linux-kernel - Re: [PATCH] mailbox: mtk-cmdq: Add unregister mailbox controller in cmdq

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Message-ID: <8ef254cb-ac65-405d-bcee-d0990536fb32@collabora.com>
Date: Thu, 13 Jun 2024 17:10:46 +0200
From: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
To: "Jason-JH.Lin" <jason-jh.lin@...iatek.com>,
 Jassi Brar <jassisinghbrar@...il.com>,
 Chun-Kuang Hu <chunkuang.hu@...nel.org>
Cc: Matthias Brugger <matthias.bgg@...il.com>,
 Singo Chang <singo.chang@...iatek.com>, Nancy Lin <nancy.lin@...iatek.com>,
 linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
 linux-mediatek@...ts.infradead.org,
 Project_Global_Chrome_Upstream_Group@...iatek.com
Subject: Re: [PATCH] mailbox: mtk-cmdq: Add unregister mailbox controller in
 cmdq_remove()

Il 13/06/24 17:06, Jason-JH.Lin ha scritto:
> Add unregister mailbox controller in cmdq_remove to fix cmdq unbind
> WARN_ON message from pm_runtime_get_sync() in cmdq_mbox_shutdown().
> 
> Fixes: 623a6143a845 ("mailbox: mediatek: Add Mediatek CMDQ driver")
> Signed-off-by: Jason-JH.Lin <jason-jh.lin@...iatek.com>

Hello,

I think you forgot about...

https://lore.kernel.org/all/6fcd48b14e865c25e6db7559fe6b946537bfa0ce.camel@mediatek.com/

...as that would also resolve this one without any hacks.

Cheers,
Angelo

> ---
>   drivers/mailbox/mtk-cmdq-mailbox.c | 2 ++
>   1 file changed, 2 insertions(+)
> 
> diff --git a/drivers/mailbox/mtk-cmdq-mailbox.c b/drivers/mailbox/mtk-cmdq-mailbox.c
> index 4aa394e91109..1399e18a39a4 100644
> --- a/drivers/mailbox/mtk-cmdq-mailbox.c
> +++ b/drivers/mailbox/mtk-cmdq-mailbox.c
> @@ -371,6 +371,8 @@ static void cmdq_remove(struct platform_device *pdev)
>   {
>   	struct cmdq *cmdq = platform_get_drvdata(pdev);
>   
> +	devm_mbox_controller_unregister(&pdev->dev, &cmdq->mbox);
> +
>   	if (cmdq->pdata->sw_ddr_en)
>   		cmdq_sw_ddr_enable(cmdq, false);
>