linux-kernel - Re: [PATCH v4 2/5] media: venus: core: Fix error handling in probe

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Message-ID: <08c2fec5-47a7-9a31-12a6-bae56d18b37c@linaro.org>
Date:   Fri, 24 Jul 2020 17:55:55 +0300
From:   Stanimir Varbanov <stanimir.varbanov@...aro.org>
To:     Rajendra Nayak <rnayak@...eaurora.org>, robh+dt@...nel.org,
        agross@...nel.org, bjorn.andersson@...aro.org
Cc:     linux-arm-msm@...r.kernel.org, linux-media@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        mka@...omium.org
Subject: Re: [PATCH v4 2/5] media: venus: core: Fix error handling in probe



On 7/23/20 2:26 PM, Rajendra Nayak wrote:
> Post a successful pm_ops->core_get, an error in probe
> should exit by doing a pm_ops->core_put which seems
> to be missing. So fix it.
> 
> Signed-off-by: Rajendra Nayak <rnayak@...eaurora.org>
> ---
>  drivers/media/platform/qcom/venus/core.c | 15 ++++++++++-----
>  1 file changed, 10 insertions(+), 5 deletions(-)

Acked-by: Stanimir Varbanov <stanimir.varbanov@...aro.org>

> 
> diff --git a/drivers/media/platform/qcom/venus/core.c b/drivers/media/platform/qcom/venus/core.c
> index 203c653..bfcaba3 100644
> --- a/drivers/media/platform/qcom/venus/core.c
> +++ b/drivers/media/platform/qcom/venus/core.c
> @@ -224,13 +224,15 @@ static int venus_probe(struct platform_device *pdev)
>  
>  	ret = dma_set_mask_and_coherent(dev, core->res->dma_mask);
>  	if (ret)
> -		return ret;
> +		goto err_core_put;
>  
>  	if (!dev->dma_parms) {
>  		dev->dma_parms = devm_kzalloc(dev, sizeof(*dev->dma_parms),
>  					      GFP_KERNEL);
> -		if (!dev->dma_parms)
> -			return -ENOMEM;
> +		if (!dev->dma_parms) {
> +			ret = -ENOMEM;
> +			goto err_core_put;
> +		}
>  	}
>  	dma_set_max_seg_size(dev, DMA_BIT_MASK(32));
>  
> @@ -242,11 +244,11 @@ static int venus_probe(struct platform_device *pdev)
>  					IRQF_TRIGGER_HIGH | IRQF_ONESHOT,
>  					"venus", core);
>  	if (ret)
> -		return ret;
> +		goto err_core_put;
>  
>  	ret = hfi_create(core, &venus_core_ops);
>  	if (ret)
> -		return ret;
> +		goto err_core_put;
>  
>  	pm_runtime_enable(dev);
>  
> @@ -302,6 +304,9 @@ static int venus_probe(struct platform_device *pdev)
>  	pm_runtime_set_suspended(dev);
>  	pm_runtime_disable(dev);
>  	hfi_destroy(core);
> +err_core_put:
> +	if (core->pm_ops->core_put)
> +		core->pm_ops->core_put(dev);
>  	return ret;
>  }
>  
> 

-- 
regards,
Stan