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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id DCF00ECAAD3 for ; Wed, 14 Sep 2022 09:11:16 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231401AbiINJLP (ORCPT ); Wed, 14 Sep 2022 05:11:15 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37232 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231382AbiINJKl (ORCPT ); Wed, 14 Sep 2022 05:10:41 -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 317C94DB32; Wed, 14 Sep 2022 02:04:56 -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 D82F8619EF; Wed, 14 Sep 2022 09:04:50 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id CF650C433D6; Wed, 14 Sep 2022 09:04:47 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1663146290; bh=J684+1tGOTHXJ/DvkMVXmJZ8X5/r0afZ3s5VnEd66vw=; h=From:To:Cc:Subject:Date:From; b=efBHd8tbxqdujdRcn1Z+kqnrdnu4o8Rf8+fbVVS7cHnDYpImhL7TV71c+WZPY8U72 pQ6O8p1bCeczW88exEVtYiPNLmhfTnAW+lVPgJ8tt7pfM9N0BIJXvrY1WrLqU//9ll smfrBwZObtysmYs0qA6saKfXIkM76vU0b3SmvseaNbpqKuFJwNhlwh2cn67VRFNfo8 bVOuq9X9fGq5KSoTw9ih0b73flp7emUAQdGBns6stkgpesmWTrFe/gP2K3j2IcbVrd llRWnD9bmZeMZ17LQ/VFVm0KiTLr5JQcZFQZzIgzYJbfixcjT+K2E5h4hPQ4qcJ15S NBGQOqdG20uOA== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Takashi Iwai , Mark Brown , Sasha Levin , lgirdwood@gmail.com, perex@perex.cz, tiwai@suse.com, hdegoede@redhat.com, steve@sk2.org, ckeepax@opensource.cirrus.com, alsa-devel@alsa-project.org Subject: [PATCH AUTOSEL 4.19 1/9] ASoC: nau8824: Fix semaphore unbalance at error paths Date: Wed, 14 Sep 2022 05:04:35 -0400 Message-Id: <20220914090445.471489-1-sashal@kernel.org> X-Mailer: git-send-email 2.35.1 MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Takashi Iwai [ Upstream commit 5628560e90395d3812800a8e44a01c32ffa429ec ] The semaphore of nau8824 wasn't properly unlocked at some error handling code paths, hence this may result in the unbalance (and potential lock-up). Fix them to handle the semaphore up properly. Signed-off-by: Takashi Iwai Link: https://lore.kernel.org/r/20220823081000.2965-3-tiwai@suse.de Signed-off-by: Mark Brown Signed-off-by: Sasha Levin --- sound/soc/codecs/nau8824.c | 17 ++++++++++------- 1 file changed, 10 insertions(+), 7 deletions(-) diff --git a/sound/soc/codecs/nau8824.c b/sound/soc/codecs/nau8824.c index 4af87340b1655..4f18bb272e929 100644 --- a/sound/soc/codecs/nau8824.c +++ b/sound/soc/codecs/nau8824.c @@ -1075,6 +1075,7 @@ static int nau8824_hw_params(struct snd_pcm_substream *substream, struct snd_soc_component *component = dai->component; struct nau8824 *nau8824 = snd_soc_component_get_drvdata(component); unsigned int val_len = 0, osr, ctrl_val, bclk_fs, bclk_div; + int err = -EINVAL; nau8824_sema_acquire(nau8824, HZ); @@ -1091,7 +1092,7 @@ static int nau8824_hw_params(struct snd_pcm_substream *substream, osr &= NAU8824_DAC_OVERSAMPLE_MASK; if (nau8824_clock_check(nau8824, substream->stream, nau8824->fs, osr)) - return -EINVAL; + goto error; regmap_update_bits(nau8824->regmap, NAU8824_REG_CLK_DIVIDER, NAU8824_CLK_DAC_SRC_MASK, osr_dac_sel[osr].clk_src << NAU8824_CLK_DAC_SRC_SFT); @@ -1101,7 +1102,7 @@ static int nau8824_hw_params(struct snd_pcm_substream *substream, osr &= NAU8824_ADC_SYNC_DOWN_MASK; if (nau8824_clock_check(nau8824, substream->stream, nau8824->fs, osr)) - return -EINVAL; + goto error; regmap_update_bits(nau8824->regmap, NAU8824_REG_CLK_DIVIDER, NAU8824_CLK_ADC_SRC_MASK, osr_adc_sel[osr].clk_src << NAU8824_CLK_ADC_SRC_SFT); @@ -1122,7 +1123,7 @@ static int nau8824_hw_params(struct snd_pcm_substream *substream, else if (bclk_fs <= 256) bclk_div = 0; else - return -EINVAL; + goto error; regmap_update_bits(nau8824->regmap, NAU8824_REG_PORT0_I2S_PCM_CTRL_2, NAU8824_I2S_LRC_DIV_MASK | NAU8824_I2S_BLK_DIV_MASK, @@ -1143,15 +1144,17 @@ static int nau8824_hw_params(struct snd_pcm_substream *substream, val_len |= NAU8824_I2S_DL_32; break; default: - return -EINVAL; + goto error; } regmap_update_bits(nau8824->regmap, NAU8824_REG_PORT0_I2S_PCM_CTRL_1, NAU8824_I2S_DL_MASK, val_len); + err = 0; + error: nau8824_sema_release(nau8824); - return 0; + return err; } static int nau8824_set_fmt(struct snd_soc_dai *dai, unsigned int fmt) @@ -1160,8 +1163,6 @@ static int nau8824_set_fmt(struct snd_soc_dai *dai, unsigned int fmt) struct nau8824 *nau8824 = snd_soc_component_get_drvdata(component); unsigned int ctrl1_val = 0, ctrl2_val = 0; - nau8824_sema_acquire(nau8824, HZ); - switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { case SND_SOC_DAIFMT_CBM_CFM: ctrl2_val |= NAU8824_I2S_MS_MASTER; @@ -1203,6 +1204,8 @@ static int nau8824_set_fmt(struct snd_soc_dai *dai, unsigned int fmt) return -EINVAL; } + nau8824_sema_acquire(nau8824, HZ); + regmap_update_bits(nau8824->regmap, NAU8824_REG_PORT0_I2S_PCM_CTRL_1, NAU8824_I2S_DF_MASK | NAU8824_I2S_BP_MASK | NAU8824_I2S_PCMB_EN, ctrl1_val); -- 2.35.1