linux-kernel - [PATCH] ASoC: smd845: fix memory leak

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Date:   Fri, 3 Aug 2018 08:42:11 -0500
From:   "Gustavo A. R. Silva" <gustavo@...eddedor.com>
To:     Rohit kumar <rohitkr@...eaurora.org>,
        Patrick Lai <plai@...eaurora.org>,
        Banajit Goswami <bgoswami@...eaurora.org>,
        Liam Girdwood <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>,
        Jaroslav Kysela <perex@...ex.cz>, Takashi Iwai <tiwai@...e.com>
Cc:     alsa-devel@...a-project.org, linux-kernel@...r.kernel.org,
        "Gustavo A. R. Silva" <gustavo@...eddedor.com>
Subject: [PATCH] ASoC: smd845: fix memory leak

In case memory resources for *card* were allocated, release them before
return.

Addresses-Coverity-ID: 1472244 ("Resource leak")
Fixes: 6b1687bf76ef ("ASoC: qcom: add sdm845 sound card support")
Signed-off-by: Gustavo A. R. Silva <gustavo@...eddedor.com>
---
NOTE: Notice that there are many places in which the return values of
      functions snd_soc_dai_set_sysclk() and snd_soc_dai_set_fmt() are
      not being checked. I wonder if this is intentional. Otherwise, I
      can send a patch for that. Please, confirm. Thanks!

 sound/soc/qcom/sdm845.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/sound/soc/qcom/sdm845.c b/sound/soc/qcom/sdm845.c
index be0cb11..c1adb77 100644
--- a/sound/soc/qcom/sdm845.c
+++ b/sound/soc/qcom/sdm845.c
@@ -222,8 +222,10 @@ static int sdm845_snd_platform_probe(struct platform_device *pdev)
 
 	/* Allocate the private data */
 	data = kzalloc(sizeof(*data), GFP_KERNEL);
-	if (!data)
-		return -ENOMEM;
+	if (!data) {
+		ret = -ENOMEM;
+		goto data_alloc_fail;
+	}
 
 	card->dev = dev;
 	dev_set_drvdata(dev, card);
@@ -248,6 +250,7 @@ static int sdm845_snd_platform_probe(struct platform_device *pdev)
 	kfree(card->dai_link);
 parse_dt_fail:
 	kfree(data);
+data_alloc_fail:
 	kfree(card);
 	return ret;
 }
-- 
2.7.4