drm/exynos/ipp: move nodes cleaning to separate function

The patch introduces ipp_clean_mem_nodes function which replaces
redundant code. Additionally memory node function definitions
are moved up to increase its visibility.

Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Reviewed-by: Joonyoung Shim <jy0922.shim@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>

drivers/gpu/drm/exynos/exynos_drm_ipp.c

@@ -498,6 +498,108 @@ err_clear:
 	return ret;
 }
 
+static int ipp_put_mem_node(struct drm_device *drm_dev,
+		struct drm_exynos_ipp_cmd_node *c_node,
+		struct drm_exynos_ipp_mem_node *m_node)
+{
+	int i;
+
+	DRM_DEBUG_KMS("node[0x%x]\n", (int)m_node);
+
+	if (!m_node) {
+		DRM_ERROR("invalid dequeue node.\n");
+		return -EFAULT;
+	}
+
+	DRM_DEBUG_KMS("ops_id[%d]\n", m_node->ops_id);
+
+	/* put gem buffer */
+	for_each_ipp_planar(i) {
+		unsigned long handle = m_node->buf_info.handles[i];
+		if (handle)
+			exynos_drm_gem_put_dma_addr(drm_dev, handle,
+							c_node->filp);
+	}
+
+	list_del(&m_node->list);
+	kfree(m_node);
+
+	return 0;
+}
+
+static struct drm_exynos_ipp_mem_node
+		*ipp_get_mem_node(struct drm_device *drm_dev,
+		struct drm_file *file,
+		struct drm_exynos_ipp_cmd_node *c_node,
+		struct drm_exynos_ipp_queue_buf *qbuf)
+{
+	struct drm_exynos_ipp_mem_node *m_node;
+	struct drm_exynos_ipp_buf_info *buf_info;
+	int i;
+
+	m_node = kzalloc(sizeof(*m_node), GFP_KERNEL);
+	if (!m_node)
+		return ERR_PTR(-ENOMEM);
+
+	buf_info = &m_node->buf_info;
+
+	/* operations, buffer id */
+	m_node->ops_id = qbuf->ops_id;
+	m_node->prop_id = qbuf->prop_id;
+	m_node->buf_id = qbuf->buf_id;
+	INIT_LIST_HEAD(&m_node->list);
+
+	DRM_DEBUG_KMS("m_node[0x%x]ops_id[%d]\n", (int)m_node, qbuf->ops_id);
+	DRM_DEBUG_KMS("prop_id[%d]buf_id[%d]\n", qbuf->prop_id, m_node->buf_id);
+
+	for_each_ipp_planar(i) {
+		DRM_DEBUG_KMS("i[%d]handle[0x%x]\n", i, qbuf->handle[i]);
+
+		/* get dma address by handle */
+		if (qbuf->handle[i]) {
+			dma_addr_t *addr;
+
+			addr = exynos_drm_gem_get_dma_addr(drm_dev,
+					qbuf->handle[i], file);
+			if (IS_ERR(addr)) {
+				DRM_ERROR("failed to get addr.\n");
+				ipp_put_mem_node(drm_dev, c_node, m_node);
+				return ERR_PTR(-EFAULT);
+			}
+
+			buf_info->handles[i] = qbuf->handle[i];
+			buf_info->base[i] = *addr;
+			DRM_DEBUG_KMS("i[%d]base[0x%x]hd[0x%lx]\n", i,
+				      buf_info->base[i], buf_info->handles[i]);
+		}
+	}
+
+	mutex_lock(&c_node->mem_lock);
+	list_add_tail(&m_node->list, &c_node->mem_list[qbuf->ops_id]);
+	mutex_unlock(&c_node->mem_lock);
+
+	return m_node;
+}
+
+static void ipp_clean_mem_nodes(struct drm_device *drm_dev,
+			       struct drm_exynos_ipp_cmd_node *c_node, int ops)
+{
+	struct drm_exynos_ipp_mem_node *m_node, *tm_node;
+	struct list_head *head = &c_node->mem_list[ops];
+
+	mutex_lock(&c_node->mem_lock);
+
+	list_for_each_entry_safe(m_node, tm_node, head, list) {
+		int ret;
+
+		ret = ipp_put_mem_node(drm_dev, c_node, m_node);
+		if (ret)
+			DRM_ERROR("failed to put m_node.\n");
+	}
+
+	mutex_unlock(&c_node->mem_lock);
+}
+
 static void ipp_clean_cmd_node(struct ipp_context *ctx,
 				struct drm_exynos_ipp_cmd_node *c_node)
 {
@@ -599,89 +701,6 @@ static int ipp_set_mem_node(struct exynos_drm_ippdrv *ippdrv,
 	return ret;
 }
 
-static int ipp_put_mem_node(struct drm_device *drm_dev,
-		struct drm_exynos_ipp_cmd_node *c_node,
-		struct drm_exynos_ipp_mem_node *m_node)
-{
-	int i;
-
-	DRM_DEBUG_KMS("node[0x%x]\n", (int)m_node);
-
-	if (!m_node) {
-		DRM_ERROR("invalid dequeue node.\n");
-		return -EFAULT;
-	}
-
-	DRM_DEBUG_KMS("ops_id[%d]\n", m_node->ops_id);
-
-	/* put gem buffer */
-	for_each_ipp_planar(i) {
-		unsigned long handle = m_node->buf_info.handles[i];
-		if (handle)
-			exynos_drm_gem_put_dma_addr(drm_dev, handle,
-							c_node->filp);
-	}
-
-	list_del(&m_node->list);
-	kfree(m_node);
-
-	return 0;
-}
-
-static struct drm_exynos_ipp_mem_node
-		*ipp_get_mem_node(struct drm_device *drm_dev,
-		struct drm_file *file,
-		struct drm_exynos_ipp_cmd_node *c_node,
-		struct drm_exynos_ipp_queue_buf *qbuf)
-{
-	struct drm_exynos_ipp_mem_node *m_node;
-	struct drm_exynos_ipp_buf_info *buf_info;
-	int i;
-
-	m_node = kzalloc(sizeof(*m_node), GFP_KERNEL);
-	if (!m_node)
-		return ERR_PTR(-ENOMEM);
-
-	buf_info = &m_node->buf_info;
-
-	/* operations, buffer id */
-	m_node->ops_id = qbuf->ops_id;
-	m_node->prop_id = qbuf->prop_id;
-	m_node->buf_id = qbuf->buf_id;
-	INIT_LIST_HEAD(&m_node->list);
-
-	DRM_DEBUG_KMS("m_node[0x%x]ops_id[%d]\n", (int)m_node, qbuf->ops_id);
-	DRM_DEBUG_KMS("prop_id[%d]buf_id[%d]\n", qbuf->prop_id, m_node->buf_id);
-
-	for_each_ipp_planar(i) {
-		DRM_DEBUG_KMS("i[%d]handle[0x%x]\n", i, qbuf->handle[i]);
-
-		/* get dma address by handle */
-		if (qbuf->handle[i]) {
-			dma_addr_t *addr;
-
-			addr = exynos_drm_gem_get_dma_addr(drm_dev,
-					qbuf->handle[i], file);
-			if (IS_ERR(addr)) {
-				DRM_ERROR("failed to get addr.\n");
-				ipp_put_mem_node(drm_dev, c_node, m_node);
-				return ERR_PTR(-EFAULT);
-			}
-
-			buf_info->handles[i] = qbuf->handle[i];
-			buf_info->base[i] = *addr;
-			DRM_DEBUG_KMS("i[%d]base[0x%x]hd[0x%lx]\n", i,
-				      buf_info->base[i], buf_info->handles[i]);
-		}
-	}
-
-	mutex_lock(&c_node->mem_lock);
-	list_add_tail(&m_node->list, &c_node->mem_list[qbuf->ops_id]);
-	mutex_unlock(&c_node->mem_lock);
-
-	return m_node;
-}
-
 static void ipp_free_event(struct drm_pending_event *event)
 {
 	kfree(event);
@@ -1257,9 +1276,7 @@ static int ipp_stop_property(struct drm_device *drm_dev,
 		struct exynos_drm_ippdrv *ippdrv,
 		struct drm_exynos_ipp_cmd_node *c_node)
 {
-	struct drm_exynos_ipp_mem_node *m_node, *tm_node;
 	struct drm_exynos_ipp_property *property = &c_node->property;
-	struct list_head *head;
 	int ret = 0, i;
 
 	DRM_DEBUG_KMS("prop_id[%d]\n", property->prop_id);
@@ -1267,49 +1284,17 @@ static int ipp_stop_property(struct drm_device *drm_dev,
 	/* put event */
 	ipp_put_event(c_node, NULL);
 
-	mutex_lock(&c_node->mem_lock);
-
 	/* check command */
 	switch (property->cmd) {
 	case IPP_CMD_M2M:
-		for_each_ipp_ops(i) {
-			/* source/destination memory list */
-			head = &c_node->mem_list[i];
-
-			list_for_each_entry_safe(m_node, tm_node,
-				head, list) {
-				ret = ipp_put_mem_node(drm_dev, c_node,
-					m_node);
-				if (ret) {
-					DRM_ERROR("failed to put m_node.\n");
-					goto err_clear;
-				}
-			}
-		}
+		for_each_ipp_ops(i)
+			ipp_clean_mem_nodes(drm_dev, c_node, i);
 		break;
 	case IPP_CMD_WB:
-		/* destination memory list */
-		head = &c_node->mem_list[EXYNOS_DRM_OPS_DST];
-
-		list_for_each_entry_safe(m_node, tm_node, head, list) {
-			ret = ipp_put_mem_node(drm_dev, c_node, m_node);
-			if (ret) {
-				DRM_ERROR("failed to put m_node.\n");
-				goto err_clear;
-			}
-		}
+		ipp_clean_mem_nodes(drm_dev, c_node, EXYNOS_DRM_OPS_DST);
 		break;
 	case IPP_CMD_OUTPUT:
-		/* source memory list */
-		head = &c_node->mem_list[EXYNOS_DRM_OPS_SRC];
-
-		list_for_each_entry_safe(m_node, tm_node, head, list) {
-			ret = ipp_put_mem_node(drm_dev, c_node, m_node);
-			if (ret) {
-				DRM_ERROR("failed to put m_node.\n");
-				goto err_clear;
-			}
-		}
+		ipp_clean_mem_nodes(drm_dev, c_node, EXYNOS_DRM_OPS_SRC);
 		break;
 	default:
 		DRM_ERROR("invalid operations.\n");
@@ -1318,8 +1303,6 @@ static int ipp_stop_property(struct drm_device *drm_dev,
 	}
 
 err_clear:
-	mutex_unlock(&c_node->mem_lock);
-
 	/* stop operations */
 	if (ippdrv->stop)
 		ippdrv->stop(ippdrv->dev, property->cmd);