From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.9 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 449A5ECE58E for ; Mon, 7 Oct 2019 17:09:45 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 0BC79206C0 for ; Mon, 7 Oct 2019 17:09:45 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=ti.com header.i=@ti.com header.b="ZzpVKSJO" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729062AbfJGRJn (ORCPT ); Mon, 7 Oct 2019 13:09:43 -0400 Received: from lelv0142.ext.ti.com ([198.47.23.249]:54528 "EHLO lelv0142.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728130AbfJGRJm (ORCPT ); Mon, 7 Oct 2019 13:09:42 -0400 Received: from lelv0265.itg.ti.com ([10.180.67.224]) by lelv0142.ext.ti.com (8.15.2/8.15.2) with ESMTP id x97H9HQP034661; Mon, 7 Oct 2019 12:09:17 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=ti-com-17Q1; t=1570468157; bh=Uj2L0n4bSMjAeSXo6uEKjVpSlKE2402ydacUosjJgTo=; h=From:To:CC:Subject:Date; b=ZzpVKSJOY1F/PRsf5iTKydJBrQS0AFU3f5fHYCkl+/vIYGcJy5XnpSVqQ1H69+IMO i1Bd8faoTrZBaZ3xN6tL/KpYiv6Gg17MoWNVS3Z+mSxQMuZEZMdg7C846Mvisx0+WD MPMdjhHXthbJaiyx/6YywOUxbVbhNd+VM3EXBxUs= Received: from DLEE103.ent.ti.com (dlee103.ent.ti.com [157.170.170.33]) by lelv0265.itg.ti.com (8.15.2/8.15.2) with ESMTPS id x97H9GOC067748 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=FAIL); Mon, 7 Oct 2019 12:09:17 -0500 Received: from DLEE104.ent.ti.com (157.170.170.34) by DLEE103.ent.ti.com (157.170.170.33) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1713.5; Mon, 7 Oct 2019 12:09:14 -0500 Received: from lelv0326.itg.ti.com (10.180.67.84) by DLEE104.ent.ti.com (157.170.170.34) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1713.5 via Frontend Transport; Mon, 7 Oct 2019 12:09:14 -0500 Received: from localhost (ileax41-snat.itg.ti.com [10.172.224.153]) by lelv0326.itg.ti.com (8.15.2/8.15.2) with ESMTP id x97H9GFE005648; Mon, 7 Oct 2019 12:09:16 -0500 From: Dan Murphy To: , CC: , , , , , , Dan Murphy Subject: [PATCH v2 1/3] ASoC: tas2770: Fix snd_soc_update_bits error handling Date: Mon, 7 Oct 2019 12:11:55 -0500 Message-ID: <20191007171157.17813-1-dmurphy@ti.com> X-Mailer: git-send-email 2.22.0.214.g8dca754b1e MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org According the documentation for snd_soc_update_bits the API will return a 1 if the update was successful with a value change, a 0 if the update was successful with no value change or a negative if the command just failed. So the value of return in the driver needs to be checked for being less then 0 or the caller may indicate failure when the value actually changed. Signed-off-by: Dan Murphy --- v2 - Missed one update_bit return issue. sound/soc/codecs/tas2770.c | 46 +++++++++++++++++++++++++------------- 1 file changed, 30 insertions(+), 16 deletions(-) diff --git a/sound/soc/codecs/tas2770.c b/sound/soc/codecs/tas2770.c index dbbb21fe0548..361d0bba72b3 100644 --- a/sound/soc/codecs/tas2770.c +++ b/sound/soc/codecs/tas2770.c @@ -82,7 +82,8 @@ static int tas2770_codec_suspend(struct snd_soc_component *component) TAS2770_PWR_CTRL, TAS2770_PWR_CTRL_MASK, TAS2770_PWR_CTRL_SHUTDOWN); - if (ret) + + if (ret < 0) return ret; return 0; @@ -96,8 +97,9 @@ static int tas2770_codec_resume(struct snd_soc_component *component) TAS2770_PWR_CTRL, TAS2770_PWR_CTRL_MASK, TAS2770_PWR_CTRL_ACTIVE); - if (ret) - return -EINVAL; + + if (ret < 0) + return ret; return 0; } @@ -149,7 +151,10 @@ static int tas2770_dac_event(struct snd_soc_dapm_widget *w, } end: - return ret; + if (ret < 0) + return ret; + + return 0; } static const struct snd_kcontrol_new isense_switch = @@ -199,7 +204,10 @@ static int tas2770_mute(struct snd_soc_dai *dai, int mute) TAS2770_PWR_CTRL_MASK, TAS2770_PWR_CTRL_ACTIVE); - return ret; + if (ret < 0) + return ret; + + return 0; } static int tas2770_set_bitwidth(struct tas2770_priv *tas2770, int bitwidth) @@ -252,7 +260,10 @@ static int tas2770_set_bitwidth(struct tas2770_priv *tas2770, int bitwidth) tas2770->i_sense_slot); end: - return ret; + if (ret < 0) + return ret; + + return 0; } static int tas2770_set_samplerate(struct tas2770_priv *tas2770, int samplerate) @@ -344,9 +355,11 @@ static int tas2770_set_samplerate(struct tas2770_priv *tas2770, int samplerate) } end: - if (!ret) - tas2770->sampling_rate = samplerate; - return ret; + if (ret < 0) + return ret; + + tas2770->sampling_rate = samplerate; + return 0; } static int tas2770_hw_params(struct snd_pcm_substream *substream, @@ -401,7 +414,7 @@ static int tas2770_set_fmt(struct snd_soc_dai *dai, unsigned int fmt) ret = snd_soc_component_update_bits(component, TAS2770_TDM_CFG_REG1, TAS2770_TDM_CFG_REG1_RX_MASK, asi_cfg_1); - if (ret) + if (ret < 0) return ret; switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { @@ -426,7 +439,7 @@ static int tas2770_set_fmt(struct snd_soc_dai *dai, unsigned int fmt) ret = snd_soc_component_update_bits(component, TAS2770_TDM_CFG_REG1, TAS2770_TDM_CFG_REG1_MASK, (tdm_rx_start_slot << TAS2770_TDM_CFG_REG1_51_SHIFT)); - if (ret) + if (ret < 0) return ret; value = snd_soc_component_read32(component, TAS2770_TDM_CFG_REG3); @@ -472,12 +485,12 @@ static int tas2770_set_dai_tdm_slot(struct snd_soc_dai *dai, ret = snd_soc_component_update_bits(component, TAS2770_TDM_CFG_REG3, TAS2770_TDM_CFG_REG3_30_MASK, (left_slot << TAS2770_TDM_CFG_REG3_30_SHIFT)); - if (ret) + if (ret < 0) return ret; ret = snd_soc_component_update_bits(component, TAS2770_TDM_CFG_REG3, TAS2770_TDM_CFG_REG3_RXS_MASK, (right_slot << TAS2770_TDM_CFG_REG3_RXS_SHIFT)); - if (ret) + if (ret < 0) return ret; switch (slot_width) { @@ -511,10 +524,11 @@ static int tas2770_set_dai_tdm_slot(struct snd_soc_dai *dai, ret = -EINVAL; } - if (!ret) - tas2770->slot_width = slot_width; + if (ret < 0) + return ret; - return ret; + tas2770->slot_width = slot_width; + return 0; } static struct snd_soc_dai_ops tas2770_dai_ops = { -- 2.22.0.214.g8dca754b1e