Function prototype or declaration at include/media/v4l2-async.h, line 249 References: drivers/media/i2c/max9286.c, line 630 drivers/media/i2c/st-mipid02.c, line 893 drivers/media/platform/cadence/cdns-csi2rx.c, line 415 drivers/media/platform/rcar-vin/rcar-csi2.c, line 929 drivers/media/platform/video-mux.c, line 398 drivers/media/v4l2-core/v4l2-async.c, line 541 drivers/media/v4l2-core/v4l2-async.c, line 557 drivers/media/v4l2-core/v4l2-fwnode.c, line 1329 drivers/staging/media/imx/imx-media-csi.c, line 1953 drivers/staging/media/imx/imx6-mipi-csi2.c, line 675 drivers/staging/media/imx/imx7-media-csi.c, line 1130 drivers/staging/media/imx/imx7-mipi-csis.c, line 1203 include/media/v4l2-async.h, line 249