WARNING: line length of 84 exceeds 80 columns
#194: FILE: drivers/ptp/ptp_s390.c:63:
+					 struct system_counterval_t *system_counter,

WARNING: line length of 97 exceeds 80 columns
#211: FILE: drivers/ptp/ptp_s390.c:80:
+	return get_device_system_crosststamp(s390_arch_ptp_get_crosststamp, NULL, NULL, xtstamp);

total: 0 errors, 2 warnings, 0 checks, 196 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 5e9c09d5148e ("s390/time: Add PtP driver") 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, 2 warnings, 0 checks, 196 lines checked