WARNING: line length of 81 exceeds 80 columns
#87: FILE: drivers/net/virtio_net.c:480:
+static void page_chain_unmap(struct receive_queue *rq, struct page *p, bool sync)

WARNING: line length of 89 exceeds 80 columns
#102: FILE: drivers/net/virtio_net.c:495:
+	addr = virtqueue_dma_map_page_attrs(rq->vq, p, 0, PAGE_SIZE, DMA_FROM_DEVICE, 0);

total: 0 errors, 2 warnings, 0 checks, 196 lines checked

NOTE: For some of the reported defects, checkpatch may be able to
      mechanically convert to the typical style using --fix or --fix-inplace.

Commit 832871254bbb ("virtio_net: big mode support premapped") has style problems, please review.

NOTE: Ignored message types: ALLOC_SIZEOF_STRUCT BAD_REPORTED_BY_LINK CAMELCASE COMMIT_LOG_LONG_LINE GIT_COMMIT_ID MACRO_ARG_REUSE NO_AUTHOR_SIGN_OFF

NOTE: If any of the errors are false positives, please report
      them to the maintainer, see CHECKPATCH in MAINTAINERS.
total: 0 errors, 2 warnings, 0 checks, 196 lines checked