include/net/page_pool/helpers.h:93: warning: No description found for return value of 'page_pool_dev_alloc_pages'
include/net/page_pool/helpers.h:220: warning: No description found for return value of 'page_pool_get_dma_dir'
include/net/page_pool/helpers.h:427: warning: No description found for return value of 'page_pool_get_dma_addr'
include/net/page_pool/helpers.h:93: warning: No description found for return value of 'page_pool_dev_alloc_pages'
include/net/page_pool/helpers.h:220: warning: No description found for return value of 'page_pool_get_dma_dir'
include/net/page_pool/helpers.h:427: warning: No description found for return value of 'page_pool_get_dma_addr'