linux-kernel - Re: [PATCH v5 05/25] staging: media: tegra-vde: use pm_runtime_resume_and

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Date:   Fri, 7 May 2021 08:13:33 +0300
From:   Dan Carpenter <dan.carpenter@...cle.com>
To:     Mauro Carvalho Chehab <mchehab+huawei@...nel.org>
Cc:     linuxarm@...wei.com, mauro.chehab@...wei.com,
        Dmitry Osipenko <digetx@...il.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Jonathan Hunter <jonathanh@...dia.com>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Thierry Reding <thierry.reding@...il.com>,
        linux-kernel@...r.kernel.org, linux-media@...r.kernel.org,
        linux-staging@...ts.linux.dev, linux-tegra@...r.kernel.org
Subject: Re: [PATCH v5 05/25] staging: media: tegra-vde: use
 pm_runtime_resume_and_get()

On Thu, May 06, 2021 at 05:25:43PM +0200, Mauro Carvalho Chehab wrote:
> @@ -1069,11 +1071,19 @@ static int tegra_vde_probe(struct platform_device *pdev)
>  	 * power-cycle it in order to put hardware into a predictable lower
>  	 * power state.
>  	 */
> -	pm_runtime_get_sync(dev);
> +	if (pm_runtime_resume_and_get(dev) < 0)
> +		goto err_pm_runtime;

Needs an error code on this path.  These days the kbuild bot will send
a warning for this eventually.

> +
>  	pm_runtime_put(dev);
>  
>  	return 0;
>  
> +err_pm_runtime:
> +	misc_deregister(&vde->miscdev);
> +
> +	pm_runtime_dont_use_autosuspend(dev);
> +	pm_runtime_disable(dev);
> +
>  err_deinit_iommu:
>  	tegra_vde_iommu_deinit(vde);
>  

regards,
dan carpenter