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component: do not try to unbind unbound components 

Error handling is apparently hard and driver authors often get it wrong.

Continue to warn but do not try to unbind components that have never
been bound in order to avoid crashing systems where such a buggy
teardown path is hit.

Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
Link: https://lore.kernel.org/r/20250228081824.4640-1-johan+linaro@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Johan Hovold 2025-02-28 09:18:24 +01:00 committed by Greg Kroah-Hartman
parent eaa0d30216
commit 5bcca36898
1 changed files with 2 additions and 1 deletions
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3
drivers/base/component.c
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@ -586,7 +586,8 @@ EXPORT_SYMBOL_GPL(component_master_is_bound);
static void component_unbind(struct component *component,
struct aggregate_device *adev, void *data)
{
WARN_ON(!component->bound);
if (WARN_ON(!component->bound))
return;
dev_dbg(adev->parent, "unbinding %s component %p (ops %ps)\n",
dev_name(component->dev), component, component->ops);