struct dma_buf *dmabuf;
struct dma_buf_sync sync;
enum dma_data_direction direction;
+ int ret;
dmabuf = file->private_data;
}
if (sync.flags & DMA_BUF_SYNC_END)
- dma_buf_end_cpu_access(dmabuf, direction);
+ ret = dma_buf_end_cpu_access(dmabuf, direction);
else
- dma_buf_begin_cpu_access(dmabuf, direction);
+ ret = dma_buf_begin_cpu_access(dmabuf, direction);
- return 0;
+ return ret;
default:
return -ENOTTY;
}
* @dmabuf: [in] buffer to complete cpu access for.
* @direction: [in] length of range for cpu access.
*
- * This call must always succeed.
+ * Can return negative error values, returns 0 on success.
*/
-void dma_buf_end_cpu_access(struct dma_buf *dmabuf,
- enum dma_data_direction direction)
+int dma_buf_end_cpu_access(struct dma_buf *dmabuf,
+ enum dma_data_direction direction)
{
+ int ret = 0;
+
WARN_ON(!dmabuf);
if (dmabuf->ops->end_cpu_access)
- dmabuf->ops->end_cpu_access(dmabuf, direction);
+ ret = dmabuf->ops->end_cpu_access(dmabuf, direction);
+
+ return ret;
}
EXPORT_SYMBOL_GPL(dma_buf_end_cpu_access);