struct fimd_context {
        struct device                   *dev;
        struct drm_device               *drm_dev;
-       int                             irq;
-       struct drm_crtc                 *crtc;
        struct clk                      *bus_clk;
        struct clk                      *lcd_clk;
        void __iomem                    *regs;
        u32                             vidcon1;
        bool                            suspended;
        int                             pipe;
-       struct mutex                    lock;
        wait_queue_head_t               wait_vsync_queue;
        atomic_t                        wait_vsync_event;
 
 
        DRM_DEBUG_KMS("%d\n", mode);
 
-       mutex_lock(&ctx->lock);
-
        switch (mode) {
        case DRM_MODE_DPMS_ON:
                /*
                DRM_DEBUG_KMS("unspecified mode %d\n", mode);
                break;
        }
-
-       mutex_unlock(&ctx->lock);
 }
 
 static struct exynos_drm_manager_ops fimd_manager_ops = {
                return -ENXIO;
        }
 
-       ctx->irq = res->start;
-
-       ret = devm_request_irq(dev, ctx->irq, fimd_irq_handler,
+       ret = devm_request_irq(dev, res->start, fimd_irq_handler,
                                                        0, "drm_fimd", ctx);
        if (ret) {
                dev_err(dev, "irq request failed.\n");
        init_waitqueue_head(&ctx->wait_vsync_queue);
        atomic_set(&ctx->wait_vsync_event, 0);
 
-       mutex_init(&ctx->lock);
-
        platform_set_drvdata(pdev, &fimd_manager);
 
        fimd_manager.ctx = ctx;