[PATCH] driver core: Simplify async probe test code by using ktime_ms_delta()

[Mark-PK Tsai]

Simplify async probe test code by using ktime_ms_delta().

Signed-off-by: Mark-PK Tsai <mark-pk.tsai@xxxxxxxxxxxx>
---
 drivers/base/test/test_async_driver_probe.c | 14 +++++---------
 1 file changed, 5 insertions(+), 9 deletions(-)

diff --git a/drivers/base/test/test_async_driver_probe.c b/drivers/base/test/test_async_driver_probe.c
index 3bb7beb127a9..4d1976ca5072 100644
--- a/drivers/base/test/test_async_driver_probe.c
+++ b/drivers/base/test/test_async_driver_probe.c
@@ -104,7 +104,7 @@ static int __init test_async_probe_init(void)
 	struct platform_device **pdev = NULL;
 	int async_id = 0, sync_id = 0;
 	unsigned long long duration;
-	ktime_t calltime, delta;
+	ktime_t calltime;
 	int err, nid, cpu;
 
 	pr_info("registering first set of asynchronous devices...\n");
@@ -133,8 +133,7 @@ static int __init test_async_probe_init(void)
 		goto err_unregister_async_devs;
 	}
 
-	delta = ktime_sub(ktime_get(), calltime);
-	duration = (unsigned long long) ktime_to_ms(delta);
+	duration = (unsigned long long)ktime_ms_delta(ktime_get(), calltime);
 	pr_info("registration took %lld msecs\n", duration);
 	if (duration > TEST_PROBE_THRESHOLD) {
 		pr_err("test failed: probe took too long\n");
@@ -161,8 +160,7 @@ static int __init test_async_probe_init(void)
 		async_id++;
 	}
 
-	delta = ktime_sub(ktime_get(), calltime);
-	duration = (unsigned long long) ktime_to_ms(delta);
+	duration = (unsigned long long)ktime_ms_delta(ktime_get(), calltime);
 	dev_info(&(*pdev)->dev,
 		 "registration took %lld msecs\n", duration);
 	if (duration > TEST_PROBE_THRESHOLD) {
@@ -197,8 +195,7 @@ static int __init test_async_probe_init(void)
 		goto err_unregister_sync_devs;
 	}
 
-	delta = ktime_sub(ktime_get(), calltime);
-	duration = (unsigned long long) ktime_to_ms(delta);
+	duration = (unsigned long long)ktime_ms_delta(ktime_get(), calltime);
 	pr_info("registration took %lld msecs\n", duration);
 	if (duration < TEST_PROBE_THRESHOLD) {
 		dev_err(&(*pdev)->dev,
@@ -223,8 +220,7 @@ static int __init test_async_probe_init(void)
 
 	sync_id++;
 
-	delta = ktime_sub(ktime_get(), calltime);
-	duration = (unsigned long long) ktime_to_ms(delta);
+	duration = (unsigned long long)ktime_ms_delta(ktime_get(), calltime);
 	dev_info(&(*pdev)->dev,
 		 "registration took %lld msecs\n", duration);
 	if (duration < TEST_PROBE_THRESHOLD) {
-- 
2.18.0