v4l2_m2m_buf_queue(ctx->m2m_ctx, vbuf);
 }
 
-static struct vb2_ops gsc_m2m_qops = {
+static const struct vb2_ops gsc_m2m_qops = {
        .queue_setup     = gsc_m2m_queue_setup,
        .buf_prepare     = gsc_m2m_buf_prepare,
        .buf_queue       = gsc_m2m_buf_queue,
 
        spin_unlock_irqrestore(&fimc->slock, flags);
 }
 
-static struct vb2_ops fimc_capture_qops = {
+static const struct vb2_ops fimc_capture_qops = {
        .queue_setup            = queue_setup,
        .buf_prepare            = buffer_prepare,
        .buf_queue              = buffer_queue,
 
        v4l2_m2m_buf_queue(ctx->fh.m2m_ctx, vbuf);
 }
 
-static struct vb2_ops fimc_qops = {
+static const struct vb2_ops fimc_qops = {
        .queue_setup     = fimc_queue_setup,
        .buf_prepare     = fimc_buf_prepare,
        .buf_queue       = fimc_buf_queue,
 
        v4l2_m2m_buf_queue(ctx->m2m_ctx, vbuf);
 }
 
-static struct vb2_ops deinterlace_qops = {
+static const struct vb2_ops deinterlace_qops = {
        .queue_setup     = deinterlace_queue_setup,
        .buf_prepare     = deinterlace_buf_prepare,
        .buf_queue       = deinterlace_buf_queue,
 
        ctx->state = MTK_STATE_FREE;
 }
 
-static struct vb2_ops mtk_venc_vb2_ops = {
+static const struct vb2_ops mtk_venc_vb2_ops = {
        .queue_setup            = vb2ops_venc_queue_setup,
        .buf_prepare            = vb2ops_venc_buf_prepare,
        .buf_queue              = vb2ops_venc_buf_queue,
 
        v4l2_m2m_buf_queue(ctx->m2m_ctx, vbuf);
 }
 
-static struct vb2_ops emmaprp_qops = {
+static const struct vb2_ops emmaprp_qops = {
        .queue_setup     = emmaprp_queue_setup,
        .buf_prepare     = emmaprp_buf_prepare,
        .buf_queue       = emmaprp_buf_queue,
 
        rvin_disable_interrupts(vin);
 }
 
-static struct vb2_ops rvin_qops = {
+static const struct vb2_ops rvin_qops = {
        .queue_setup            = rvin_queue_setup,
        .buf_prepare            = rvin_buffer_prepare,
        .buf_queue              = rvin_buffer_queue,
 
        }
 }
 
-static struct vb2_ops jpu_qops = {
+static const struct vb2_ops jpu_qops = {
        .queue_setup            = jpu_queue_setup,
        .buf_prepare            = jpu_buf_prepare,
        .buf_queue              = jpu_buf_queue,
 
        v4l2_m2m_buf_queue(ctx->fh.m2m_ctx, vbuf);
 }
 
-static struct vb2_ops g2d_qops = {
+static const struct vb2_ops g2d_qops = {
        .queue_setup    = g2d_queue_setup,
        .buf_prepare    = g2d_buf_prepare,
        .buf_queue      = g2d_buf_queue,
 
        pm_runtime_put(ctx->jpeg->dev);
 }
 
-static struct vb2_ops s5p_jpeg_qops = {
+static const struct vb2_ops s5p_jpeg_qops = {
        .queue_setup            = s5p_jpeg_queue_setup,
        .buf_prepare            = s5p_jpeg_buf_prepare,
        .buf_queue              = s5p_jpeg_buf_queue,
 
        spin_unlock_irqrestore(&vou_dev->lock, flags);
 }
 
-static struct vb2_ops sh_vou_qops = {
+static const struct vb2_ops sh_vou_qops = {
        .queue_setup            = sh_vou_queue_setup,
        .buf_prepare            = sh_vou_buf_prepare,
        .buf_queue              = sh_vou_buf_queue,
 
        pm_runtime_put(ici->v4l2_dev.dev);
 }
 
-static struct vb2_ops isi_video_qops = {
+static const struct vb2_ops isi_video_qops = {
        .queue_setup            = queue_setup,
        .buf_init               = buffer_init,
        .buf_prepare            = buffer_prepare,
 
        sh_mobile_ceu_soft_reset(pcdev);
 }
 
-static struct vb2_ops sh_mobile_ceu_videobuf_ops = {
+static const struct vb2_ops sh_mobile_ceu_videobuf_ops = {
        .queue_setup    = sh_mobile_ceu_videobuf_setup,
        .buf_prepare    = sh_mobile_ceu_videobuf_prepare,
        .buf_queue      = sh_mobile_ceu_videobuf_queue,
 
        pm_runtime_put(ctx->bdisp_dev->dev);
 }
 
-static struct vb2_ops bdisp_qops = {
+static const struct vb2_ops bdisp_qops = {
        .queue_setup     = bdisp_queue_setup,
        .buf_prepare     = bdisp_buf_prepare,
        .buf_queue       = bdisp_buf_queue,
 
        cal_runtime_put(ctx->dev);
 }
 
-static struct vb2_ops cal_video_qops = {
+static const struct vb2_ops cal_video_qops = {
        .queue_setup            = cal_queue_setup,
        .buf_prepare            = cal_buffer_prepare,
        .buf_queue              = cal_buffer_queue,
 
        vpdma_dump_regs(ctx->dev->vpdma);
 }
 
-static struct vb2_ops vpe_qops = {
+static const struct vb2_ops vpe_qops = {
        .queue_setup     = vpe_queue_setup,
        .buf_prepare     = vpe_buf_prepare,
        .buf_queue       = vpe_buf_queue,
 
        }
 }
 
-static struct vb2_ops vim2m_qops = {
+static const struct vb2_ops vim2m_qops = {
        .queue_setup     = vim2m_queue_setup,
        .buf_prepare     = vim2m_buf_prepare,
        .buf_queue       = vim2m_buf_queue,
 
        spin_unlock_irq(&dma->queued_lock);
 }
 
-static struct vb2_ops xvip_dma_queue_qops = {
+static const struct vb2_ops xvip_dma_queue_qops = {
        .queue_setup = xvip_dma_queue_setup,
        .buf_prepare = xvip_dma_buffer_prepare,
        .buf_queue = xvip_dma_buffer_queue,