linux-kernel - Re: [PATCH 06/15] mailbox: mediatek: Add cmdq_mbox

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Message-ID: <95f61cb0-f0a9-111c-1541-88d51c3e5748@linaro.org>
Date:   Sat, 23 Sep 2023 20:02:47 +0200
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     "Jason-JH.Lin" <jason-jh.lin@...iatek.com>,
        Jassi Brar <jassisinghbrar@...il.com>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Chun-Kuang Hu <chunkuang.hu@...nel.org>,
        AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>
Cc:     Conor Dooley <conor+dt@...nel.org>,
        Jason-ch Chen <jason-ch.chen@...iatek.com>,
        Johnson Wang <johnson.wang@...iatek.com>,
        Elvis Wang <Elvis.Wang@...iatek.com>,
        Singo Chang <singo.chang@...iatek.com>,
        Nancy Lin <nancy.lin@...iatek.com>,
        Shawn Sung <shawn.sung@...iatek.com>,
        linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org,
        dri-devel@...ts.freedesktop.org,
        Project_Global_Chrome_Upstream_Group@...iatek.com
Subject: Re: [PATCH 06/15] mailbox: mediatek: Add cmdq_mbox_stop to disable
 GCE thread

On 18/09/2023 21:21, Jason-JH.Lin wrote:
> Add cmdq_mbox_stop to disable GCE thread.
> 
> To support the error handling or the stop flow of the GCE loopping
> thread, lopping thread user can call cmdq_mbox_stop to disable the
> GCE HW thread.
> 
> Signed-off-by: Jason-JH.Lin <jason-jh.lin@...iatek.com>
> ---
>  drivers/mailbox/mtk-cmdq-mailbox.c       | 6 ++++++
>  include/linux/mailbox/mtk-cmdq-mailbox.h | 1 +
>  2 files changed, 7 insertions(+)
> 
> diff --git a/drivers/mailbox/mtk-cmdq-mailbox.c b/drivers/mailbox/mtk-cmdq-mailbox.c
> index 4d62b07c1411..8bd39fecbf00 100644
> --- a/drivers/mailbox/mtk-cmdq-mailbox.c
> +++ b/drivers/mailbox/mtk-cmdq-mailbox.c
> @@ -469,6 +469,12 @@ static void cmdq_mbox_shutdown(struct mbox_chan *chan)
>  	spin_unlock_irqrestore(&thread->chan->lock, flags);
>  }
>  
> +void cmdq_mbox_stop(struct mbox_chan *chan)
> +{
> +	cmdq_mbox_shutdown(chan);
> +}
> +EXPORT_SYMBOL(cmdq_mbox_stop);

1. EXPORT_SYMBOL_GPL
2. Missing kernel doc (full doc)



Best regards,
Krzysztof