linux-kernel - Re: [PATCH] [v2] media: staging: tegra-vde: fix runtime pm imbalance on error

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Message-ID: <20200521112131.GG30374@kadam>
Date:   Thu, 21 May 2020 14:21:31 +0300
From:   Dan Carpenter <dan.carpenter@...cle.com>
To:     Dinghao Liu <dinghao.liu@....edu.cn>
Cc:     kjlu@....edu, devel@...verdev.osuosl.org,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-kernel@...r.kernel.org,
        Jonathan Hunter <jonathanh@...dia.com>,
        Thierry Reding <thierry.reding@...il.com>,
        linux-tegra@...r.kernel.org, Dmitry Osipenko <digetx@...il.com>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        linux-media@...r.kernel.org
Subject: Re: [PATCH] [v2] media: staging: tegra-vde: fix runtime pm imbalance
 on error

On Thu, May 21, 2020 at 02:27:45PM +0800, Dinghao Liu wrote:
> pm_runtime_get_sync() increments the runtime PM usage counter even
> the call returns an error code. Thus a pairing decrement is needed
> on the error handling path to keep the counter balanced.
> 
> Signed-off-by: Dinghao Liu <dinghao.liu@....edu.cn>

Let's stop working around the bug in pm_runtime_get_sync() and write
a replacement for it instead.

regards,
dan carpenter