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

CHECK: Prefer kernel type 'u64' over 'uint64_t'
#122: FILE: drivers/ptp/ptp_vmclock.c:53:
+static inline uint64_t mul_u64_u64_shr_add_u64(uint64_t *res_hi, uint64_t delta,

CHECK: Prefer kernel type 'u64' over 'uint64_t'
#123: FILE: drivers/ptp/ptp_vmclock.c:54:
+					       uint64_t period, uint8_t shift,

CHECK: Prefer kernel type 'u64' over 'uint64_t'
#141: FILE: drivers/ptp/ptp_vmclock.c:72:
+	uint64_t cycle, delta, seq, frac_sec;

WARNING: memory barrier without comment
#154: FILE: drivers/ptp/ptp_vmclock.c:85:
+		virt_rmb();

CHECK: braces {} should be used on all arms of this statement
#173: FILE: drivers/ptp/ptp_vmclock.c:104:
+		if (sts) {
[...]
+		} else
[...]

CHECK: Unbalanced braces around else statement
#181: FILE: drivers/ptp/ptp_vmclock.c:112:
+		} else

WARNING: line length of 84 exceeds 80 columns
#187: FILE: drivers/ptp/ptp_vmclock.c:118:
+						   st->clk->counter_period_frac_sec,

WARNING: line length of 81 exceeds 80 columns
#188: FILE: drivers/ptp/ptp_vmclock.c:119:
+						   st->clk->counter_period_shift,

WARNING: memory barrier without comment
#193: FILE: drivers/ptp/ptp_vmclock.c:124:
+		virt_rmb();

WARNING: line length of 87 exceeds 80 columns
#223: FILE: drivers/ptp/ptp_vmclock.c:154:
+					    struct system_counterval_t *system_counter,

WARNING: Prefer 'unsigned int' to bare use of 'unsigned'
#227: FILE: drivers/ptp/ptp_vmclock.c:158:
+	unsigned pvti_ver;

WARNING: line length of 87 exceeds 80 columns
#240: FILE: drivers/ptp/ptp_vmclock.c:171:
+							       system_counter->cycles);

CHECK: Please don't use multiple blank lines
#282: FILE: drivers/ptp/ptp_vmclock.c:213:
+
+

WARNING: Missing a blank line after declarations
#298: FILE: drivers/ptp/ptp_vmclock.c:229:
+		struct system_time_snapshot systime_snapshot;
+		ktime_get_snapshot(&systime_snapshot);

WARNING: line length of 84 exceeds 80 columns
#303: FILE: drivers/ptp/ptp_vmclock.c:234:
+			ret = get_device_system_crosststamp(ptp_vmclock_get_time_fn,

CHECK: Alignment should match open parenthesis
#326: FILE: drivers/ptp/ptp_vmclock.c:257:
+static int ptp_vmclock_settime(struct ptp_clock_info *ptp,
+			   const struct timespec64 *ts)

WARNING: line length of 81 exceeds 80 columns
#331: FILE: drivers/ptp/ptp_vmclock.c:262:
+static int ptp_vmclock_gettime(struct ptp_clock_info *ptp, struct timespec64 *ts)

WARNING: line length of 82 exceeds 80 columns
#339: FILE: drivers/ptp/ptp_vmclock.c:270:
+static int ptp_vmclock_gettimex(struct ptp_clock_info *ptp, struct timespec64 *ts,

CHECK: Alignment should match open parenthesis
#349: FILE: drivers/ptp/ptp_vmclock.c:280:
+static int ptp_vmclock_enable(struct ptp_clock_info *ptp,
+			  struct ptp_clock_request *rq, int on)

CHECK: spaces preferred around that '|' (ctx:VxV)
#374: FILE: drivers/ptp/ptp_vmclock.c:305:
+	if ((vma->vm_flags & (VM_READ|VM_WRITE)) != VM_READ)
 	                             ^

ERROR: code indent should use tabs where possible
#380: FILE: drivers/ptp/ptp_vmclock.c:311:
+        if (io_remap_pfn_range(vma, vma->vm_start,$

WARNING: please, no spaces at the start of a line
#380: FILE: drivers/ptp/ptp_vmclock.c:311:
+        if (io_remap_pfn_range(vma, vma->vm_start,$

ERROR: code indent should use tabs where possible
#382: FILE: drivers/ptp/ptp_vmclock.c:313:
+                               vma->vm_page_prot))$

WARNING: please, no spaces at the start of a line
#382: FILE: drivers/ptp/ptp_vmclock.c:313:
+                               vma->vm_page_prot))$

ERROR: code indent should use tabs where possible
#383: FILE: drivers/ptp/ptp_vmclock.c:314:
+                return -EAGAIN;$

WARNING: please, no spaces at the start of a line
#383: FILE: drivers/ptp/ptp_vmclock.c:314:
+                return -EAGAIN;$

ERROR: code indent should use tabs where possible
#385: FILE: drivers/ptp/ptp_vmclock.c:316:
+        return 0;$

WARNING: please, no spaces at the start of a line
#385: FILE: drivers/ptp/ptp_vmclock.c:316:
+        return 0;$

CHECK: Prefer kernel type 's32' over 'int32_t'
#395: FILE: drivers/ptp/ptp_vmclock.c:326:
+	int32_t seq;

WARNING: memory barrier without comment
#406: FILE: drivers/ptp/ptp_vmclock.c:337:
+		virt_rmb();

WARNING: memory barrier without comment
#411: FILE: drivers/ptp/ptp_vmclock.c:342:
+		virt_rmb();

ERROR: code indent should use tabs where possible
#424: FILE: drivers/ptp/ptp_vmclock.c:355:
+        .mmap = vmclock_miscdev_mmap,$

WARNING: please, no spaces at the start of a line
#424: FILE: drivers/ptp/ptp_vmclock.c:355:
+        .mmap = vmclock_miscdev_mmap,$

ERROR: code indent should use tabs where possible
#425: FILE: drivers/ptp/ptp_vmclock.c:356:
+        .read = vmclock_miscdev_read,$

WARNING: please, no spaces at the start of a line
#425: FILE: drivers/ptp/ptp_vmclock.c:356:
+        .read = vmclock_miscdev_read,$

WARNING: space prohibited between function name and open parenthesis '('
#479: FILE: drivers/ptp/ptp_vmclock.c:410:
+	st = devm_kzalloc(dev, sizeof (*st), GFP_KERNEL);

ERROR: code indent should use tabs where possible
#525: FILE: drivers/ptp/ptp_vmclock.c:456:
+        ret = devm_add_action_or_reset(&pdev->dev, vmclock_put_idx, st);$

WARNING: please, no spaces at the start of a line
#525: FILE: drivers/ptp/ptp_vmclock.c:456:
+        ret = devm_add_action_or_reset(&pdev->dev, vmclock_put_idx, st);$

WARNING: line length of 82 exceeds 80 columns
#529: FILE: drivers/ptp/ptp_vmclock.c:460:
+	st->name = devm_kasprintf(&pdev->dev, GFP_KERNEL, "vmclock%d", st->index);

WARNING: line length of 92 exceeds 80 columns
#549: FILE: drivers/ptp/ptp_vmclock.c:480:
+		strncpy(st->ptp_clock_info.name, st->name, sizeof(st->ptp_clock_info.name));

WARNING: Prefer strscpy, strscpy_pad, or __nonstring over strncpy - see: https://github.com/KSPP/linux/issues/90
#549: FILE: drivers/ptp/ptp_vmclock.c:480:
+		strncpy(st->ptp_clock_info.name, st->name, sizeof(st->ptp_clock_info.name));

WARNING: Prefer "GPL" over "GPL v2" - see commit bf7fbeeae6db ("module: Cure the MODULE_LICENSE "GPL" vs. "GPL v2" bogosity")
#585: FILE: drivers/ptp/ptp_vmclock.c:516:
+MODULE_LICENSE("GPL v2");

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

total: 7 errors, 27 warnings, 10 checks, 680 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 a773976580e3 ("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.