WARNING: line length of 83 exceeds 80 columns
#158: FILE: drivers/net/dsa/yt921x.h:224:
+#define  YT921X_STP_PORTn_M(port)		GENMASK(2 * (port) + 1, 2 * (port))

WARNING: line length of 81 exceeds 80 columns
#160: FILE: drivers/net/dsa/yt921x.h:226:
+#define   YT921X_STP_PORTn_DISABLED(port)		YT921X_STP_PORTn(port, 0)

WARNING: line length of 81 exceeds 80 columns
#161: FILE: drivers/net/dsa/yt921x.h:227:
+#define   YT921X_STP_PORTn_LEARNING(port)		YT921X_STP_PORTn(port, 1)

WARNING: line length of 81 exceeds 80 columns
#162: FILE: drivers/net/dsa/yt921x.h:228:
+#define   YT921X_STP_PORTn_BLOCKING(port)		YT921X_STP_PORTn(port, 2)

WARNING: line length of 81 exceeds 80 columns
#163: FILE: drivers/net/dsa/yt921x.h:229:
+#define   YT921X_STP_PORTn_FORWARD(port)		YT921X_STP_PORTn(port, 3)

total: 0 errors, 5 warnings, 0 checks, 148 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 77b0d72ad718 ("net: dsa: yt921x: Add STP/MST support") 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, 5 warnings, 0 checks, 148 lines checked