From: Yang Yingliang <yangyingliang@huawei.com> To: <linux-kernel@vger.kernel.org>, <alsa-devel@alsa-project.org> Cc: <broonie@kernel.org> Subject: [PATCH -next] ASoC: hisilicon: fix missing clk_disable_unprepare() on error in hi6210_i2s_startup() Date: Tue, 18 May 2021 12:45:14 +0800 [thread overview] Message-ID: <20210518044514.607010-1-yangyingliang@huawei.com> (raw) After calling clk_prepare_enable(), clk_disable_unprepare() need be called when calling clk_set_rate() failed. Fixes: 0bf750f4cbe1 ("ASoC: hisilicon: Add hi6210 i2s audio driver") Reported-by: Hulk Robot <hulkci@huawei.com> Signed-off-by: Yang Yingliang <yangyingliang@huawei.com> --- sound/soc/hisilicon/hi6210-i2s.c | 14 ++++++++------ 1 file changed, 8 insertions(+), 6 deletions(-) diff --git a/sound/soc/hisilicon/hi6210-i2s.c b/sound/soc/hisilicon/hi6210-i2s.c index 907f5f1f7b44..ff05b9779e4b 100644 --- a/sound/soc/hisilicon/hi6210-i2s.c +++ b/sound/soc/hisilicon/hi6210-i2s.c @@ -102,18 +102,15 @@ static int hi6210_i2s_startup(struct snd_pcm_substream *substream, for (n = 0; n < i2s->clocks; n++) { ret = clk_prepare_enable(i2s->clk[n]); - if (ret) { - while (n--) - clk_disable_unprepare(i2s->clk[n]); - return ret; - } + if (ret) + goto err_unprepare_clk; } ret = clk_set_rate(i2s->clk[CLK_I2S_BASE], 49152000); if (ret) { dev_err(i2s->dev, "%s: setting 49.152MHz base rate failed %d\n", __func__, ret); - return ret; + goto err_unprepare_clk; } /* enable clock before frequency division */ @@ -165,6 +162,11 @@ static int hi6210_i2s_startup(struct snd_pcm_substream *substream, hi6210_write_reg(i2s, HII2S_SW_RST_N, val); return 0; + +err_unprepare_clk: + while (n--) + clk_disable_unprepare(i2s->clk[n]); + return ret; } static void hi6210_i2s_shutdown(struct snd_pcm_substream *substream, -- 2.25.1
WARNING: multiple messages have this Message-ID (diff)
From: Yang Yingliang <yangyingliang@huawei.com> To: <linux-kernel@vger.kernel.org>, <alsa-devel@alsa-project.org> Cc: broonie@kernel.org Subject: [PATCH -next] ASoC: hisilicon: fix missing clk_disable_unprepare() on error in hi6210_i2s_startup() Date: Tue, 18 May 2021 12:45:14 +0800 [thread overview] Message-ID: <20210518044514.607010-1-yangyingliang@huawei.com> (raw) After calling clk_prepare_enable(), clk_disable_unprepare() need be called when calling clk_set_rate() failed. Fixes: 0bf750f4cbe1 ("ASoC: hisilicon: Add hi6210 i2s audio driver") Reported-by: Hulk Robot <hulkci@huawei.com> Signed-off-by: Yang Yingliang <yangyingliang@huawei.com> --- sound/soc/hisilicon/hi6210-i2s.c | 14 ++++++++------ 1 file changed, 8 insertions(+), 6 deletions(-) diff --git a/sound/soc/hisilicon/hi6210-i2s.c b/sound/soc/hisilicon/hi6210-i2s.c index 907f5f1f7b44..ff05b9779e4b 100644 --- a/sound/soc/hisilicon/hi6210-i2s.c +++ b/sound/soc/hisilicon/hi6210-i2s.c @@ -102,18 +102,15 @@ static int hi6210_i2s_startup(struct snd_pcm_substream *substream, for (n = 0; n < i2s->clocks; n++) { ret = clk_prepare_enable(i2s->clk[n]); - if (ret) { - while (n--) - clk_disable_unprepare(i2s->clk[n]); - return ret; - } + if (ret) + goto err_unprepare_clk; } ret = clk_set_rate(i2s->clk[CLK_I2S_BASE], 49152000); if (ret) { dev_err(i2s->dev, "%s: setting 49.152MHz base rate failed %d\n", __func__, ret); - return ret; + goto err_unprepare_clk; } /* enable clock before frequency division */ @@ -165,6 +162,11 @@ static int hi6210_i2s_startup(struct snd_pcm_substream *substream, hi6210_write_reg(i2s, HII2S_SW_RST_N, val); return 0; + +err_unprepare_clk: + while (n--) + clk_disable_unprepare(i2s->clk[n]); + return ret; } static void hi6210_i2s_shutdown(struct snd_pcm_substream *substream, -- 2.25.1
next reply other threads:[~2021-05-18 4:43 UTC|newest] Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-05-18 4:45 Yang Yingliang [this message] 2021-05-18 4:45 ` [PATCH -next] ASoC: hisilicon: fix missing clk_disable_unprepare() on error in hi6210_i2s_startup() Yang Yingliang 2021-05-18 16:31 ` [PATCH] " Mark Brown
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