From: Mark-PK Tsai <mark-pk.tsai@mediatek.com>
Date: Thu, 1 Jul 2021 00:45:38 +0000 (+0800)
Subject: PM: sleep: Use ktime_us_delta() in initcall_debug_report()
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=75674eb06a28816af2a7331dcee4088cc1ab5f6d;p=linux.git

PM: sleep: Use ktime_us_delta() in initcall_debug_report()

Use ktime_us_delta() to make the debug log more precise instead of
shifting the return value of ktime_to_ns() applied to a ktime_sub()
result by 10 bit positions to the right.

Signed-off-by: Mark-PK Tsai <mark-pk.tsai@mediatek.com>
[ rjw: Changelog rewrite, subject edits ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
---

diff --git a/drivers/base/power/main.c b/drivers/base/power/main.c
index f893c3c5af07b..d568772152c2d 100644
--- a/drivers/base/power/main.c
+++ b/drivers/base/power/main.c
@@ -220,16 +220,13 @@ static void initcall_debug_report(struct device *dev, ktime_t calltime,
 				  void *cb, int error)
 {
 	ktime_t rettime;
-	s64 nsecs;
 
 	if (!pm_print_times_enabled)
 		return;
 
 	rettime = ktime_get();
-	nsecs = (s64) ktime_to_ns(ktime_sub(rettime, calltime));
-
 	dev_info(dev, "%pS returned %d after %Ld usecs\n", cb, error,
-		 (unsigned long long)nsecs >> 10);
+		 (unsigned long long)ktime_us_delta(rettime, calltime));
 }
 
 /**