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da717540ac
Make sure to drop the reference to the ptp device taken by
of_find_device_by_node() when querying the time stamping capabilities.
Note that holding a reference to the ptp device does not prevent its
driver data from going away.
Fixes: 7349a74ea7 ("net: ethernet: gianfar_ethtool: get phc index through drvdata")
Cc: stable@vger.kernel.org # 4.18
Cc: Yangbo Lu <yangbo.lu@nxp.com>
Signed-off-by: Johan Hovold <johan@kernel.org>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20250725171213.880-4-johan@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>