WARNING: line length of 90 exceeds 80 columns
#83: FILE: include/linux/tcp.h:274:
+	u32	rcv_mwnd_seq; /* Maximum window sequence number (RFC 7323, section 2.4) */

CHECK: No space is necessary after a cast
#105: FILE: include/net/tcp.h:925:
+	return (u32) win;

CHECK: Please don't use multiple blank lines
#108: FILE: include/net/tcp.h:928:
+
+

total: 0 errors, 1 warnings, 2 checks, 116 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 85cd11ff8b95 ("tcp: implement RFC 7323 window retraction receiver requirements") 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, 1 warnings, 2 checks, 116 lines checked