WARNING: added, moved or deleted file(s), does MAINTAINERS need updating?
#65: 
new file mode 100644

ERROR: Macros with complex values should be enclosed in parentheses
#123: FILE: drivers/ptp/ptp_vmclock.c:54:
+#define VMCLOCK_FIELD_PRESENT(_c, _f)			  \
+	(_c)->size >= (offsetof(struct vmclock_abi, _f) + \
+		       sizeof((_c)->_f))

CHECK: Prefer kernel type 'u64' over 'uint64_t'
#137: FILE: drivers/ptp/ptp_vmclock.c:68:
+static uint64_t mul_u64_u64_shr_add_u64(uint64_t *res_hi, uint64_t delta,

CHECK: Prefer kernel type 'u64' over 'uint64_t'
#138: FILE: drivers/ptp/ptp_vmclock.c:69:
+					uint64_t period, uint8_t shift,

CHECK: Prefer kernel type 'u64' over 'uint64_t'
#170: FILE: drivers/ptp/ptp_vmclock.c:101:
+	uint64_t cycle, delta, seq, frac_sec;

WARNING: line length of 84 exceeds 80 columns
#222: FILE: drivers/ptp/ptp_vmclock.c:153:
+						   st->clk->counter_period_frac_sec,

WARNING: line length of 81 exceeds 80 columns
#223: FILE: drivers/ptp/ptp_vmclock.c:154:
+						   st->clk->counter_period_shift,

WARNING: memory barrier without comment
#231: FILE: drivers/ptp/ptp_vmclock.c:162:
+		virt_rmb();

WARNING: line length of 87 exceeds 80 columns
#261: FILE: drivers/ptp/ptp_vmclock.c:192:
+					    struct system_counterval_t *system_counter,

WARNING: Prefer 'unsigned int' to bare use of 'unsigned'
#265: FILE: drivers/ptp/ptp_vmclock.c:196:
+	unsigned pvti_ver;

WARNING: line length of 87 exceeds 80 columns
#278: FILE: drivers/ptp/ptp_vmclock.c:209:
+							       system_counter->cycles);

WARNING: Missing a blank line after declarations
#335: FILE: drivers/ptp/ptp_vmclock.c:266:
+		struct system_time_snapshot systime_snapshot;
+		ktime_get_snapshot(&systime_snapshot);

WARNING: line length of 84 exceeds 80 columns
#340: FILE: drivers/ptp/ptp_vmclock.c:271:
+			ret = get_device_system_crosststamp(ptp_vmclock_get_time_fn,

CHECK: Alignment should match open parenthesis
#363: FILE: drivers/ptp/ptp_vmclock.c:294:
+static int ptp_vmclock_settime(struct ptp_clock_info *ptp,
+			   const struct timespec64 *ts)

WARNING: line length of 82 exceeds 80 columns
#368: FILE: drivers/ptp/ptp_vmclock.c:299:
+static int ptp_vmclock_gettimex(struct ptp_clock_info *ptp, struct timespec64 *ts,

CHECK: Alignment should match open parenthesis
#378: FILE: drivers/ptp/ptp_vmclock.c:309:
+static int ptp_vmclock_enable(struct ptp_clock_info *ptp,
+			  struct ptp_clock_request *rq, int on)

CHECK: multiple assignments should be avoided
#419: FILE: drivers/ptp/ptp_vmclock.c:350:
+	st->sys_cs_id = st->cs_id = cs_id;

CHECK: spaces preferred around that '|' (ctx:VxV)
#431: FILE: drivers/ptp/ptp_vmclock.c:362:
+	if ((vma->vm_flags & (VM_READ|VM_WRITE)) != VM_READ)
 	                             ^

ERROR: code indent should use tabs where possible
#437: FILE: drivers/ptp/ptp_vmclock.c:368:
+        if (io_remap_pfn_range(vma, vma->vm_start,$

WARNING: please, no spaces at the start of a line
#437: FILE: drivers/ptp/ptp_vmclock.c:368:
+        if (io_remap_pfn_range(vma, vma->vm_start,$

ERROR: code indent should use tabs where possible
#439: FILE: drivers/ptp/ptp_vmclock.c:370:
+                               vma->vm_page_prot))$

WARNING: please, no spaces at the start of a line
#439: FILE: drivers/ptp/ptp_vmclock.c:370:
+                               vma->vm_page_prot))$

ERROR: code indent should use tabs where possible
#440: FILE: drivers/ptp/ptp_vmclock.c:371:
+                return -EAGAIN;$

WARNING: please, no spaces at the start of a line
#440: FILE: drivers/ptp/ptp_vmclock.c:371:
+                return -EAGAIN;$

ERROR: code indent should use tabs where possible
#442: FILE: drivers/ptp/ptp_vmclock.c:373:
+        return 0;$

WARNING: please, no spaces at the start of a line
#442: FILE: drivers/ptp/ptp_vmclock.c:373:
+        return 0;$

CHECK: Prefer kernel type 's32' over 'int32_t'
#452: FILE: drivers/ptp/ptp_vmclock.c:383:
+	int32_t seq;

WARNING: memory barrier without comment
#463: FILE: drivers/ptp/ptp_vmclock.c:394:
+		virt_rmb();

WARNING: memory barrier without comment
#468: FILE: drivers/ptp/ptp_vmclock.c:399:
+		virt_rmb();

ERROR: code indent should use tabs where possible
#481: FILE: drivers/ptp/ptp_vmclock.c:412:
+        .mmap = vmclock_miscdev_mmap,$

WARNING: please, no spaces at the start of a line
#481: FILE: drivers/ptp/ptp_vmclock.c:412:
+        .mmap = vmclock_miscdev_mmap,$

ERROR: code indent should use tabs where possible
#482: FILE: drivers/ptp/ptp_vmclock.c:413:
+        .read = vmclock_miscdev_read,$

WARNING: please, no spaces at the start of a line
#482: FILE: drivers/ptp/ptp_vmclock.c:413:
+        .read = vmclock_miscdev_read,$

WARNING: line length of 81 exceeds 80 columns
#499: FILE: drivers/ptp/ptp_vmclock.c:430:
+static acpi_status vmclock_acpi_resources(struct acpi_resource *ares, void *data)

CHECK: Unnecessary parentheses around win.res
#503: FILE: drivers/ptp/ptp_vmclock.c:434:
+	struct resource *res = &(win.res);

ERROR: code indent should use tabs where possible
#512: FILE: drivers/ptp/ptp_vmclock.c:443:
+        if (acpi_dev_resource_memory(ares, res) ||$

WARNING: please, no spaces at the start of a line
#512: FILE: drivers/ptp/ptp_vmclock.c:443:
+        if (acpi_dev_resource_memory(ares, res) ||$

CHECK: Blank lines aren't necessary after an open brace '{'
#514: FILE: drivers/ptp/ptp_vmclock.c:445:
+	    acpi_dev_resource_address_space(ares, &win)) {
+

WARNING: space prohibited between function name and open parenthesis '('
#562: FILE: drivers/ptp/ptp_vmclock.c:493:
+	st = devm_kzalloc(dev, sizeof (*st), GFP_KERNEL);

WARNING: line length of 82 exceeds 80 columns
#608: FILE: drivers/ptp/ptp_vmclock.c:539:
+	st->name = devm_kasprintf(&pdev->dev, GFP_KERNEL, "vmclock%d", st->index);

WARNING: Prefer "GPL" over "GPL v2" - see commit bf7fbeeae6db ("module: Cure the MODULE_LICENSE "GPL" vs. "GPL v2" bogosity")
#679: FILE: drivers/ptp/ptp_vmclock.c:610:
+MODULE_LICENSE("GPL v2");

WARNING: line length of 82 exceeds 80 columns
#686: FILE: include/uapi/linux/vmclock-abi.h:1:
+/* SPDX-License-Identifier: ((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause) */

WARNING: line length of 88 exceeds 80 columns
#763: FILE: include/uapi/linux/vmclock-abi.h:78:
+#define VMCLOCK_TIME_UTC			0	/* Since 1970-01-01 00:00:00z */

WARNING: line length of 88 exceeds 80 columns
#764: FILE: include/uapi/linux/vmclock-abi.h:79:
+#define VMCLOCK_TIME_TAI			1	/* Since 1970-01-01 00:00:00z */

WARNING: line length of 83 exceeds 80 columns
#765: FILE: include/uapi/linux/vmclock-abi.h:80:
+#define VMCLOCK_TIME_MONOTONIC			2	/* Since undefined epoch */

WARNING: Possible repeated word: 'the'
#832: FILE: include/uapi/linux/vmclock-abi.h:147:
+	 * This field is based on the the VIRTIO_RTC_LEAP_xxx values as

total: 8 errors, 28 warnings, 10 checks, 823 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.

NOTE: Whitespace errors detected.
      You may wish to use scripts/cleanpatch or scripts/cleanfile

Commit 157a5e105d69 ("ptp: Add vDSO-style vmclock support") 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.