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From:   Haowen Bai <baihaowen@meizu.com>
To:     Michael Ellerman <mpe@ellerman.id.au>,
        Benjamin Herrenschmidt <benh@kernel.crashing.org>,
        Paul Mackerras <paulus@samba.org>,
        Shuah Khan <shuah@kernel.org>
CC:     Haowen Bai <baihaowen@meizu.com>, <linuxppc-dev@lists.ozlabs.org>,
        <linux-kselftest@vger.kernel.org>, <linux-kernel@vger.kernel.org>
Subject: [PATCH] selftests/powerpc/pmu: Fix unsigned function returning negative constant
Date:   Sun, 24 Apr 2022 16:26:41 +0800
Message-ID: <1650788802-14402-1-git-send-email-baihaowen@meizu.com>
MIME-Version: 1.0
Content-Type: text/plain
Precedence: bulk

The function __perf_reg_mask has an unsigned return type, but returns a
negative constant to indicate an error condition. So we change unsigned
to int.

Signed-off-by: Haowen Bai <baihaowen@meizu.com>
---
 tools/testing/selftests/powerpc/pmu/sampling_tests/misc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/testing/selftests/powerpc/pmu/sampling_tests/misc.c b/tools/testing/selftests/powerpc/pmu/sampling_tests/misc.c
index fca054bbc094..c01a31d5f4ee 100644
--- a/tools/testing/selftests/powerpc/pmu/sampling_tests/misc.c
+++ b/tools/testing/selftests/powerpc/pmu/sampling_tests/misc.c
@@ -274,7 +274,7 @@ u64 *get_intr_regs(struct event *event, void *sample_buff)
 	return intr_regs;
 }
 
-static const unsigned int __perf_reg_mask(const char *register_name)
+static const int __perf_reg_mask(const char *register_name)
 {
 	if (!strcmp(register_name, "R0"))
 		return 0;
-- 
2.7.4