linux-kernel - Re: [PATCH] media: venus: fix duplicated code for different branches

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Date:   Fri, 18 Aug 2017 10:55:43 -0500
From:   "Gustavo A. R. Silva" <gustavo@...eddedor.com>
To:     Stanimir Varbanov <stanimir.varbanov@...aro.org>,
        Mauro Carvalho Chehab <mchehab@...nel.org>
Cc:     linux-media@...r.kernel.org, linux-arm-msm@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] media: venus: fix duplicated code for different branches

Hi Stanimir,

On 08/18/2017 02:52 AM, Stanimir Varbanov wrote:
> Hi Gustavo,
>
> On 08/18/2017 02:12 AM, Gustavo A. R. Silva wrote:
>> Refactor code in order to avoid identical code for different branches.
>>
>> This issue was detected with the help of Coccinelle.
>>
>> Addresses-Coverity-ID: 1415317
>> Signed-off-by: Gustavo A. R. Silva <gustavo@...eddedor.com>
>> ---
>> This code was reported by Coverity and it was tested by compilation only.
>> Please, verify if this is an actual bug.
>
> Yes looks like copy/paste error, and yes it is a bug.
>

Thank you for reviewing it.

>>
>>  drivers/media/platform/qcom/venus/helpers.c | 6 +-----
>>  1 file changed, 1 insertion(+), 5 deletions(-)
>>
>> diff --git a/drivers/media/platform/qcom/venus/helpers.c b/drivers/media/platform/qcom/venus/helpers.c
>> index 5f4434c..8a5c467 100644
>> --- a/drivers/media/platform/qcom/venus/helpers.c
>> +++ b/drivers/media/platform/qcom/venus/helpers.c
>> @@ -240,11 +240,7 @@ static void return_buf_error(struct venus_inst *inst,
>>  {
>>  	struct v4l2_m2m_ctx *m2m_ctx = inst->m2m_ctx;
>>
>> -	if (vbuf->vb2_buf.type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)
>> -		v4l2_m2m_src_buf_remove_by_buf(m2m_ctx, vbuf);
>> -	else
>> -		v4l2_m2m_src_buf_remove_by_buf(m2m_ctx, vbuf);
>
> the correct fix must replace the second v4l2_m2m_src_* with v4l2_m2m_dst_*.
>

I'll send a patch to fix this bug shortly

>> -
>> +	v4l2_m2m_src_buf_remove_by_buf(m2m_ctx, vbuf);
>>  	v4l2_m2m_buf_done(vbuf, VB2_BUF_STATE_ERROR);
>>  }
>>
>>
>

Thanks!
-- 
Gustavo A. R. Silva