From: =?UTF-8?q?Ilpo=20J=C3=A4rvinen?= <ilpo.jarvinen@linux.intel.com>
Date: Wed, 15 Feb 2023 15:06:00 +0200
Subject: [PATCH] selftests/resctrl: Check for return value after
 write_schemata()
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References: bsc#1012628
Patch-mainline: 6.3.2
Git-commit: 0d45c83b95da414e98ad333e723141a94f6e2c64

[ Upstream commit 0d45c83b95da414e98ad333e723141a94f6e2c64 ]

MBA test case writes schemata but it does not check if the write is
successful or not.

Add the error check and return error properly.

Fixes: 01fee6b4d1f9 ("selftests/resctrl: Add MBA test")
Co-developed-by: Fenghua Yu <fenghua.yu@intel.com>
Signed-off-by: Fenghua Yu <fenghua.yu@intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Reviewed-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
 tools/testing/selftests/resctrl/mba_test.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/tools/testing/selftests/resctrl/mba_test.c b/tools/testing/selftests/resctrl/mba_test.c
index f32289ae..97dc98c0 100644
--- a/tools/testing/selftests/resctrl/mba_test.c
+++ b/tools/testing/selftests/resctrl/mba_test.c
@@ -28,6 +28,7 @@ static int mba_setup(int num, ...)
 	struct resctrl_val_param *p;
 	char allocation_str[64];
 	va_list param;
+	int ret;
 
 	va_start(param, num);
 	p = va_arg(param, struct resctrl_val_param *);
@@ -45,7 +46,11 @@ static int mba_setup(int num, ...)
 
 	sprintf(allocation_str, "%d", allocation);
 
-	write_schemata(p->ctrlgrp, allocation_str, p->cpu_no, p->resctrl_val);
+	ret = write_schemata(p->ctrlgrp, allocation_str, p->cpu_no,
+			     p->resctrl_val);
+	if (ret < 0)
+		return ret;
+
 	allocation -= ALLOCATION_STEP;
 
 	return 0;
-- 
2.35.3