Messages in this thread Patch in this message | | | From | Greg Kroah-Hartman <> | Subject | [PATCH 4.14 06/15] base: core: Remove WARN_ON from link dependencies check | Date | Fri, 5 Feb 2021 15:08:51 +0100 |
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From: Benjamin Gaignard <benjamin.gaignard@linaro.org>
commit e16f4f3e0b7daecd48d4f944ab4147c1a6cb16a8 upstream
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> Signed-off-by: Sudip Mukherjee <sudipm.mukherjee@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> --- drivers/base/core.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
--- a/drivers/base/core.c +++ b/drivers/base/core.c @@ -109,7 +109,7 @@ static int device_is_dependent(struct de 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); @@ -117,7 +117,7 @@ static int device_is_dependent(struct de 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);
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