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

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Date: Mon, 8 Jan 2024 12:19:15 +0530
From: Dikshita Agarwal <quic_dikshita@...cinc.com>
To: 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>
CC: Bryan O'Donoghue <bryan.odonoghue@...aro.org>,
        <linux-media@...r.kernel.org>, <linux-arm-msm@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] media: venus: flush all buffers in output streamoff

Hello All,

Please ignore this duplicate email and review the other patch [1].
Sorry for the spam.

[1]
https://patchwork.linuxtv.org/project/linux-media/patch/1704695615-1036-1-git-send-email-quic_dikshita@quicinc.com/

Thanks,
Dikshita

On 1/8/2024 12:03 PM, Dikshita Agarwal wrote:
> For scenarios, when source change is followed by VIDIOC_STREAMOFF
> on output, driver should discards any remaining queued OUTPUT
> buffers which are not decoded or dequeued.
> Flush with HFI_FLUSH_INPUT doesn't have any actual implact. So,
> fix it by invoking HFI_FLUSH_ALL which will flush all queued buffers.
> 
> Signed-off-by: Dikshita Agarwal <quic_dikshita@...cinc.com>
> ---
>  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;