CHECK: Prefer using the BIT macro
#47: FILE: include/linux/if_hsr.h:25:
+#define HSR_SKB_INCLUDES_HEADER		(1 << 4)

WARNING: line length of 81 exceeds 80 columns
#124: FILE: net/hsr/hsr_forward.c:386:
+		skb_shinfo(skb)->tx_flags = skb_shinfo(frame->skb_std)->tx_flags;

WARNING: line length of 82 exceeds 80 columns
#213: FILE: net/hsr/hsr_forward.c:622:
+			if ((req_port != HSR_PT_NONE) && (req_port != port->type))

CHECK: Unnecessary parentheses around 'req_port != HSR_PT_NONE'
#213: FILE: net/hsr/hsr_forward.c:622:
+			if ((req_port != HSR_PT_NONE) && (req_port != port->type))

CHECK: Unnecessary parentheses around 'req_port != port->type'
#213: FILE: net/hsr/hsr_forward.c:622:
+			if ((req_port != HSR_PT_NONE) && (req_port != port->type))

WARNING: line length of 82 exceeds 80 columns
#260: FILE: net/hsr/hsr_forward.c:799:
+					       frame->is_supervision, port->type);

WARNING: line length of 84 exceeds 80 columns
#262: FILE: net/hsr/hsr_forward.c:801:
+			return -1; /* Unknown node and !is_supervision, or no mem */

total: 0 errors, 4 warnings, 3 checks, 230 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 2723a2a0aa56 ("hsr: Allow to send a specific port and with HSR header") 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, 4 warnings, 3 checks, 230 lines checked