linux-kernel - Re: [PATCH 2/2] firmware: arm_scmi: Add qcom hvc/shmem transport

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Message-ID: <6faf3d1d-f05f-4d28-82d9-32c8e22fd29b@linaro.org>
Date:   Wed, 19 Jul 2023 08:15:00 +0200
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Nikunj Kela <quic_nkela@...cinc.com>, sudeep.holla@....com
Cc:     cristian.marussi@....com, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org, conor+dt@...nel.org,
        agross@...nel.org, andersson@...nel.org, konrad.dybcio@...aro.org,
        linux-arm-kernel@...ts.infradead.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-arm-msm@...r.kernel.org
Subject: Re: [PATCH 2/2] firmware: arm_scmi: Add qcom hvc/shmem transport

On 18/07/2023 23:16, Nikunj Kela wrote:
> 
> On 7/18/2023 11:42 AM, Krzysztof Kozlowski wrote:
>> On 18/07/2023 20:25, Nikunj Kela wrote:
>>>>> +
>>>>> +	scmi_info = devm_kzalloc(dev, sizeof(*scmi_info), GFP_KERNEL);
>>>>> +	if (!scmi_info)
>>>>> +		return -ENOMEM;
>>>>> +
>>>>> +	np = of_parse_phandle(cdev->of_node, "shmem", 0);
>>>>> +	if (!of_device_is_compatible(np, "arm,scmi-shmem"))
>>>> You leak here reference.
>>> Wouldn't the devm_* API take care of that implicitly? It is same in
>>> smc.c as well.
>> Thanks for bringing my attention to this. I sent a fix for smc.c. Fix
>> your patch as well, please.
> Thanks, I thought you were referring to kzalloc cleanup. Will include 
> this fix. BTW, you may need to fix mailbox.c as well.

Indeed, thanks.

Best regards,
Krzysztof