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SubjectApplied "ASoC: amd: Add error checking to probe function" to the asoc tree
The patch

ASoC: amd: Add error checking to probe function

has been applied to the asoc tree at

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From fdaa451107ce543d345a339b4d5e20e8e4bac396 Mon Sep 17 00:00:00 2001
From: Guenter Roeck <>
Date: Mon, 20 Nov 2017 20:27:56 -0800
Subject: [PATCH] ASoC: amd: Add error checking to probe function

The acp_audio_dma does not perform sufficient error checking in its probe
function. This can result in crashes if a critical error path is

Fixes: 7c31335a03b6a ("ASoC: AMD: add AMD ASoC ACP 2.x DMA driver")
Cc: Alex Deucher <>
Cc: Dominik Behr <>
Cc: Daniel Kurtz <>
Signed-off-by: Guenter Roeck <>
Reviewed-by: Alex Deucher <>
Signed-off-by: Mark Brown <>
sound/soc/amd/acp-pcm-dma.c | 7 +++++++
1 file changed, 7 insertions(+)

diff --git a/sound/soc/amd/acp-pcm-dma.c b/sound/soc/amd/acp-pcm-dma.c
index 9f521a55d610..b5e41df6bb3a 100644
--- a/sound/soc/amd/acp-pcm-dma.c
+++ b/sound/soc/amd/acp-pcm-dma.c
@@ -1051,6 +1051,11 @@ static int acp_audio_probe(struct platform_device *pdev)
struct resource *res;
const u32 *pdata = pdev->dev.platform_data;

+ if (!pdata) {
+ dev_err(&pdev->dev, "Missing platform data\n");
+ return -ENODEV;
+ }
audio_drv_data = devm_kzalloc(&pdev->dev, sizeof(struct audio_drv_data),
if (audio_drv_data == NULL)
@@ -1058,6 +1063,8 @@ static int acp_audio_probe(struct platform_device *pdev)

res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
audio_drv_data->acp_mmio = devm_ioremap_resource(&pdev->dev, res);
+ if (IS_ERR(audio_drv_data->acp_mmio))
+ return PTR_ERR(audio_drv_data->acp_mmio);

/* The following members gets populated in device 'open'
* function. Till then interrupts are disabled in 'acp_init'
 \ /
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