include/net/page_pool/helpers.h:94: warning: No description found for return value of 'page_pool_dev_alloc_pages'
include/net/page_pool/helpers.h:218: warning: No description found for return value of 'page_pool_get_dma_dir'
include/net/page_pool/helpers.h:425: warning: No description found for return value of 'page_pool_get_dma_addr'
include/net/page_pool/helpers.h:94: warning: No description found for return value of 'page_pool_dev_alloc_pages'
include/net/page_pool/helpers.h:218: warning: No description found for return value of 'page_pool_get_dma_dir'
include/net/page_pool/helpers.h:442: warning: No description found for return value of 'page_pool_get_dma_addr'