linux-kernel - [PATCH] ASoC: amd: move the call to devm_kzalloc below platform_get

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Date:   Mon, 19 Oct 2020 20:31:29 +0800
From:   Defang Bo <bodefang@....com>
To:     lgirdwood@...il.com, broonie@...nel.org, perex@...ex.cz,
        tiwai@...e.com, Vishnuvardhanrao.Ravulapati@....com
Cc:     akshu.agrawal@....com, alsa-devel@...a-project.org,
        linux-kernel@...r.kernel.org, Defang Bo <bodefang@....com>
Subject: [PATCH] ASoC: amd: move the call to devm_kzalloc below platform_get_resource()

Just as the commit <4cb79ef9c6c4>("ASoC: amd: Fix potential NULL pointer dereference"),it makes no sense to allocate any resources if res = platform_get_resource(pdev, IORESOURCE_MEM, 0); fails,so move the call to devm_kzalloc() below the mentioned code.

Signed-off-by: Defang Bo <bodefang@....com>
---
 sound/soc/amd/raven/acp3x-i2s.c | 8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)

diff --git a/sound/soc/amd/raven/acp3x-i2s.c b/sound/soc/amd/raven/acp3x-i2s.c
index a532e01..c9c69eb 100644
--- a/sound/soc/amd/raven/acp3x-i2s.c
+++ b/sound/soc/amd/raven/acp3x-i2s.c
@@ -302,16 +302,14 @@ static int acp3x_dai_probe(struct platform_device *pdev)
 	struct i2s_dev_data *adata;
 	int ret;
 
-	adata = devm_kzalloc(&pdev->dev, sizeof(struct i2s_dev_data),
-			GFP_KERNEL);
-	if (!adata)
-		return -ENOMEM;
-
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	if (!res) {
 		dev_err(&pdev->dev, "IORESOURCE_MEM FAILED\n");
 		return -ENOMEM;
 	}
+	adata = devm_kzalloc(&pdev->dev, sizeof(struct i2s_dev_data), GFP_KERNEL);
+	if (!adata)
+		return -ENOMEM;
 	adata->acp3x_base = devm_ioremap(&pdev->dev, res->start,
 						resource_size(res));
 	if (!adata->acp3x_base)
-- 
1.9.1