greybus: connection: remove skip-connected legacy protocol flags

Remove the legacy protocol flags that were used to suppress the
connected and disconnected events.

Instead send the connected and disconnected event for all bundle
connections and explicitly exclude static connections and control
connections.

Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Johan Hovold <johan@hovoldconsulting.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>

drivers/staging/greybus/connection.c

@@ -295,15 +295,17 @@ gb_connection_svc_connection_destroy(struct gb_connection *connection)
 /* Inform Interface about active CPorts */
 static int gb_connection_control_connected(struct gb_connection *connection)
 {
-	struct gb_protocol *protocol = connection->protocol;
 	struct gb_control *control;
 	u16 cport_id = connection->intf_cport_id;
 	int ret;
 
-	if (protocol->flags & GB_PROTOCOL_SKIP_CONTROL_CONNECTED)
+	if (gb_connection_is_static(connection))
 		return 0;
 
-	control = connection->bundle->intf->control;
+	control = connection->intf->control;
+
+	if (connection == control->connection)
+		return 0;
 
 	ret = gb_control_connected_operation(control, cport_id);
 	if (ret) {
@@ -319,15 +321,17 @@ static int gb_connection_control_connected(struct gb_connection *connection)
 static void
 gb_connection_control_disconnected(struct gb_connection *connection)
 {
-	struct gb_protocol *protocol = connection->protocol;
 	struct gb_control *control;
 	u16 cport_id = connection->intf_cport_id;
 	int ret;
 
-	if (protocol->flags & GB_PROTOCOL_SKIP_CONTROL_DISCONNECTED)
+	if (gb_connection_is_static(connection))
 		return;
 
-	control = connection->bundle->intf->control;
+	control = connection->intf->control;
+
+	if (connection == control->connection)
+		return;
 
 	ret = gb_control_disconnected_operation(control, cport_id);
 	if (ret) {

drivers/staging/greybus/control.c

@@ -159,7 +159,5 @@ static struct gb_protocol control_protocol = {
 	.minor			= GB_CONTROL_VERSION_MINOR,
 	.connection_init	= gb_control_connection_init,
 	.connection_exit	= gb_control_connection_exit,
-	.flags			= GB_PROTOCOL_SKIP_CONTROL_CONNECTED |
-				  GB_PROTOCOL_SKIP_CONTROL_DISCONNECTED,
 };
 gb_builtin_protocol_driver(control_protocol);

drivers/staging/greybus/protocol.h

@@ -14,8 +14,6 @@ struct gb_connection;
 struct gb_operation;
 
 /* Possible flags for protocol drivers */
-#define GB_PROTOCOL_SKIP_CONTROL_CONNECTED	BIT(0)	/* Don't sent connected requests */
-#define GB_PROTOCOL_SKIP_CONTROL_DISCONNECTED	BIT(1)	/* Don't sent disconnected requests */
 #define GB_PROTOCOL_SKIP_VERSION		BIT(3)	/* Don't send get_version() requests */
 
 typedef int (*gb_connection_init_t)(struct gb_connection *);

drivers/staging/greybus/svc.c

@@ -864,8 +864,6 @@ static struct gb_protocol svc_protocol = {
 	.connection_init	= gb_svc_connection_init,
 	.connection_exit	= gb_svc_connection_exit,
 	.request_recv		= gb_svc_request_recv,
-	.flags			= GB_PROTOCOL_SKIP_CONTROL_CONNECTED |
-				  GB_PROTOCOL_SKIP_CONTROL_DISCONNECTED |
-				  GB_PROTOCOL_SKIP_VERSION,
+	.flags			= GB_PROTOCOL_SKIP_VERSION,
 };
 gb_builtin_protocol_driver(svc_protocol);