linux-kernel - Re: [alsa-devel] [PATCH v2 3/3] ASoC: stm32: Add full duplex support to i2s (fwd)

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Date:   Thu, 11 May 2017 10:13:53 +0800 (SGT)
From:   Julia Lawall <julia.lawall@...6.fr>
To:     olivier moysan <olivier.moysan@...com>
cc:     lgirdwood@...il.com, broonie@...nel.org, perex@...ex.cz,
        tiwai@...e.com, mcoquelin.stm32@...il.com, alexandre.torgue@...com,
        alsa-devel@...a-project.org, robh@...nel.org, mark.rutland@....com,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        kernel@...inux.com, linux-kernel@...r.kernel.org,
        arnaud.pouliquen@...com, benjamin.gaignard@...com,
        kbuild-all@...org
Subject: Re: [alsa-devel] [PATCH v2 3/3] ASoC: stm32: Add full duplex support
 to i2s (fwd)

Please check whether the lock taken on line 585 should be freed on line
598.  The report also mentions line 652, although that is not shown.

julia

---------- Forwarded message ----------
Date: Thu, 11 May 2017 09:49:21 +0800
From: kbuild test robot <fengguang.wu@...el.com>
To: kbuild@...org
Cc: Julia Lawall <julia.lawall@...6.fr>
Subject: Re: [alsa-devel] [PATCH v2 3/3] ASoC: stm32: Add full duplex support to
     i2s

Hi olivier,

[auto build test WARNING on asoc/for-next]
[also build test WARNING on next-20170510]
[cannot apply to v4.11]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

url:    https://github.com/0day-ci/linux/commits/olivier-moysan/Add-I2S-driver/20170511-075335
base:   https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git for-next
:::::: branch date: 2 hours ago
:::::: commit date: 2 hours ago

>> sound/soc/stm/stm32_i2s.c:598:3-9: preceding lock on line 585
>> sound/soc/stm/stm32_i2s.c:598:3-9: preceding lock on line 585
   sound/soc/stm/stm32_i2s.c:652:3-9: preceding lock on line 585

git remote add linux-review https://github.com/0day-ci/linux
git remote update linux-review
git checkout 9f5663c4aa8961bf2a547683af787e606503376e
vim +598 sound/soc/stm/stm32_i2s.c

1ebd36ae olivier moysan 2017-05-10  579  {
1ebd36ae olivier moysan 2017-05-10  580  	struct stm32_i2s_data *i2s = snd_soc_dai_get_drvdata(cpu_dai);
1ebd36ae olivier moysan 2017-05-10  581  	bool playback_flg = (substream->stream == SNDRV_PCM_STREAM_PLAYBACK);
9f5663c4 olivier moysan 2017-05-10  582  	u32 cfg1_mask, ier;
1ebd36ae olivier moysan 2017-05-10  583  	int ret;
1ebd36ae olivier moysan 2017-05-10  584
9f5663c4 olivier moysan 2017-05-10 @585  	spin_lock(&i2s->lock_fd);
9f5663c4 olivier moysan 2017-05-10  586
1ebd36ae olivier moysan 2017-05-10  587  	switch (cmd) {
1ebd36ae olivier moysan 2017-05-10  588  	case SNDRV_PCM_TRIGGER_START:
1ebd36ae olivier moysan 2017-05-10  589  	case SNDRV_PCM_TRIGGER_RESUME:
1ebd36ae olivier moysan 2017-05-10  590  	case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
1ebd36ae olivier moysan 2017-05-10  591  		/* Enable i2s */
1ebd36ae olivier moysan 2017-05-10  592  		dev_dbg(cpu_dai->dev, "start I2S\n");
1ebd36ae olivier moysan 2017-05-10  593
1ebd36ae olivier moysan 2017-05-10  594  		ret = regmap_update_bits(i2s->regmap, STM32_I2S_CR1_REG,
1ebd36ae olivier moysan 2017-05-10  595  					 I2S_CR1_SPE, I2S_CR1_SPE);
1ebd36ae olivier moysan 2017-05-10  596  		if (ret < 0) {
1ebd36ae olivier moysan 2017-05-10  597  			dev_err(cpu_dai->dev, "Error %d enabling I2S\n", ret);
1ebd36ae olivier moysan 2017-05-10 @598  			return ret;
1ebd36ae olivier moysan 2017-05-10  599  		}
1ebd36ae olivier moysan 2017-05-10  600
1ebd36ae olivier moysan 2017-05-10  601  		ret = regmap_update_bits(i2s->regmap, STM32_I2S_CR1_REG,

:::::: The code at line 598 was first introduced by commit
:::::: 1ebd36ae636af5c130a9df4d9a921e4ed984a6e9 ASoC: stm32: Add I2S driver

:::::: TO: olivier moysan <olivier.moysan@...com>
:::::: CC: 0day robot <fengguang.wu@...el.com>

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