linux-kernel - [PATCH] selftests: posix_timers: Use common error handling code in two functions

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Message-ID: <3ce187fa-a6df-a419-6924-ea12bf837972@users.sourceforge.net>
Date:   Tue, 21 Nov 2017 11:00:52 +0100
From:   SF Markus Elfring <elfring@...rs.sourceforge.net>
To:     linux-kselftest@...r.kernel.org,
        Frederic Weisbecker <fweisbec@...il.com>,
        John Stultz <john.stultz@...aro.org>,
        Shuah Khan <shuah@...nel.org>,
        Stephen Boyd <sboyd@...eaurora.org>,
        Thomas Gleixner <tglx@...utronix.de>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        kernel-janitors@...r.kernel.org
Subject: [PATCH] selftests: posix_timers: Use common error handling code in
 two functions

From: Markus Elfring <elfring@...rs.sourceforge.net>
Date: Tue, 21 Nov 2017 10:50:32 +0100

Add jump targets so that a bit of exception handling can be better reused
at the end of these functions.

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfring@...rs.sourceforge.net>
---
 tools/testing/selftests/timers/posix_timers.c | 32 +++++++++++++--------------
 1 file changed, 16 insertions(+), 16 deletions(-)

diff --git a/tools/testing/selftests/timers/posix_timers.c b/tools/testing/selftests/timers/posix_timers.c
index 15cf56d32155..5c9fbb06194f 100644
--- a/tools/testing/selftests/timers/posix_timers.c
+++ b/tools/testing/selftests/timers/posix_timers.c
@@ -104,10 +104,8 @@ static int check_itimer(int which)
 		signal(SIGALRM, sig_handler);
 
 	err = gettimeofday(&start, NULL);
-	if (err < 0) {
-		perror("Can't call gettimeofday()\n");
-		return -1;
-	}
+	if (err < 0)
+		goto report_failure;
 
 	err = setitimer(which, &val, NULL);
 	if (err < 0) {
@@ -123,10 +121,8 @@ static int check_itimer(int which)
 		idle_loop();
 
 	err = gettimeofday(&end, NULL);
-	if (err < 0) {
-		perror("Can't call gettimeofday()\n");
-		return -1;
-	}
+	if (err < 0)
+		goto report_failure;
 
 	if (!check_diff(start, end))
 		printf("[OK]\n");
@@ -134,6 +130,10 @@ static int check_itimer(int which)
 		printf("[FAIL]\n");
 
 	return 0;
+
+report_failure:
+	perror("Can't call gettimeofday()\n");
+	return -1;
 }
 
 static int check_timer_create(int which)
@@ -162,10 +162,8 @@ static int check_timer_create(int which)
 	signal(SIGALRM, sig_handler);
 
 	err = gettimeofday(&start, NULL);
-	if (err < 0) {
-		perror("Can't call gettimeofday()\n");
-		return -1;
-	}
+	if (err < 0)
+		goto report_failure;
 
 	err = timer_settime(id, 0, &val, NULL);
 	if (err < 0) {
@@ -176,10 +174,8 @@ static int check_timer_create(int which)
 	user_loop();
 
 	err = gettimeofday(&end, NULL);
-	if (err < 0) {
-		perror("Can't call gettimeofday()\n");
-		return -1;
-	}
+	if (err < 0)
+		goto report_failure;
 
 	if (!check_diff(start, end))
 		printf("[OK]\n");
@@ -187,6 +183,10 @@ static int check_timer_create(int which)
 		printf("[FAIL]\n");
 
 	return 0;
+
+report_failure:
+	perror("Can't call gettimeofday()\n");
+	return -1;
 }
 
 int main(int argc, char **argv)
-- 
2.15.0