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[PATCH] ASoC: Intel: Skylake: use dev in dev_err rather than skl pointer

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  [PATCH] ASoC: Intel: Skylake: use dev in dev_err rather than skl pointer Colin King <colin.king@canonical.com> - 2017-04-27 17:20 +0200
    Re: [PATCH] ASoC: Intel: Skylake: use dev in dev_err rather than skl  pointer Takashi Sakamoto <o-takashi@sakamocchi.jp> - 2017-04-28 00:40 +0200

#1632164 — [PATCH] ASoC: Intel: Skylake: use dev in dev_err rather than skl pointer

From: Colin Ian King <colin.king@canonical.com>

The dev_err message is dereferencing an uininitialized skl pointer
which should be avoided. Don't use skl, use dev instead.

Detected by CoverityScan, CID#1432042 ("Uninitialized pointer read")

Fixes: 9fe9c71192832 ("ASoC: Intel: Skylake: Move sst common initialization to a helper function")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
---
 sound/soc/intel/skylake/bxt-sst.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sound/soc/intel/skylake/bxt-sst.c b/sound/soc/intel/skylake/bxt-sst.c
index fde4bc0f35b0..f5e7dbb1ba39 100644
--- a/sound/soc/intel/skylake/bxt-sst.c
+++ b/sound/soc/intel/skylake/bxt-sst.c
@@ -564,7 +564,7 @@ int bxt_sst_dsp_init(struct device *dev, void __iomem *mmio_base, int irq,
 
 	ret = skl_sst_ctx_init(dev, irq, fw_name, dsp_ops, dsp, &skl_dev);
 	if (ret < 0) {
-		dev_err(skl->dev, "%s: no device\n", __func__);
+		dev_err(dev, "%s: no device\n", __func__);
 		return ret;
 	}
 
-- 
2.11.0

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#1632422 — Re: [PATCH] ASoC: Intel: Skylake: use dev in dev_err rather than skl pointer

Hi,

On Apr 28 2017 00:13, Colin King wrote:
> From: Colin Ian King <colin.king@canonical.com>
> 
> The dev_err message is dereferencing an uininitialized skl pointer
> which should be avoided. Don't use skl, use dev instead.
> 
> Detected by CoverityScan, CID#1432042 ("Uninitialized pointer read")
> 
> Fixes: 9fe9c71192832 ("ASoC: Intel: Skylake: Move sst common initialization to a helper function")
> Signed-off-by: Colin Ian King <colin.king@canonical.com>
> ---
>  sound/soc/intel/skylake/bxt-sst.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/sound/soc/intel/skylake/bxt-sst.c b/sound/soc/intel/skylake/bxt-sst.c
> index fde4bc0f35b0..f5e7dbb1ba39 100644
> --- a/sound/soc/intel/skylake/bxt-sst.c
> +++ b/sound/soc/intel/skylake/bxt-sst.c
> @@ -564,7 +564,7 @@ int bxt_sst_dsp_init(struct device *dev, void __iomem *mmio_base, int irq,
>  
>  	ret = skl_sst_ctx_init(dev, irq, fw_name, dsp_ops, dsp, &skl_dev);
>  	if (ret < 0) {
> -		dev_err(skl->dev, "%s: no device\n", __func__);
> +		dev_err(dev, "%s: no device\n", __func__);
>  		return ret;
>  	}

Thanks for posting this patch, however Vinod already posted the same
fix. Please wait for merging it and verify again:

[alsa-devel] [PATCH 1/3] ASoC: Intel: Skylake: Fix uninitialized pointer
usage
http://mailman.alsa-project.org/pipermail/alsa-devel/2017-April/120214.html


Regards

Takashi Sakamoto

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