linux-kernel - [PATCH] ASoC: qdsp6: audioreach: Fix clang -Wimplicit-fallthrough

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Date:   Wed, 27 Oct 2021 12:08:23 -0700
From:   Nathan Chancellor <nathan@...nel.org>
To:     Srinivas Kandagatla <srinivas.kandagatla@...aro.org>,
        Banajit Goswami <bgoswami@...eaurora.org>,
        Liam Girdwood <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>
Cc:     Nick Desaulniers <ndesaulniers@...gle.com>,
        alsa-devel@...a-project.org, linux-kernel@...r.kernel.org,
        llvm@...ts.linux.dev, Nathan Chancellor <nathan@...nel.org>
Subject: [PATCH] ASoC: qdsp6: audioreach: Fix clang -Wimplicit-fallthrough

Clang warns:

sound/soc/qcom/qdsp6/topology.c:465:3: warning: unannotated fall-through between switch labels [-Wimplicit-fallthrough]
                default:
                ^
sound/soc/qcom/qdsp6/topology.c:465:3: note: insert 'break;' to avoid fall-through
                default:
                ^
                break;
1 warning generated.

Clang is a little more pedantic than GCC, which permits implicit
fallthroughs to cases that contain just break or return. Clang's version
is more in line with the kernel's own stance in deprecated.rst, which
states that all switch/case blocks must end in either break,
fallthrough, continue, goto, or return. Add the missing break to fix
the warning.

Link: https://github.com/ClangBuiltLinux/linux/issues/1495
Signed-off-by: Nathan Chancellor <nathan@...nel.org>
---
 sound/soc/qcom/qdsp6/topology.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sound/soc/qcom/qdsp6/topology.c b/sound/soc/qcom/qdsp6/topology.c
index f31895379925..bd649c232a06 100644
--- a/sound/soc/qcom/qdsp6/topology.c
+++ b/sound/soc/qcom/qdsp6/topology.c
@@ -461,7 +461,7 @@ static struct audioreach_module *audioreach_parse_common_tokens(struct q6apm *ap
 			break;
 		case AR_TKN_U32_MODULE_DST_IN_PORT_ID:
 			dst_mod_ip_port_id = le32_to_cpu(mod_elem->value);
-
+			break;
 		default:
 			break;
 

base-commit: 1dcc81d95b910dc404c40ff6101bfa2520a3528e
-- 
2.33.1.637.gf443b226ca