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base: core: Remove WARN_ON from link dependencies check

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In some cases the link between between customer and supplier
already exist, for example when a device use its parent as a supplier.
Do not warn about already existing dependencies because device_link_add()
takes care of this case.

Link: http://lkml.kernel.org/r/20180709111753eucas1p1f32e66fb2f7ea3216097cd72a132355d~-rzycA5Rg0378203782eucas1p1C@eucas1p1.samsung.com

Reported-by: Marek Szyprowski <m.szyprowski@samsung.com>
Reviewed-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@st.com>
Reviewed-by: Rafael J. Wysocki <rafael@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Benjamin Gaignard 2018-07-16 13:37:44 +02:00 committed by Greg Kroah-Hartman
parent 3297c8fc65
commit e16f4f3e0b
1 changed files with 2 additions and 2 deletions
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4
drivers/base/core.c
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@ -105,7 +105,7 @@ static int device_is_dependent(struct device *dev, void *target)
struct device_link *link;
int ret;
if (WARN_ON(dev == target))
if (dev == target)
return 1;
ret = device_for_each_child(dev, target, device_is_dependent);
@ -113,7 +113,7 @@ static int device_is_dependent(struct device *dev, void *target)
return ret;
list_for_each_entry(link, &dev->links.consumers, s_node) {
if (WARN_ON(link->consumer == target))
if (link->consumer == target)
return 1;
ret = device_is_dependent(link->consumer, target);