gsc_unregister_m2m_device 1215 drivers/media/platform/exynos-gsc/gsc-core.c 	gsc_unregister_m2m_device(gsc);
gsc_unregister_m2m_device  380 drivers/media/platform/exynos-gsc/gsc-core.h void gsc_unregister_m2m_device(struct gsc_dev *gsc);