Function prototype or declaration at include/media/cec.h, line 243 References: drivers/gpu/drm/bridge/adv7511/adv7511_drv.c, line 1323 drivers/gpu/drm/bridge/synopsys/dw-hdmi-cec.c, line 306 drivers/gpu/drm/drm_dp_cec.c, line 289 drivers/gpu/drm/drm_dp_cec.c, line 328 drivers/gpu/drm/drm_dp_cec.c, line 349 drivers/gpu/drm/drm_dp_cec.c, line 448 drivers/gpu/drm/omapdrm/dss/hdmi4_cec.c, line 352 drivers/gpu/drm/sun4i/sun4i_hdmi_enc.c, line 649 drivers/gpu/drm/vc4/vc4_hdmi.c, line 1467 drivers/media/cec/cec-core.c, line 407 drivers/media/cec/cec-core.c, line 424 drivers/media/i2c/adv7511.c, line 1735 drivers/media/i2c/adv7604.c, line 2637 drivers/media/i2c/adv7842.c, line 3253 drivers/media/i2c/tc358743.c, line 2170 drivers/media/i2c/tc358743.c, line 2191 drivers/media/platform/cec-gpio/cec-gpio.c, line 202 drivers/media/platform/meson/ao-cec.c, line 718 drivers/media/platform/s5p-cec/s5p_cec.c, line 258 drivers/media/platform/sti/cec/stih-cec.c, line 372 drivers/media/platform/stm32/stm32-cec.c, line 332 drivers/media/platform/tegra-cec/tegra_cec.c, line 442 drivers/media/platform/vivid/vivid-core.c, line 1385 drivers/media/platform/vivid/vivid-core.c, line 1387 drivers/media/platform/vivid/vivid-core.c, line 1489 drivers/media/platform/vivid/vivid-core.c, line 1491 drivers/media/usb/pulse8-cec/pulse8-cec.c, line 236 drivers/media/usb/rainshadow-cec/rainshadow-cec.c, line 192 include/media/cec.h, line 243 include/media/cec.h, line 349