linux-kernel - [PATCH v2 1/2] selftests: ptp: use KSFT

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Message-ID: <20260126061532.12532-1-junjie.cao@intel.com>
Date: Mon, 26 Jan 2026 14:15:31 +0800
From: Junjie Cao <junjie.cao@...el.com>
To: Shuah Khan <shuah@...nel.org>,
	Richard Cochran <richardcochran@...il.com>,
	linux-kselftest@...r.kernel.org,
	netdev@...r.kernel.org
Cc: linux-kernel@...r.kernel.org
Subject: [PATCH v2 1/2] selftests: ptp: use KSFT_SKIP exit code for skip scenarios

The kselftest framework defines KSFT_SKIP=4 as the standard exit code
for skipped tests. However, phc.sh currently uses a mix of 'exit 0' and
'exit 1' to indicate skip conditions, which can confuse test harnesses
and CI systems.

This patch introduces ksft_skip=4 variable and unifies all skip exit
paths to use 'exit $ksft_skip', consistent with other selftests like
net/lib.sh and net/fib_nexthops.sh.

Signed-off-by: Junjie Cao <junjie.cao@...el.com>
---
 tools/testing/selftests/ptp/phc.sh | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/tools/testing/selftests/ptp/phc.sh b/tools/testing/selftests/ptp/phc.sh
index ac6e5a6e1d3a..51aad466d989 100755
--- a/tools/testing/selftests/ptp/phc.sh
+++ b/tools/testing/selftests/ptp/phc.sh
@@ -8,17 +8,20 @@ ALL_TESTS="
 "
 DEV=$1
 
+# Kselftest framework requirement - SKIP code is 4.
+ksft_skip=4
+
 ##############################################################################
 # Sanity checks
 
 if [[ "$(id -u)" -ne 0 ]]; then
 	echo "SKIP: need root privileges"
-	exit 0
+	exit $ksft_skip
 fi
 
 if [[ "$DEV" == "" ]]; then
 	echo "SKIP: PTP device not provided"
-	exit 0
+	exit $ksft_skip
 fi
 
 require_command()
@@ -27,7 +30,7 @@ require_command()
 
 	if [[ ! -x "$(command -v "$cmd")" ]]; then
 		echo "SKIP: $cmd not installed"
-		exit 1
+		exit $ksft_skip
 	fi
 }
 
@@ -37,7 +40,7 @@ phc_sanity()
 
 	if [ $? != 0 ]; then
 		echo "SKIP: unknown clock $DEV: No such device"
-		exit 1
+		exit $ksft_skip
 	fi
 }
 
-- 
2.43.0