linux-kernel - Re: [PATCH] dmaengine: tegra210-adma: fix pm runtime unbalance

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Message-ID: <fe921832-79f9-7e6a-e1c5-a94b5d617435@nvidia.com>
Date:   Thu, 21 Oct 2021 07:57:51 +0100
From:   Jon Hunter <jonathanh@...dia.com>
To:     Dongliang Mu <mudongliangabcd@...il.com>,
        Laxman Dewangan <ldewangan@...dia.com>,
        Vinod Koul <vkoul@...nel.org>,
        Thierry Reding <thierry.reding@...il.com>,
        Zhang Qilong <zhangqilong3@...wei.com>
CC:     <dmaengine@...r.kernel.org>, <linux-tegra@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] dmaengine: tegra210-adma: fix pm runtime unbalance


On 21/10/2021 04:05, Dongliang Mu wrote:
> The previous commit 059e969c2a7d ("dmaengine: tegra210-adma: Using
> pm_runtime_resume_and_get to replace open coding") forgets to replace
> the pm_runtime_get_sync in the tegra_adma_probe, but removes the
> pm_runtime_put_noidle.
> 
> Fix this by continuing to replace pm_runtime_get_sync with
> pm_runtime_resume_and_get in tegra_adma_probe.
> 
> Fixes: 059e969c2a7d ("dmaengine: tegra210-adma: Using pm_runtime_resume_and_get to replace open coding")
> Signed-off-by: Dongliang Mu <mudongliangabcd@...il.com>
> ---
>   drivers/dma/tegra210-adma.c | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/dma/tegra210-adma.c b/drivers/dma/tegra210-adma.c
> index b1115a6d1935..d1dff3a29db5 100644
> --- a/drivers/dma/tegra210-adma.c
> +++ b/drivers/dma/tegra210-adma.c
> @@ -867,7 +867,7 @@ static int tegra_adma_probe(struct platform_device *pdev)
>   
>   	pm_runtime_enable(&pdev->dev);
>   
> -	ret = pm_runtime_get_sync(&pdev->dev);
> +	ret = pm_runtime_resume_and_get(&pdev->dev);
>   	if (ret < 0)
>   		goto rpm_disable;
>   
> 

Thanks!

Reviewed-by: Jon Hunter <jonathanh@...dia.com>

Jon

-- 
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