Function prototype or declaration at include/media/v4l2-async.h, line 321 References: drivers/media/i2c/et8ek8/et8ek8_driver.c, line 1448 drivers/media/i2c/hi556.c, line 1150 drivers/media/i2c/imx214.c, line 1064 drivers/media/i2c/imx219.c, line 1414 drivers/media/i2c/imx258.c, line 1247 drivers/media/i2c/imx319.c, line 2491 drivers/media/i2c/imx355.c, line 1791 drivers/media/i2c/ov13858.c, line 1732 drivers/media/i2c/ov5640.c, line 3087 drivers/media/i2c/ov5670.c, line 2495 drivers/media/i2c/ov5675.c, line 1193 drivers/media/i2c/ov5695.c, line 1341 drivers/media/i2c/ov8856.c, line 1217 drivers/media/i2c/smiapp/smiapp-core.c, line 3095 drivers/media/v4l2-core/v4l2-fwnode.c, line 1284 drivers/media/v4l2-core/v4l2-fwnode.c, line 1324 include/media/v4l2-async.h, line 321