diff options
| author | Zenghui Yu <yuzenghui@huawei.com> | 2020-08-03 11:33:43 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-09-08 13:32:06 +0200 |
| commit | e3aa745ff9f6326e495c3f9c6095120b7c417a21 (patch) | |
| tree | e89dc59675b382a4f9c53eb311e1cb0062061627 /drivers/base/dd.c | |
| parent | 18efb2f9e897ac65e7a1b2892f4a53e404534eba (diff) | |
| download | lwn-e3aa745ff9f6326e495c3f9c6095120b7c417a21.tar.gz lwn-e3aa745ff9f6326e495c3f9c6095120b7c417a21.zip | |
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 <yuzenghui@huawei.com>
Link: https://lore.kernel.org/r/20200803033343.1178-1-yuzenghui@huawei.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/base/dd.c')
| -rw-r--r-- | drivers/base/dd.c | 5 |
1 files changed, 2 insertions, 3 deletions
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; } |