[alsa-devel] [PATCH v3 1/2] drivers/base: permit base components to omit the bind/unbind ops

[Jean-Francois Moine]

Some simple components don't need to do any specific action on
bind to / unbind from a master component.

This patch permits such components to omit the bind/unbind
operations.

Signed-off-by: Jean-Francois Moine <moinejf at free.fr>
---
 drivers/base/component.c | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/drivers/base/component.c b/drivers/base/component.c
index c53efe6..0a39d7a 100644
--- a/drivers/base/component.c
+++ b/drivers/base/component.c
@@ -225,7 +225,8 @@ static void component_unbind(struct component *component,
 {
 	WARN_ON(!component->bound);
 
-	component->ops->unbind(component->dev, master->dev, data);
+	if (component->ops)
+		component->ops->unbind(component->dev, master->dev, data);
 	component->bound = false;
 
 	/* Release all resources claimed in the binding of this component */
@@ -274,7 +275,11 @@ static int component_bind(struct component *component, struct master *master,
 	dev_dbg(master->dev, "binding %s (ops %ps)\n",
 		dev_name(component->dev), component->ops);
 
-	ret = component->ops->bind(component->dev, master->dev, data);
+	if (component->ops)
+		ret = component->ops->bind(component->dev, master->dev, data);
+	else
+		ret = 0;
+
 	if (!ret) {
 		component->bound = true;
 
-- 
1.9.rc1