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MediaTek IOMMU has already added the device_link between the consumer and smi-larb device. If the mdp device calls the pm_runtime_get_sync, the smi-larb's pm_runtime_get_sync also be called automatically. CC: Minghsiu Tsai <minghsiu.tsai@mediatek.com> Signed-off-by: Yong Wu <yong.wu@mediatek.com> Reviewed-by: Evan Green <evgreen@chromium.org> Reviewed-by: Houlong Wei <houlong.wei@mediatek.com> Reviewed-by: Dafna Hirschfeld <dafna.hirschfeld@collabora.com> Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>