On Thu, Oct 24, 2024 at 10:39:30PM +0800, Zijun Hu wrote:
From: Zijun Hu quic_zijuhu@quicinc.com
For macro for_each_child_of_node(parent, child), refcount of @child has been increased before entering its loop body, so normally needs to call of_node_put(@child) before returning from the loop body to avoid refcount leakage.
of_phy_provider_lookup() has such usage but does not call of_node_put() before returning, so cause leakage of the OF node refcount.
Fixed by simply calling of_node_put() before returning from the loop body.
The APIs affected by this issue are shown below since they indirectly invoke problematic of_phy_provider_lookup(). phy_get() of_phy_get() devm_phy_get() devm_of_phy_get() devm_of_phy_get_by_index()
Fixes: 2a4c37016ca9 ("phy: core: Fix of_phy_provider_lookup to return PHY provider for sub node") Cc: stable@vger.kernel.org Signed-off-by: Zijun Hu quic_zijuhu@quicinc.com
Looks good.
Reviewed-by: Johan Hovold johan+linaro@kernel.org