linux-kernel - Re: [PATCH v2] media: venus: flush all buffers in output plane streamoff

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Message-ID: <f0d33617-3edf-6fa7-5e4b-9dbddcd6e697@quicinc.com>
Date: Fri, 12 Jan 2024 12:20:56 +0530
From: Dikshita Agarwal <quic_dikshita@...cinc.com>
To: Bryan O'Donoghue <bryan.odonoghue@...aro.org>
CC: Bryan O'Donoghue <bryan.odonoghue@...aro.org>,
        Mauro Carvalho Chehab
	<mchehab+huawei@...nel.org>,
        Stanimir Varbanov
	<stanimir.varbanov@...aro.org>,
        <linux-media@...r.kernel.org>, <linux-arm-msm@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>,
        "Stanimir
 Varbanov" <stanimir.k.varbanov@...il.com>,
        Vikash Garodia
	<quic_vgarodia@...cinc.com>,
        Andy Gross <agross@...nel.org>,
        Bjorn Andersson
	<andersson@...nel.org>,
        Konrad Dybcio <konrad.dybcio@...aro.org>,
        "Mauro
 Carvalho Chehab" <mchehab@...nel.org>
Subject: Re: [PATCH v2] media: venus: flush all buffers in output plane
 streamoff

Hi Bryan,

I realized later that I missed to add your reviewed-by tag to this v2
patch, Sorry for this silly mistake, will be more careful in future.

On 1/10/2024 11:42 AM, Dikshita Agarwal wrote:
> For scenarios, when source change is followed by VIDIOC_STREAMOFF
> on output plane, driver should discard any queued OUTPUT
> buffers, which are not decoded or dequeued.
> Flush with HFI_FLUSH_INPUT does not have any actual impact.
> So, fix it, by invoking HFI_FLUSH_ALL, which will flush all
> queued buffers.
> 
> Fixes: 85872f861d4c ("media: venus: Mark last capture buffer")
> Signed-off-by: Dikshita Agarwal <quic_dikshita@...cinc.com>
Reviewed-by: Bryan O'Donoghue <bryan.odonoghue@...aro.org>
> ---
> Changes since v1:
> - Added fixes tag (Bryan)
> 
>  drivers/media/platform/qcom/venus/vdec.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/media/platform/qcom/venus/vdec.c b/drivers/media/platform/qcom/venus/vdec.c
> index 29130a9..0d2ab95 100644
> --- a/drivers/media/platform/qcom/venus/vdec.c
> +++ b/drivers/media/platform/qcom/venus/vdec.c
> @@ -1255,7 +1255,7 @@ static int vdec_stop_output(struct venus_inst *inst)
>  		break;
>  	case VENUS_DEC_STATE_INIT:
>  	case VENUS_DEC_STATE_CAPTURE_SETUP:
> -		ret = hfi_session_flush(inst, HFI_FLUSH_INPUT, true);
> +		ret = hfi_session_flush(inst, HFI_FLUSH_ALL, true);
>  		break;
>  	default:
>  		break;