CHECK: Macro argument 'iter' may be better as '(iter)' to avoid precedence issues
#55: FILE: drivers/net/ethernet/intel/idpf/idpf.h:486:
+#define idpf_for_each_vport(adapter, iter) \
+	for (struct idpf_vport **__##iter = &(adapter)->vports[0], \
+	     *iter = (adapter)->max_vports ? *__##iter : NULL; \
+	     iter; \
+	     iter = (++__##iter) < &(adapter)->vports[(adapter)->max_vports] ? \
+	     *__##iter : NULL)

CHECK: spinlock_t definition without comment
#214: FILE: drivers/net/ethernet/intel/idpf/idpf_ptp.h:149:
+	spinlock_t latches_lock;

CHECK: spinlock_t definition without comment
#215: FILE: drivers/net/ethernet/intel/idpf/idpf_ptp.h:150:
+	spinlock_t status_lock;

total: 0 errors, 0 warnings, 3 checks, 428 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 bca81aef6b6c ("idpf: add Tx timestamp capabilities negotiation") 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, 0 warnings, 3 checks, 428 lines checked