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Subject: Re: [PATCH v5 09/16] drm/mediatek: Use pm_runtime_resume_and_get for
 PM get_sync
To:     Yong Wu <yong.wu@mediatek.com>, Joerg Roedel <joro@8bytes.org>,
        Rob Herring <robh+dt@kernel.org>,
        Krzysztof Kozlowski <krzk@kernel.org>
Cc:     Evan Green <evgreen@chromium.org>,
        Robin Murphy <robin.murphy@arm.com>,
        Tomasz Figa <tfiga@chromium.org>,
        Will Deacon <will.deacon@arm.com>,
        linux-mediatek@lists.infradead.org, srv_heupstream@mediatek.com,
        devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
        linux-arm-kernel@lists.infradead.org,
        iommu@lists.linux-foundation.org, youlin.pei@mediatek.com,
        Nicolas Boichat <drinkcat@chromium.org>,
        Matthias Kaehlcke <mka@chromium.org>, anan.sun@mediatek.com,
        chao.hao@mediatek.com, ming-fan.chen@mediatek.com,
        yi.kuo@mediatek.com, eizan@chromium.org, acourbot@chromium.org
References: <20210410091128.31823-1-yong.wu@mediatek.com>
 <20210410091128.31823-10-yong.wu@mediatek.com>
From:   Matthias Brugger <matthias.bgg@gmail.com>
Message-ID: <299857fd-533d-5e6e-0744-92ee56078638@gmail.com>
Date:   Wed, 9 Jun 2021 15:52:57 +0200
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On 10/04/2021 11:11, Yong Wu wrote:
> pm_runtime_get_sync will increment pm usage counter even it failed.
> This patch use pm_runtime_resume_and_get instead of pm_runtime_get
> to keep usage counter balanced.
> 
> Signed-off-by: Yong Wu <yong.wu@mediatek.com>

Reviewed-by: Matthias Brugger <matthias.bgg@gmail.com>

> ---
>  drivers/gpu/drm/mediatek/mtk_drm_crtc.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
> index 8b0de90156c6..69d23ce56d2c 100644
> --- a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
> +++ b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
> @@ -259,7 +259,7 @@ static int mtk_crtc_ddp_hw_init(struct mtk_drm_crtc *mtk_crtc)
>  		drm_connector_list_iter_end(&conn_iter);
>  	}
>  
> -	ret = pm_runtime_get_sync(crtc->dev->dev);
> +	ret = pm_runtime_resume_and_get(crtc->dev->dev);
>  	if (ret < 0) {
>  		DRM_ERROR("Failed to enable power domain: %d\n", ret);
>  		return ret;
>