linux-kernel - Re: [PATCH] soc: mediatek: knows_txdone needs to be set in Mediatek CMDQ helper

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Message-ID: <03c07fab-3768-7bf2-f955-92b1e626709c@gmail.com>
Date:   Fri, 14 Feb 2020 11:15:47 +0100
From:   Matthias Brugger <matthias.bgg@...il.com>
To:     Bibby Hsieh <bibby.hsieh@...iatek.com>,
        Jassi Brar <jassisinghbrar@...il.com>,
        Rob Herring <robh+dt@...nel.org>, CK HU <ck.hu@...iatek.com>
Cc:     devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org, srv_heupstream@...iatek.com,
        Nicolas Boichat <drinkcat@...omium.org>,
        Dennis-YC Hsieh <dennis-yc.hsieh@...iatek.com>,
        Houlong Wei <houlong.wei@...iatek.com>
Subject: Re: [PATCH] soc: mediatek: knows_txdone needs to be set in Mediatek
 CMDQ helper



On 14/02/2020 05:35, Bibby Hsieh wrote:
> Mediatek CMDQ driver have a mechanism to do TXDONE_BY_ACK,
> so we should set knows_txdone.
> 
> Fixes:576f1b4bc802 ("soc: mediatek: Add Mediatek CMDQ helper")
> 
> Signed-off-by: Bibby Hsieh <bibby.hsieh@...iatek.com>
> ---

I added a tag:
Cc: stable@...r.kernel.org # v5.0+

and applied it to v5.6-next/soc

Thanks

>  drivers/soc/mediatek/mtk-cmdq-helper.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/soc/mediatek/mtk-cmdq-helper.c b/drivers/soc/mediatek/mtk-cmdq-helper.c
> index 9add0fd5fa6c..2ca1a759a347 100644
> --- a/drivers/soc/mediatek/mtk-cmdq-helper.c
> +++ b/drivers/soc/mediatek/mtk-cmdq-helper.c
> @@ -80,6 +80,7 @@ struct cmdq_client *cmdq_mbox_create(struct device *dev, int index, u32 timeout)
>  	client->pkt_cnt = 0;
>  	client->client.dev = dev;
>  	client->client.tx_block = false;
> +	client->client.knows_txdone = true;
>  	client->chan = mbox_request_channel(&client->client, index);
>  
>  	if (IS_ERR(client->chan)) {
>