linux-kernel - [PATCH] selftests/ftrace: Fix bash specific "==" operator

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Date:   Sun, 22 Jan 2023 08:32:50 +0900
From:   "Masami Hiramatsu (Google)" <mhiramat@...nel.org>
To:     Shuah Khan <shuah@...nel.org>, Steven Rostedt <rostedt@...dmis.org>
Cc:     Yipeng Zou <zouyipeng@...wei.com>,
        Masami Hiramatsu <mhiramat@...nel.org>,
        linux-kernel@...r.kernel.org, linux-trace-kernel@...r.kernel.org,
        linux-kselftest@...r.kernel.org
Subject: [PATCH] selftests/ftrace: Fix bash specific "==" operator

From: Masami Hiramatsu (Google) <mhiramat@...nel.org>

Since commit a1d6cd88c897 ("selftests/ftrace: event_triggers: wait
longer for test_event_enable") introduced bash specific "=="
comparation operator, that test will fail when we run it on a
posix-shell. `checkbashisms` warned it as below.

possible bashism in ftrace/func_event_triggers.tc line 45 (should be 'b = a'):
        if [ "$e" == $val ]; then

This replaces it with "=".

Fixes: a1d6cd88c897 ("selftests/ftrace: event_triggers: wait longer for test_event_enable")
Signed-off-by: Masami Hiramatsu (Google) <mhiramat@...nel.org>
---
 .../ftrace/test.d/ftrace/func_event_triggers.tc    |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/testing/selftests/ftrace/test.d/ftrace/func_event_triggers.tc b/tools/testing/selftests/ftrace/test.d/ftrace/func_event_triggers.tc
index 3eea2abf68f9..2ad7d4b501cc 100644
--- a/tools/testing/selftests/ftrace/test.d/ftrace/func_event_triggers.tc
+++ b/tools/testing/selftests/ftrace/test.d/ftrace/func_event_triggers.tc
@@ -42,7 +42,7 @@ test_event_enabled() {
 
     while [ $check_times -ne 0 ]; do
 	e=`cat $EVENT_ENABLE`
-	if [ "$e" == $val ]; then
+	if [ "$e" = $val ]; then
 	    return 0
 	fi
 	sleep $SLEEP_TIME