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@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;