CHECK: Macro argument 'name' may be better as '(name)' to avoid precedence issues
#712: FILE: drivers/ptp/ptp_cipu.c:634:
+#define REG_ATTR_RO(name) \
+static ssize_t reg_##name##_show(struct device *dev, \
+				 struct device_attribute *attr, char *buf) \
+{ \
+	struct ptp_cipu_ctx *ctx = pci_get_drvdata(to_pci_dev(dev)); \
+	struct ptp_cipu_regs *regs = &ctx->regs; \
+	return sysfs_emit(buf, "0x%x\n", regs->name); \
+} \
+static DEVICE_ATTR_RO(reg_##name)

CHECK: Macro argument 'events' may be better as '(events)' to avoid precedence issues
#735: FILE: drivers/ptp/ptp_cipu.c:657:
+#define STATS_ATTR_RO(name, events, index) \
+static ssize_t name##_show(struct device *dev, \
+			   struct device_attribute *attr, char *buf) \
+{ \
+	struct ptp_cipu_ctx *ctx = pci_get_drvdata(to_pci_dev(dev)); \
+	struct ptp_cipu_stats *stats; \
+	u64 sum = 0; \
+	int cpu; \
+	for_each_possible_cpu(cpu) { \
+		stats = per_cpu_ptr(ctx->stats, cpu); \
+		sum += stats->events[index]; \
+	} \
+	return sysfs_emit(buf, "0x%llx\n", sum); \
+} \
+static DEVICE_ATTR_RO(name)

total: 0 errors, 0 warnings, 2 checks, 981 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 f37185bdd393 ("ptp: add Alibaba CIPU PTP clock 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, 0 warnings, 2 checks, 981 lines checked