CHECK: Please don't use multiple blank lines
#280: FILE: net/core/net-procfs.c:173:
 
+

WARNING: line length of 83 exceeds 80 columns
#387: FILE: net/core/net-procfs.c:305:
+	if ((!pt->af_packet_net || net_eq(pt->af_packet_net, seq_file_net(seq))) &&

CHECK: Alignment should match open parenthesis
#388: FILE: net/core/net-procfs.c:306:
+	if ((!pt->af_packet_net || net_eq(pt->af_packet_net, seq_file_net(seq))) &&
+		 (!dev || net_eq(dev_net(dev), seq_file_net(seq)))) {

WARNING: line length of 84 exceeds 80 columns
#508: FILE: net/packet/af_packet.c:4215:
+					netdev_put(dev, &po->prot_hook.dev_tracker);

WARNING: line length of 84 exceeds 80 columns
#509: FILE: net/packet/af_packet.c:4216:
+					rcu_assign_pointer(po->prot_hook.dev, NULL);

total: 0 errors, 3 warnings, 2 checks, 408 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 c7c820420fea ("net: add RCU protection to (struct packet_type)->dev") has style problems, please review.

NOTE: Ignored message types: ALLOC_SIZEOF_STRUCT BAD_REPORTED_BY_LINK CAMELCASE COMMIT_LOG_LONG_LINE FILE_PATH_CHANGES 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, 3 warnings, 2 checks, 408 lines checked