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authorMarco Felsch <m.felsch@pengutronix.de>2020-02-27 11:45:47 +0100
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2020-03-18 14:13:33 +0100
commit14422f14da818a3f12344dceee47b4206870a24d (patch)
treedbed27d4dd7b0a2d73dc3639fb56389c5e45c079 /drivers/base
parent526ee72dfdf74f4c14cbe165d68736f86bff6cf2 (diff)
component: allow missing unbind callback
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>
Diffstat (limited to 'drivers/base')
-rw-r--r--drivers/base/component.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/base/component.c b/drivers/base/component.c
index c7879f5ae2fb..e97704104784 100644
--- a/drivers/base/component.c
+++ b/drivers/base/component.c
@@ -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 */