From mboxrd@z Thu Jan 1 00:00:00 1970 From: Fabio Estevam Subject: [PATCH] ASoC: fsl: fsl_spdif: Check for clk_prepare_enable() error Date: Sat, 20 Jun 2015 18:18:06 -0300 Message-ID: <1434835086-27176-1-git-send-email-festevam@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from mail-qg0-f46.google.com (mail-qg0-f46.google.com [209.85.192.46]) by alsa0.perex.cz (Postfix) with ESMTP id EB12B260526 for ; Sat, 20 Jun 2015 23:18:27 +0200 (CEST) Received: by qgal13 with SMTP id l13so44878646qga.3 for ; Sat, 20 Jun 2015 14:18:27 -0700 (PDT) List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: alsa-devel-bounces@alsa-project.org Sender: alsa-devel-bounces@alsa-project.org To: broonie@kernel.org Cc: nicoleotsuka@gmail.com, Fabio Estevam , alsa-devel@alsa-project.org List-Id: alsa-devel@alsa-project.org From: Fabio Estevam clk_prepare_enable() may fail, so we should better check its return value and propagate it in the case of error. Signed-off-by: Fabio Estevam --- sound/soc/fsl/fsl_spdif.c | 14 +++++++++++--- 1 file changed, 11 insertions(+), 3 deletions(-) diff --git a/sound/soc/fsl/fsl_spdif.c b/sound/soc/fsl/fsl_spdif.c index 8e93221..489fa86 100644 --- a/sound/soc/fsl/fsl_spdif.c +++ b/sound/soc/fsl/fsl_spdif.c @@ -482,13 +482,18 @@ static int fsl_spdif_startup(struct snd_pcm_substream *substream, mask = SCR_TXFIFO_AUTOSYNC_MASK | SCR_TXFIFO_CTRL_MASK | SCR_TXSEL_MASK | SCR_USRC_SEL_MASK | SCR_TXFIFO_FSEL_MASK; - for (i = 0; i < SPDIF_TXRATE_MAX; i++) - clk_prepare_enable(spdif_priv->txclk[i]); + for (i = 0; i < SPDIF_TXRATE_MAX; i++) { + ret = clk_prepare_enable(spdif_priv->txclk[i]); + if (ret) + goto disable_txclk; + } } else { scr = SCR_RXFIFO_FSEL_IF8 | SCR_RXFIFO_AUTOSYNC; mask = SCR_RXFIFO_FSEL_MASK | SCR_RXFIFO_AUTOSYNC_MASK| SCR_RXFIFO_CTL_MASK | SCR_RXFIFO_OFF_MASK; - clk_prepare_enable(spdif_priv->rxclk); + ret = clk_prepare_enable(spdif_priv->rxclk); + if (ret) + goto err; } regmap_update_bits(regmap, REG_SPDIF_SCR, mask, scr); @@ -497,6 +502,9 @@ static int fsl_spdif_startup(struct snd_pcm_substream *substream, return 0; +disable_txclk: + for (i--; i >= 0; i--) + clk_disable_unprepare(spdif_priv->txclk[i]); err: clk_disable_unprepare(spdif_priv->coreclk); -- 1.9.1