Zijun Hu e1844376e3 of/irq: Fix device node refcount leakage in API of_irq_parse_raw()
commit ff93e7213d upstream.

if the node @out_irq->np got by of_irq_parse_raw() is a combo node which
consists of both controller and nexus, namely, of_irq_parse_raw() returns
due to condition (@ipar == @newpar), then the node's refcount was increased
twice, hence causes refcount leakage.

Fix by putting @out_irq->np refcount before returning due to the condition.
Also add comments about refcount of node @out_irq->np got by the API.

Fixes: 0412841812 ("of/irq: Allow matching of an interrupt-map local to an interrupt controller")
Cc: stable@vger.kernel.org
Signed-off-by: Zijun Hu <quic_zijuhu@quicinc.com>
Link: https://lore.kernel.org/r/20250209-of_irq_fix-v2-4-93e3a2659aa7@quicinc.com
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2025-04-20 10:18:24 +02:00
2024-09-01 20:43:24 -07:00
2022-09-28 09:02:20 +02:00
2025-04-20 10:18:11 +02:00
2024-03-18 03:36:32 -06:00

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