FWCAM_STATE_STREAMING
if (sc->dma_ch >= 0 || sc->state == FWCAM_STATE_STREAMING) {
sc->state = FWCAM_STATE_STREAMING;
sc->state != FWCAM_STATE_STREAMING) {
if (sc->state == FWCAM_STATE_STREAMING) {
if (sc->state != FWCAM_STATE_STREAMING) {
if (sc->state == FWCAM_STATE_STREAMING) {
[FWCAM_STATE_STREAMING] = "streaming",