linux-kernel - Re: [PATCH v2] i3c: master: svc: Fix pm_runtime_set

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Message-ID: <a192a264-e7d8-3a3b-7bcc-60975102fcc6@huawei.com>
Date: Tue, 8 Oct 2024 10:32:59 +0800
From: Jinjie Ruan <ruanjinjie@...wei.com>
To: <miquel.raynal@...tlin.com>, <conor.culhane@...vaco.com>,
	<alexandre.belloni@...tlin.com>, <xiaoning.wang@....com>, <jun.li@....com>,
	<linux-i3c@...ts.infradead.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2] i3c: master: svc: Fix pm_runtime_set_suspended() with
 runtime pm enabled

Ping.

On 2024/9/30 17:19, Jinjie Ruan wrote:
> It is not valid to call pm_runtime_set_suspended() for devices
> with runtime PM enabled because it returns -EAGAIN if it is enabled
> already and working. So, call pm_runtime_disable() before to fix it.
> 
> Cc: stable@...r.kernel.org # v5.17
> Fixes: 05be23ef78f7 ("i3c: master: svc: add runtime pm support")
> Reviewed-by: Frank Li <Frank.Li@....com>
> Reviewed-by: Miquel Raynal <miquel.raynal@...tlin.com>
> Signed-off-by: Jinjie Ruan <ruanjinjie@...wei.com>
> ---
> v2:
> - Add Reviewed-by.
> - Add stable tag as Miquel suggested.
> ---
>  drivers/i3c/master/svc-i3c-master.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/i3c/master/svc-i3c-master.c b/drivers/i3c/master/svc-i3c-master.c
> index a7bfc678153e..130cec4ee307 100644
> --- a/drivers/i3c/master/svc-i3c-master.c
> +++ b/drivers/i3c/master/svc-i3c-master.c
> @@ -1827,8 +1827,8 @@ static int svc_i3c_master_probe(struct platform_device *pdev)
>  rpm_disable:
>  	pm_runtime_dont_use_autosuspend(&pdev->dev);
>  	pm_runtime_put_noidle(&pdev->dev);
> -	pm_runtime_set_suspended(&pdev->dev);
>  	pm_runtime_disable(&pdev->dev);
> +	pm_runtime_set_suspended(&pdev->dev);
>  
>  err_disable_clks:
>  	svc_i3c_master_unprepare_clks(master);