WARNING: line length of 87 exceeds 80 columns
#102: FILE: net/l2tp/l2tp_core.c:327:
+			list_for_each_entry_rcu(session, &tunnel->session_list, list) {

WARNING: line length of 85 exceeds 80 columns
#285: FILE: net/l2tp/l2tp_core.h:117:
+	 * The callback is called by core after unlisting the session and purging its

WARNING: line length of 87 exceeds 80 columns
#303: FILE: net/l2tp/l2tp_core.h:163:
+	spinlock_t		list_lock;	/* write-protection for session_list */

WARNING: line length of 88 exceeds 80 columns
#306: FILE: net/l2tp/l2tp_core.h:165:
+						 * new sessions. Protected by list_lock.

WARNING: line length of 83 exceeds 80 columns
#331: FILE: net/l2tp/l2tp_debugfs.c:129:
+		/* Session ID of zero is a dummy/reserved value used by pppol2tp */

total: 0 errors, 5 warnings, 0 checks, 286 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 609c1820c119 ("l2tp: replace hlist with simple list for per-tunnel session list") 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, 5 warnings, 0 checks, 286 lines checked