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commit17dc8ccd6dupstream. v4l2_device_register_subdev_nodes() must called without taking media_dev->graph_mutex to avoid potential AB-BA deadlock on further subdevice driver initialization. Fixes:fa91f1056f("[media] exynos4-is: Add support for asynchronous subdevices registration") Cc: stable@vger.kernel.org Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Acked-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>