From nobody Wed Apr 8 07:42:48 2026 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id A515DC32772 for ; Mon, 22 Aug 2022 18:31:29 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237486AbiHVSb2 (ORCPT ); Mon, 22 Aug 2022 14:31:28 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59476 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237705AbiHVSbK (ORCPT ); Mon, 22 Aug 2022 14:31:10 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E05C8167E8 for ; Mon, 22 Aug 2022 11:31:09 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 8077F612D8 for ; Mon, 22 Aug 2022 18:31:09 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 378F9C433D6; Mon, 22 Aug 2022 18:31:08 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1661193068; bh=xXLp8vcpSHFXcg8Thw4aqS7oAXd1A4ff7T8kKAEapI8=; h=From:To:Cc:Subject:Date:From; b=BJqqyAHDoivLbBiMTx6xaDsVTE0XnbDmqovaLOU1mOvJ22j85rhVQgGVWxN7+bozo b9izsqjngBTe+tmQYon6HJMNUsEOZDAbKq9HdQuJrcyJM9XjFKFwEMHnx4ftqrT9fn hnTp7UCjOyu68bd1yjnrXAab0XBDOjohSaGNC9N0DbXP5wue/CK21Bw/hu/Eww5neC scniUIrRbM6wIdtvmTHIDNApbUBu1lMxpFYKzGOi+CseTrV46rjCcbrxsP49tG7mpm wUBm/GCHACYjoerh1kXVKVtv0pkmmWe2kWp9O/Zwipx4PdM404UcGvH27nhci/CCBz YJKw1xxP7Nd4Q== From: Nathan Chancellor To: Liam Girdwood , Mark Brown , Matt Flax Cc: Nick Desaulniers , Tom Rix , alsa-devel@alsa-project.org, linux-kernel@vger.kernel.org, llvm@lists.linux.dev, patches@lists.linux.dev, Nathan Chancellor , kernel test robot , "Sudip Mukherjee (Codethink)" Subject: [PATCH] ASoC: codes: src4xxx: Avoid clang -Wsometimes-uninitialized in src4xxx_hw_params() Date: Mon, 22 Aug 2022 11:31:01 -0700 Message-Id: <20220822183101.1115095-1-nathan@kernel.org> X-Mailer: git-send-email 2.37.2 MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" Clang warns: sound/soc/codecs/src4xxx.c:280:3: error: variable 'd' is used uninitializ= ed whenever switch default is taken [-Werror,-Wsometimes-uninitialized] default: ^~~~~~~ sound/soc/codecs/src4xxx.c:298:59: note: uninitialized use occurs here ret =3D regmap_write(src4xxx->regmap, SRC4XXX_RCV_PLL_11,= d); ^ sound/soc/codecs/src4xxx.c:223:20: note: initialize the variable 'd' to s= ilence this warning int val, pj, jd, d; ^ =3D 0 sound/soc/codecs/src4xxx.c:280:3: error: variable 'jd' is used uninitiali= zed whenever switch default is taken [-Werror,-Wsometimes-uninitialized] default: ^~~~~~~ sound/soc/codecs/src4xxx.c:293:59: note: uninitialized use occurs here ret =3D regmap_write(src4xxx->regmap, SRC4XXX_RCV_PLL_10,= jd); ^~ sound/soc/codecs/src4xxx.c:223:17: note: initialize the variable 'jd' to = silence this warning int val, pj, jd, d; ^ =3D 0 sound/soc/codecs/src4xxx.c:280:3: error: variable 'pj' is used uninitiali= zed whenever switch default is taken [-Werror,-Wsometimes-uninitialized] default: ^~~~~~~ sound/soc/codecs/src4xxx.c:288:59: note: uninitialized use occurs here ret =3D regmap_write(src4xxx->regmap, SRC4XXX_RCV_PLL_0F,= pj); ^~ sound/soc/codecs/src4xxx.c:223:13: note: initialize the variable 'pj' to = silence this warning int val, pj, jd, d; ^ =3D 0 3 errors generated. According to the comment in the default case, other parts of the chip are still functional without these values so just return 0 in the default case to avoid using these variables uninitialized. Link: https://github.com/ClangBuiltLinux/linux/issues/1691 Reported-by: kernel test robot Reported-by: "Sudip Mukherjee (Codethink)" Signed-off-by: Nathan Chancellor --- sound/soc/codecs/src4xxx.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/sound/soc/codecs/src4xxx.c b/sound/soc/codecs/src4xxx.c index a8f143057b41..cf45caa4bf7f 100644 --- a/sound/soc/codecs/src4xxx.c +++ b/sound/soc/codecs/src4xxx.c @@ -283,7 +283,7 @@ static int src4xxx_hw_params(struct snd_pcm_substream *= substream, */ dev_info(component->dev, "Couldn't set the RCV PLL as this master clock rate is unknown\n"); - break; + return 0; } ret =3D regmap_write(src4xxx->regmap, SRC4XXX_RCV_PLL_0F, pj); if (ret < 0) base-commit: 94f072748337424c9cf92cd018532a34db3a5516 --=20 2.37.2