From e3aa745ff9f6326e495c3f9c6095120b7c417a21 Mon Sep 17 00:00:00 2001 From: Zenghui Yu Date: Mon, 3 Aug 2020 11:33:43 +0800 Subject: driver core: Use the ktime_us_delta() helper Use the ktime_us_delta() helper to measure the driver probe time. Given the helpers already returns an s64 value, let's drop the unnecessary casting to s64 as well. There is no functional change. Signed-off-by: Zenghui Yu Link: https://lore.kernel.org/r/20200803033343.1178-1-yuzenghui@huawei.com Signed-off-by: Greg Kroah-Hartman --- drivers/base/dd.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) (limited to 'drivers/base') diff --git a/drivers/base/dd.c b/drivers/base/dd.c index 857b0a928e8d..6e7319ca5bde 100644 --- a/drivers/base/dd.c +++ b/drivers/base/dd.c @@ -658,15 +658,14 @@ done: */ static int really_probe_debug(struct device *dev, struct device_driver *drv) { - ktime_t calltime, delta, rettime; + ktime_t calltime, rettime; int ret; calltime = ktime_get(); ret = really_probe(dev, drv); rettime = ktime_get(); - delta = ktime_sub(rettime, calltime); pr_debug("probe of %s returned %d after %lld usecs\n", - dev_name(dev), ret, (s64) ktime_to_us(delta)); + dev_name(dev), ret, ktime_us_delta(rettime, calltime)); return ret; } -- cgit v1.2.3