linux-kernel - [PATCH 4.14 058/105] ASoC: davinci-mcasp: Fix an error handling path in davinci_mcasp

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Date:   Mon, 11 Nov 2019 19:28:28 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Christophe JAILLET <christophe.jaillet@...adoo.fr>,
        Peter Ujfalusi <peter.ujfalusi@...com>,
        Mark Brown <broonie@...nel.org>,
        Mathieu Poirier <mathieu.poirier@...aro.org>
Subject: [PATCH 4.14 058/105] ASoC: davinci-mcasp: Fix an error handling path in davinci_mcasp_probe()

From: Christophe Jaillet <christophe.jaillet@...adoo.fr>

commit 1b8b68b05d1868404316d32e20782b00442aba90 upstream

All error handling paths in this function 'goto err' except this one.

If one of the 2 previous memory allocations fails, we should go through
the existing error handling path. Otherwise there is an unbalanced
pm_runtime_enable()/pm_runtime_disable().

Fixes: dd55ff8346a9 ("ASoC: davinci-mcasp: Add set_tdm_slots() support")
Signed-off-by: Christophe JAILLET <christophe.jaillet@...adoo.fr>
Acked-by: Peter Ujfalusi <peter.ujfalusi@...com>
Signed-off-by: Mark Brown <broonie@...nel.org>
Signed-off-by: Mathieu Poirier <mathieu.poirier@...aro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 sound/soc/davinci/davinci-mcasp.c |    6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

--- a/sound/soc/davinci/davinci-mcasp.c
+++ b/sound/soc/davinci/davinci-mcasp.c
@@ -2022,8 +2022,10 @@ static int davinci_mcasp_probe(struct pl
 			     GFP_KERNEL);
 
 	if (!mcasp->chconstr[SNDRV_PCM_STREAM_PLAYBACK].list ||
-	    !mcasp->chconstr[SNDRV_PCM_STREAM_CAPTURE].list)
-		return -ENOMEM;
+	    !mcasp->chconstr[SNDRV_PCM_STREAM_CAPTURE].list) {
+		ret = -ENOMEM;
+		goto err;
+	}
 
 	ret = davinci_mcasp_set_ch_constraints(mcasp);
 	if (ret)