linux-kernel - Re: [Patch v3 ] drm/msm/dpu: Correct dpu destroy and disable order

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Message-ID: <2b15d68ebafebe0c7f40bcb09b3d1ba6@codeaurora.org>
Date:   Sat, 01 Dec 2018 18:24:41 -0800
From:   Jeykumar Sankaran <jsanka@...eaurora.org>
To:     Jayant Shekhar <jshekhar@...eaurora.org>
Cc:     dri-devel@...ts.freedesktop.org, linux-arm-msm@...r.kernel.org,
        freedreno@...ts.freedesktop.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, robdclark@...il.com,
        seanpaul@...omium.org, hoegsberg@...omium.org,
        abhinavk@...eaurora.org, chandanu@...eaurora.org,
        nganji@...eaurora.org
Subject: Re: [Patch v3 ] drm/msm/dpu: Correct dpu destroy and disable order

On 2018-11-18 22:25, Jayant Shekhar wrote:
> In case of msm drm bind failure, pm runtime put sync
> is called from dsi driver which issues an asynchronous
> put on mdss device. Subsequently when dpu_mdss_destroy
> is triggered the change will make sure to put the mdss
> device in suspend and clearing pending work if not
> scheduled.
> 
> Changes in v2:
>    - Removed double spacings [Jeykumar]
> 
> Changes in v3:
>    - Fix clock on issue during bootup [Rajendra]
> 
> Signed-off-by: Jayant Shekhar <jshekhar@...eaurora.org>
> ---

Acked-by: Jeykumar Sankaran <jsanka@...eaurora.org>

>  drivers/gpu/drm/msm/disp/dpu1/dpu_mdss.c | 6 ++----
>  1 file changed, 2 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_mdss.c
> b/drivers/gpu/drm/msm/disp/dpu1/dpu_mdss.c
> index fd9c893..df8127b 100644
> --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_mdss.c
> +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_mdss.c
> @@ -156,18 +156,16 @@ static void dpu_mdss_destroy(struct drm_device 
> *dev)
>  	struct dpu_mdss *dpu_mdss = to_dpu_mdss(priv->mdss);
>  	struct dss_module_power *mp = &dpu_mdss->mp;
> 
> +	pm_runtime_suspend(dev->dev);
> +	pm_runtime_disable(dev->dev);
>  	_dpu_mdss_irq_domain_fini(dpu_mdss);
> -
>  	free_irq(platform_get_irq(pdev, 0), dpu_mdss);
> -
>  	msm_dss_put_clk(mp->clk_config, mp->num_clk);
>  	devm_kfree(&pdev->dev, mp->clk_config);
> 
>  	if (dpu_mdss->mmio)
>  		devm_iounmap(&pdev->dev, dpu_mdss->mmio);
>  	dpu_mdss->mmio = NULL;
> -
> -	pm_runtime_disable(dev->dev);
>  	priv->mdss = NULL;
>  }

-- 
Jeykumar S