VS_DRV_IDLE
vscan_drv_state = VS_DRV_IDLE;
if ((vscan_drv_state != VS_DRV_IDLE) &&
case VS_DRV_IDLE:
vscan_drv_state = VS_DRV_IDLE;
vscan_drv_state = VS_DRV_IDLE;
vscan_drv_state = VS_DRV_IDLE;