commitf401671e90upstream. Make sure to drop the reference taken to the mbox platform device when looking up its driver data. Note that holding a reference to a device does not prevent its driver data from going away so there is no point in keeping the reference. Fixes:6e1457fcad("soc: apple: mailbox: Add ASC/M3 mailbox driver") Cc: stable@vger.kernel.org # 6.8 Signed-off-by: Johan Hovold <johan@kernel.org> Reviewed-by: Neal Gompa <neal@gompa.dev> Signed-off-by: Sven Peter <sven@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>