[PATCH 3/4] device connection: Remove struct device_connection

Heikki Krogerus
2020-09-04T12:52:24Z

Since the connection descriptors can't be stored into the
list anymore, there is no need for the data structure.

Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
---
drivers/base/devcon.c | 20 ++++++++++----------
drivers/usb/roles/class.c | 12 ++++--------
drivers/usb/typec/mux.c | 19 ++++++++++---------
include/linux/device.h | 18 +-----------------
4 files changed, 25 insertions(+), 44 deletions(-)

diff --git a/drivers/base/devcon.c b/drivers/base/devcon.c
index 94ab22a451ce3..1790e84dbe7c2 100644
--- a/drivers/base/devcon.c
+++ b/drivers/base/devcon.c
@@ -13,17 +13,17 @@ static void *
fwnode_graph_devcon_match(struct fwnode_handle *fwnode, const char *con_id,
void *data, devcon_match_fn_t match)
{
- struct device_connection con = { .id = con_id };
+ struct fwnode_handle *node;
struct fwnode_handle *ep;
void *ret;

fwnode_graph_for_each_endpoint(fwnode, ep) {
- con.fwnode = fwnode_graph_get_remote_port_parent(ep);
- if (!fwnode_device_is_available(con.fwnode))
+ node = fwnode_graph_get_remote_port_parent(ep);
+ if (!fwnode_device_is_available(node))
continue;

- ret = match(&con, -1, data);
- fwnode_handle_put(con.fwnode);
+ ret = match(node, con_id, data);
+ fwnode_handle_put(node);
if (ret) {
fwnode_handle_put(ep);
return ret;
@@ -36,17 +36,17 @@ static void *
fwnode_devcon_match(struct fwnode_handle *fwnode, const char *con_id,
void *data, devcon_match_fn_t match)
{
- struct device_connection con = { };
+ struct fwnode_handle *node;
void *ret;
int i;

for (i = 0; ; i++) {
- con.fwnode = fwnode_find_reference(fwnode, con_id, i);
- if (IS_ERR(con.fwnode))
+ node = fwnode_find_reference(fwnode, con_id, i);
+ if (IS_ERR(node))
break;

- ret = match(&con, -1, data);
- fwnode_handle_put(con.fwnode);
+ ret = match(node, NULL, data);
+ fwnode_handle_put(node);
if (ret)
return ret;
}
diff --git a/drivers/usb/roles/class.c b/drivers/usb/roles/class.c
index 27d92af296351..97f37077b7f97 100644
--- a/drivers/usb/roles/class.c
+++ b/drivers/usb/roles/class.c
@@ -87,19 +87,15 @@ enum usb_role usb_role_switch_get_role(struct usb_role_switch *sw)
}
EXPORT_SYMBOL_GPL(usb_role_switch_get_role);

-static void *usb_role_switch_match(struct device_connection *con, int ep,
+static void *usb_role_switch_match(struct fwnode_handle *fwnode, const char *id,
void *data)
{
struct device *dev;

- if (con->fwnode) {
- if (con->id && !fwnode_property_present(con->fwnode, con->id))
- return NULL;
+ if (id && !fwnode_property_present(fwnode, id))
+ return NULL;

- dev = class_find_device_by_fwnode(role_class, con->fwnode);
- } else {
- dev = class_find_device_by_name(role_class, con->endpoint[ep]);
- }
+ dev = class_find_device_by_fwnode(role_class, fwnode);

return dev ? to_role_switch(dev) : ERR_PTR(-EPROBE_DEFER);
}
diff --git a/drivers/usb/typec/mux.c b/drivers/usb/typec/mux.c
index 52ad277e4565b..b069a5122aaa9 100644
--- a/drivers/usb/typec/mux.c
+++ b/drivers/usb/typec/mux.c
@@ -34,15 +34,15 @@ static int switch_fwnode_match(struct device *dev, const void *fwnode)
return dev_fwnode(dev) == fwnode && dev_name_ends_with(dev, "-switch");
}

-static void *typec_switch_match(struct device_connection *con, int ep,
+static void *typec_switch_match(struct fwnode_handle *fwnode, const char *id,
void *data)
{
struct device *dev;

- if (con->id && !fwnode_property_present(con->fwnode, con->id))
+ if (id && !fwnode_property_present(fwnode, id))
return NULL;

- dev = class_find_device(&typec_mux_class, NULL, con->fwnode,
+ dev = class_find_device(&typec_mux_class, NULL, fwnode,
switch_fwnode_match);

return dev ? to_typec_switch(dev) : ERR_PTR(-EPROBE_DEFER);
@@ -183,7 +183,8 @@ static int mux_fwnode_match(struct device *dev, const void *fwnode)
return dev_fwnode(dev) == fwnode && dev_name_ends_with(dev, "-mux");
}

-static void *typec_mux_match(struct device_connection *con, int ep, void *data)
+static void *typec_mux_match(struct fwnode_handle *fwnode, const char *id,
+ void *data)
{
const struct typec_altmode_desc *desc = data;
struct device *dev;
@@ -196,20 +197,20 @@ static void *typec_mux_match(struct device_connection *con, int ep, void *data)
* Check has the identifier already been "consumed". If it
* has, no need to do any extra connection identification.
*/
- match = !con->id;
+ match = !id;
if (match)
goto find_mux;

/* Accessory Mode muxes */
if (!desc) {
- match = fwnode_property_present(con->fwnode, "accessory");
+ match = fwnode_property_present(fwnode, "accessory");
if (match)
goto find_mux;
return NULL;
}

/* Alternate Mode muxes */
- nval = fwnode_property_count_u16(con->fwnode, "svid");
+ nval = fwnode_property_count_u16(fwnode, "svid");
if (nval <= 0)
return NULL;

@@ -217,7 +218,7 @@ static void *typec_mux_match(struct device_connection *con, int ep, void *data)
if (!val)
return ERR_PTR(-ENOMEM);

- nval = fwnode_property_read_u16_array(con->fwnode, "svid", val, nval);
+ nval = fwnode_property_read_u16_array(fwnode, "svid", val, nval);
if (nval < 0) {
kfree(val);
return ERR_PTR(nval);
@@ -234,7 +235,7 @@ static void *typec_mux_match(struct device_connection *con, int ep, void *data)
return NULL;

find_mux:
- dev = class_find_device(&typec_mux_class, NULL, con->fwnode,
+ dev = class_find_device(&typec_mux_class, NULL, fwnode,
mux_fwnode_match);

return dev ? to_typec_switch(dev) : ERR_PTR(-EPROBE_DEFER);
diff --git a/include/linux/device.h b/include/linux/device.h
index 43569297c6cc1..c3ced17d91ee6 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -292,23 +292,7 @@ struct device_dma_parameters {
unsigned long segment_boundary_mask;
};

-/**
- * struct device_connection - Device Connection Descriptor
- * @fwnode: The device node of the connected device
- * @endpoint: The names of the two devices connected together
- * @id: Unique identifier for the connection
- *
- * NOTE: @fwnode is not used together with @endpoint. @fwnode is used when
- * platform firmware defines the connection. When the connection is registered
- * with device_connection_add() @endpoint is used instead.
- */
-struct device_connection {
- struct fwnode_handle *fwnode;
- const char *endpoint[2];
- const char *id;
-};
-
-typedef void *(*devcon_match_fn_t)(struct device_connection *con, int ep,
+typedef void *(*devcon_match_fn_t)(struct fwnode_handle *fwnode, const char *id,
void *data);

void *fwnode_connection_find_match(struct fwnode_handle *fwnode,
--
2.28.0