signed-off-by: Sakari Ailus <sakari.ailus@xxxxxxxxxxxxxxx>
---
drivers/acpi/property.c | 83 ++++++++++---------------------------------------
include/linux/acpi.h | 8 -----
2 files changed, 16 insertions(+), 75 deletions(-)
diff --git a/drivers/acpi/property.c b/drivers/acpi/property.c
index 5878d3678b387..19bdada644351 100644
--- a/drivers/acpi/property.c
+++ b/drivers/acpi/property.c
@@ -1033,10 +1033,10 @@ struct fwnode_handle *acpi_node_get_parent(const struct fwnode_handle *fwnode)
* @prev: Previous endpoint node or %NULL to get the first
*
* Looks up next endpoint ACPI firmware node below a given @fwnode. Returns
- * %NULL if there is no next endpoint, ERR_PTR() in case of error. In case
- * of success the next endpoint is returned.
+ * %NULL if there is no next endpoint or in case of error. In case of success
+ * the next endpoint is returned.
*/
-struct fwnode_handle *acpi_graph_get_next_endpoint(
+static struct fwnode_handle *acpi_graph_get_next_endpoint(
const struct fwnode_handle *fwnode, struct fwnode_handle *prev)
{
struct fwnode_handle *port = NULL;
@@ -1065,11 +1065,9 @@ struct fwnode_handle *acpi_graph_get_next_endpoint(
endpoint = fwnode_get_next_child_node(port, NULL);
}
- if (endpoint) {
- /* Endpoints must have "endpoint" property */
- if (!fwnode_property_present(endpoint, "endpoint"))
- return ERR_PTR(-EPROTO);
- }
+ /* Endpoints must have "endpoint" property */
+ if (!fwnode_property_present(endpoint, "endpoint"))
+ return NULL;
return endpoint;
}
@@ -1106,18 +1104,12 @@ static struct fwnode_handle *acpi_graph_get_child_prop_value(
/**
* acpi_graph_get_remote_enpoint - Parses and returns remote end of an endpoint
* @fwnode: Endpoint firmware node pointing to a remote device
- * @parent: Firmware node of remote port parent is filled here if not %NULL
- * @port: Firmware node of remote port is filled here if not %NULL
* @endpoint: Firmware node of remote endpoint is filled here if not %NULL
*
- * Function parses remote end of ACPI firmware remote endpoint and fills in
- * fields requested by the caller. Returns %0 in case of success and
- * negative errno otherwise.
+ * Returns the remote endpoint corresponding to @__fwnode. NULL on error.
*/
-int acpi_graph_get_remote_endpoint(const struct fwnode_handle *__fwnode,
- struct fwnode_handle **parent,
- struct fwnode_handle **port,
- struct fwnode_handle **endpoint)
+static struct fwnode_handle *
+acpi_graph_get_remote_endpoint(const struct fwnode_handle *__fwnode)
{
struct fwnode_handle *fwnode;
unsigned int port_nr, endpoint_nr;
@@ -1128,47 +1120,27 @@ int acpi_graph_get_remote_endpoint(const struct fwnode_handle *__fwnode,
ret = acpi_node_get_property_reference(__fwnode, "remote-endpoint", 0,
&args);
if (ret)
- return ret;
+ return NULL;
/* Ensure this is a device node. */
if (!is_acpi_device_node(args.fwnode))
- return -ENODEV;
+ return NULL;
/*
* Always require two arguments with the reference: port and
* endpoint indices.
*/
if (args.nargs != 2)
- return -EPROTO;
+ return NULL;
fwnode = args.fwnode;
port_nr = args.args[0];
endpoint_nr = args.args[1];
- if (parent)
- *parent = fwnode;
-
- if (!port && !endpoint)
- return 0;
-
fwnode = acpi_graph_get_child_prop_value(fwnode, "port", port_nr);
- if (!fwnode)
- return -EPROTO;
-
- if (port)
- *port = fwnode;
-
- if (!endpoint)
- return 0;
-
- fwnode = acpi_graph_get_child_prop_value(fwnode, "endpoint",
- endpoint_nr);
- if (!fwnode)
- return -EPROTO;
- *endpoint = fwnode;
-
- return 0;
+ return acpi_graph_get_child_prop_value(fwnode, "endpoint",
+ endpoint_nr);
}
static bool acpi_fwnode_device_is_available(const struct fwnode_handle *fwnode)
@@ -1233,29 +1205,6 @@ acpi_fwnode_get_reference_args(const struct fwnode_handle *fwnode,
}
static struct fwnode_handle *
-acpi_fwnode_graph_get_next_endpoint(const struct fwnode_handle *fwnode,
- struct fwnode_handle *prev)
-{
- struct fwnode_handle *endpoint;
-
- endpoint = acpi_graph_get_next_endpoint(fwnode, prev);
- if (IS_ERR(endpoint))
- return NULL;
-
- return endpoint;
-}
-
-static struct fwnode_handle *
-acpi_fwnode_graph_get_remote_endpoint(const struct fwnode_handle *fwnode)
-{
- struct fwnode_handle *endpoint = NULL;
-
- acpi_graph_get_remote_endpoint(fwnode, NULL, NULL, &endpoint);
-
- return endpoint;
-}
-
-static struct fwnode_handle *
acpi_fwnode_get_parent(struct fwnode_handle *fwnode)
{
return acpi_node_get_parent(fwnode);
@@ -1295,9 +1244,9 @@ acpi_fwnode_device_get_match_data(const struct fwnode_handle *fwnode,
.get_named_child_node = acpi_fwnode_get_named_child_node, \
.get_reference_args = acpi_fwnode_get_reference_args, \
.graph_get_next_endpoint = \
- acpi_fwnode_graph_get_next_endpoint, \
+ acpi_graph_get_next_endpoint, \
.graph_get_remote_endpoint = \
- acpi_fwnode_graph_get_remote_endpoint, \
+ acpi_graph_get_remote_endpoint, \
.graph_get_port_parent = acpi_fwnode_get_parent, \
.graph_parse_endpoint = acpi_fwnode_graph_parse_endpoint, \
}; \
diff --git a/include/linux/acpi.h b/include/linux/acpi.h
index c134ce8493529..1989ffcbfb4a6 100644
--- a/include/linux/acpi.h
+++ b/include/linux/acpi.h
@@ -1086,14 +1086,6 @@ struct fwnode_handle *acpi_get_next_subnode(const struct fwnode_handle *fwnode,
struct fwnode_handle *child);
struct fwnode_handle *acpi_node_get_parent(const struct fwnode_handle *fwnode);
-struct fwnode_handle *
-acpi_graph_get_next_endpoint(const struct fwnode_handle *fwnode,
- struct fwnode_handle *prev);
-int acpi_graph_get_remote_endpoint(const struct fwnode_handle *fwnode,
- struct fwnode_handle **remote,
- struct fwnode_handle **port,
- struct fwnode_handle **endpoint);
-
struct acpi_probe_entry;
typedef bool (*acpi_probe_entry_validate_subtbl)(struct acpi_subtable_header *,
struct acpi_probe_entry *);
--
2.11.0
--
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