linux-kernel - [PATCH v1] testptp: fix format specifier in nsec print

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Message-ID: <20230510104958.13437-1-amitbern@amazon.com>
Date:   Wed, 10 May 2023 13:49:58 +0300
From:   <amitbern@...zon.com>
To:     Shuah Khan <skhan@...uxfoundation.org>,
        <linux-kernel@...r.kernel.org>, <linux-kselftest@...r.kernel.org>
CC:     Amit Bernstein <amitbern@...zon.com>,
        "Matushevsky, Alexander" <matua@...zon.com>,
        Saeed Bshara <saeedb@...zon.com>,
        "Kiyanovski, Arthur" <akiyano@...zon.com>,
        "Dagan, Noam" <ndagan@...zon.com>,
        "Agroskin, Shay" <shayagr@...zon.com>,
        "Arinzon, David" <darinzon@...zon.com>,
        "Itzko, Shahar" <itzko@...zon.com>,
        "Abboud, Osama" <osamaabb@...zon.com>
Subject: [PATCH v1] testptp: fix format specifier in nsec print

From: Amit Bernstein <amitbern@...zon.com>

Fix printf to include leading zeros when the nsec component is less
than 9 digits to ensure correct time representation of "sec.nsec".

Signed-off-by: Amit Bernstein <amitbern@...zon.com>
---
 tools/testing/selftests/ptp/testptp.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/tools/testing/selftests/ptp/testptp.c b/tools/testing/selftests/ptp/testptp.c
index 198ad5f32..cfa9562f3 100644
--- a/tools/testing/selftests/ptp/testptp.c
+++ b/tools/testing/selftests/ptp/testptp.c
@@ -502,11 +502,11 @@ int main(int argc, char *argv[])
 			interval = t2 - t1;
 			offset = (t2 + t1) / 2 - tp;
 
-			printf("system time: %lld.%u\n",
+			printf("system time: %lld.%09u\n",
 				(pct+2*i)->sec, (pct+2*i)->nsec);
-			printf("phc    time: %lld.%u\n",
+			printf("phc    time: %lld.%09u\n",
 				(pct+2*i+1)->sec, (pct+2*i+1)->nsec);
-			printf("system time: %lld.%u\n",
+			printf("system time: %lld.%09u\n",
 				(pct+2*i+2)->sec, (pct+2*i+2)->nsec);
 			printf("system/phc clock time offset is %" PRId64 " ns\n"
 			       "system     clock time delay  is %" PRId64 " ns\n",
-- 
2.17.1