--- zzzz-none-000/linux-2.6.39.4/arch/arm/common/dmabounce.c	2011-08-03 19:43:28.000000000 +0000
+++ puma6-atom-6490-729/linux-2.6.39.4/arch/arm/common/dmabounce.c	2021-11-10 13:38:14.000000000 +0000
@@ -552,6 +552,16 @@
 
 	dev_info(dev, "dmabounce: device unregistered\n");
 }
+
+EXPORT_SYMBOL(dma_map_single);
+EXPORT_SYMBOL(dma_unmap_single);
+EXPORT_SYMBOL(dma_map_sg);
+EXPORT_SYMBOL(dma_unmap_sg);
+EXPORT_SYMBOL(dma_sync_single_for_cpu);
+EXPORT_SYMBOL(dma_sync_single_for_device);
+EXPORT_SYMBOL(dma_sync_sg);
+EXPORT_SYMBOL(dmabounce_register_dev);
+
 EXPORT_SYMBOL(dmabounce_unregister_dev);
 
 MODULE_AUTHOR("Christopher Hoover <ch@hpl.hp.com>, Deepak Saxena <dsaxena@plexity.net>");