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component: allow missing unbind callback

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The component framework reuses the devres managed functions. There is no
need to specify an unbind() callback if the driver only wants to release
the devres managed resources. The bind/unbind is like the probe/remove
pair. The bind/probe is necessary and the unbind/remove is optional.

Signed-off-by: Marco Felsch <m.felsch@pengutronix.de>
Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de>
Link: https://lore.kernel.org/r/20200227104547.30085-1-m.felsch@pengutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Marco Felsch 2020-02-27 11:45:47 +01:00 • committed by Greg Kroah-Hartman
parent 526ee72dfd
commit 14422f14da
1 changed files with 2 additions and 1 deletions
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3
drivers/base/component.c
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@ -528,7 +528,8 @@ 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->ops->unbind(component->dev, master->dev, data);
component->bound = false;
/* Release all resources claimed in the binding of this component */