linux-kernel - Re: [PATCH v4 15/17] media: qcom: camss: Move vfe_disable into a common routine where applicable

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Message-ID: <c9570c8e-c9a5-43f5-8b69-d5c38d214061@linaro.org>
Date:   Fri, 8 Sep 2023 11:21:43 +0100
From:   Bryan O'Donoghue <bryan.odonoghue@...aro.org>
To:     Konrad Dybcio <konrad.dybcio@...aro.org>, rfoss@...nel.org,
        todor.too@...il.com, agross@...nel.org, andersson@...nel.org,
        mchehab@...nel.org, hverkuil-cisco@...all.nl,
        laurent.pinchart@...asonboard.com, sakari.ailus@...ux.intel.com,
        andrey.konovalov@...aro.org
Cc:     linux-media@...r.kernel.org, linux-arm-msm@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v4 15/17] media: qcom: camss: Move vfe_disable into a
 common routine where applicable

On 08/09/2023 11:04, Konrad Dybcio wrote:
> On 8.09.2023 12:02, Konrad Dybcio wrote:
>> On 7.09.2023 18:44, Bryan O'Donoghue wrote:
>>> We can move vfe_disable() into a common routine in the core VFE file
>>> provided we make wm_stop() a VFE specific callback.
>>>
>>> The callback is required to capture the case where VFE 17x currently isn't
>>> VC enabled where as VFE 480 is.
>>>
>>> Suggested-by: Laurent Pinchart <laurent.pinchart@...asonboard.com>
>>> Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@...aro.org>
>>> ---
>> Acked-by: Konrad Dybcio <konrad.dybcio@...aro.org>
>>
>> Konrad
> Actually there's
> 
> ret = vfe_reset(vfe);
> 
> return ret;
> 
> 
> which could just be
> 
> return vfe_reset(vfe);
> 
> 
> Konrad

On purpose.

I prefer the ret = ; return ret; pattern since it makes it easier / less 
work to

ret = fn();
if (ret)
     goto error;

error:
     return ret;

---
bod